./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL --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 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:21:59,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:21:59,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:21:59,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:21:59,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:21:59,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:21:59,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:21:59,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:21:59,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:21:59,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:21:59,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:21:59,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:21:59,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:21:59,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:21:59,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:21:59,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:21:59,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:21:59,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:21:59,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:21:59,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:21:59,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:21:59,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:21:59,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:21:59,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:21:59,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:21:59,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:21:59,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:21:59,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:21:59,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:21:59,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:21:59,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:21:59,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:21:59,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:21:59,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:21:59,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:21:59,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:21:59,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:21:59,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:21:59,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:21:59,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:21:59,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:21:59,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:21:59,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:21:59,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:21:59,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:21:59,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:21:59,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:21:59,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:21:59,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:21:59,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:21:59,909 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:21:59,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:21:59,910 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:21:59,910 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:21:59,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:21:59,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:21:59,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:21:59,911 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:21:59,912 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:21:59,912 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:21:59,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:21:59,912 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:21:59,913 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:21:59,913 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:21:59,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:21:59,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:21:59,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:21:59,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:21:59,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:21:59,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:21:59,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:21:59,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:21:59,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:21:59,915 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_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c [2021-11-19 04:22:00,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:22:00,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:22:00,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:22:00,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:22:00,220 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:22:00,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2021-11-19 04:22:00,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/b058f3b14/769f166768f941b186325015e3a62f0a/FLAGdc39b2052 [2021-11-19 04:22:00,972 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:22:00,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2021-11-19 04:22:01,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/b058f3b14/769f166768f941b186325015e3a62f0a/FLAGdc39b2052 [2021-11-19 04:22:01,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/b058f3b14/769f166768f941b186325015e3a62f0a [2021-11-19 04:22:01,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:22:01,230 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:22:01,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:01,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:22:01,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:22:01,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:01" (1/1) ... [2021-11-19 04:22:01,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212b6da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:01, skipping insertion in model container [2021-11-19 04:22:01,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:01" (1/1) ... [2021-11-19 04:22:01,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:22:01,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:01,841 WARN L230 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_c889eb68-fade-4476-a186-b267b32baf20/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2021-11-19 04:22:02,059 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:02,073 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 04:22:02,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fc29ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:02, skipping insertion in model container [2021-11-19 04:22:02,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:02,075 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 04:22:02,077 INFO L158 Benchmark]: Toolchain (without parser) took 845.69ms. Allocated memory is still 100.7MB. Free memory was 68.5MB in the beginning and 65.7MB in the end (delta: 2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:22:02,080 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 56.0MB in the beginning and 56.0MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:22:02,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 843.08ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 65.7MB in the end (delta: 2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:22:02,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 56.0MB in the beginning and 56.0MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 843.08ms. Allocated memory is still 100.7MB. Free memory was 68.2MB in the beginning and 65.7MB in the end (delta: 2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL --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 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:22:04,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:22:04,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:22:04,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:22:04,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:22:04,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:22:04,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:22:04,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:22:04,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:22:04,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:22:04,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:22:04,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:22:04,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:22:04,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:22:04,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:22:04,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:22:04,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:22:04,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:22:04,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:22:04,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:22:04,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:22:04,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:22:04,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:22:04,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:22:04,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:22:04,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:22:04,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:22:04,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:22:04,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:22:04,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:22:04,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:22:04,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:22:04,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:22:04,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:22:04,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:22:04,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:22:04,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:22:04,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:22:04,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:22:04,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:22:04,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:22:04,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 04:22:04,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:22:04,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:22:04,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:22:04,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:22:04,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:22:04,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:22:04,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:22:04,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:22:04,455 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:22:04,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:22:04,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:22:04,456 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:22:04,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:22:04,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:22:04,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:22:04,457 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:22:04,457 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:22:04,458 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:22:04,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:22:04,458 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:22:04,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:22:04,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:22:04,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:22:04,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:22:04,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:22:04,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:22:04,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:22:04,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:04,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:22:04,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:22:04,460 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:22:04,461 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:22:04,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:22:04,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:22:04,461 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_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d35be8b8e312d4eada0f7530ae9d43ecf1865be922a243e0781a735d175935c [2021-11-19 04:22:04,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:22:04,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:22:04,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:22:04,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:22:04,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:22:04,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2021-11-19 04:22:04,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/57987f6f1/c2c1c1ef889b41c5993fb37f9a104552/FLAG36bd67d04 [2021-11-19 04:22:05,656 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:22:05,657 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i [2021-11-19 04:22:05,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/57987f6f1/c2c1c1ef889b41c5993fb37f9a104552/FLAG36bd67d04 [2021-11-19 04:22:05,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/data/57987f6f1/c2c1c1ef889b41c5993fb37f9a104552 [2021-11-19 04:22:05,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:22:05,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:22:05,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:05,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:22:05,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:22:05,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:05" (1/1) ... [2021-11-19 04:22:05,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ef0ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:05, skipping insertion in model container [2021-11-19 04:22:05,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:05" (1/1) ... [2021-11-19 04:22:05,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:22:06,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:06,585 WARN L230 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_c889eb68-fade-4476-a186-b267b32baf20/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2021-11-19 04:22:06,730 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:06,742 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 04:22:06,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:06,774 WARN L230 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_c889eb68-fade-4476-a186-b267b32baf20/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2021-11-19 04:22:06,886 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:06,891 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:22:06,937 WARN L230 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_c889eb68-fade-4476-a186-b267b32baf20/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-2.i[33021,33034] [2021-11-19 04:22:07,079 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:07,147 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:22:07,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07 WrapperNode [2021-11-19 04:22:07,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:07,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:22:07,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:22:07,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:22:07,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:22:07,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:22:07,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:22:07,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:22:07,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (1/1) ... [2021-11-19 04:22:07,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:07,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:22:07,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:22:07,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:22:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:22:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:22:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:22:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 04:22:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 04:22:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 04:22:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 04:22:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 04:22:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:22:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:22:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 04:22:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:22:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:22:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 04:22:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 04:22:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 04:22:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 04:22:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 04:22:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 04:22:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 04:22:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 04:22:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 04:22:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 04:22:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 04:22:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 04:22:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 04:22:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 04:22:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 04:22:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 04:22:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 04:22:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 04:22:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 04:22:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 04:22:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 04:22:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 04:22:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 04:22:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 04:22:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 04:22:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 04:22:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 04:22:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 04:22:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 04:22:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 04:22:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 04:22:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 04:22:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 04:22:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 04:22:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 04:22:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 04:22:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 04:22:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:22:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:22:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:22:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:22:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:22:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:22:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 04:22:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:22:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:22:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:22:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:22:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:22:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:22:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:22:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:22:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:22:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:22:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:22:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:22:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:22:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:22:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:22:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:22:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:22:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:22:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:22:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:22:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:22:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:22:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:22:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:22:08,032 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:22:08,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:22:08,150 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 04:22:14,004 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:22:14,031 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:22:14,031 INFO L301 CfgBuilder]: Removed 69 assume(true) statements. [2021-11-19 04:22:14,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:14 BoogieIcfgContainer [2021-11-19 04:22:14,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:22:14,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:22:14,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:22:14,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:22:14,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:22:05" (1/3) ... [2021-11-19 04:22:14,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eff0f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:14, skipping insertion in model container [2021-11-19 04:22:14,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:07" (2/3) ... [2021-11-19 04:22:14,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eff0f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:14, skipping insertion in model container [2021-11-19 04:22:14,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:14" (3/3) ... [2021-11-19 04:22:14,048 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-2.i [2021-11-19 04:22:14,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:22:14,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2021-11-19 04:22:14,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:22:14,126 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:22:14,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2021-11-19 04:22:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 1481 states, 709 states have (on average 2.2637517630465442) internal successors, (1605), 1466 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 04:22:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:22:14,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:14,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:14,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376258, now seen corresponding path program 1 times [2021-11-19 04:22:14,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:14,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930319309] [2021-11-19 04:22:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:14,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:14,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:14,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:14,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:22:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:14,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:22:14,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:14,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:14,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:14,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930319309] [2021-11-19 04:22:14,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930319309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:14,537 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:14,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:22:14,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287449368] [2021-11-19 04:22:14,539 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:14,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:22:14,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:22:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:14,600 INFO L87 Difference]: Start difference. First operand has 1481 states, 709 states have (on average 2.2637517630465442) internal successors, (1605), 1466 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:14,799 INFO L93 Difference]: Finished difference Result 1463 states and 1548 transitions. [2021-11-19 04:22:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:22:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:22:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:14,839 INFO L225 Difference]: With dead ends: 1463 [2021-11-19 04:22:14,839 INFO L226 Difference]: Without dead ends: 1460 [2021-11-19 04:22:14,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:14,845 INFO L933 BasicCegarLoop]: 1548 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:14,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:22:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-19 04:22:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2021-11-19 04:22:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 700 states have (on average 2.1542857142857144) internal successors, (1508), 1446 states have internal predecessors, (1508), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:22:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1545 transitions. [2021-11-19 04:22:14,979 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1545 transitions. Word has length 9 [2021-11-19 04:22:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:14,979 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 1545 transitions. [2021-11-19 04:22:14,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:14,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1545 transitions. [2021-11-19 04:22:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:22:14,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:14,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:14,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 04:22:15,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:15,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376196, now seen corresponding path program 1 times [2021-11-19 04:22:15,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:15,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453155903] [2021-11-19 04:22:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:15,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:15,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:15,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:15,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:22:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:15,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:22:15,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:15,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:15,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:15,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:15,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453155903] [2021-11-19 04:22:15,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453155903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:15,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:15,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:22:15,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265091901] [2021-11-19 04:22:15,569 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:15,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:22:15,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:15,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:22:15,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:22:15,572 INFO L87 Difference]: Start difference. First operand 1460 states and 1545 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:18,575 INFO L93 Difference]: Finished difference Result 1497 states and 1595 transitions. [2021-11-19 04:22:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:22:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:22:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:18,586 INFO L225 Difference]: With dead ends: 1497 [2021-11-19 04:22:18,587 INFO L226 Difference]: Without dead ends: 1497 [2021-11-19 04:22:18,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:22:18,589 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 1137 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:18,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 1069 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 04:22:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-19 04:22:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1443. [2021-11-19 04:22:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 776 states have (on average 1.9974226804123711) internal successors, (1550), 1429 states have internal predecessors, (1550), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:22:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1587 transitions. [2021-11-19 04:22:18,641 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1587 transitions. Word has length 9 [2021-11-19 04:22:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:18,642 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1587 transitions. [2021-11-19 04:22:18,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1587 transitions. [2021-11-19 04:22:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:22:18,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:18,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:18,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:18,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:18,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376195, now seen corresponding path program 1 times [2021-11-19 04:22:18,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:18,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536138683] [2021-11-19 04:22:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:18,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:18,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:18,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:18,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:22:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:19,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:22:19,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:19,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:19,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:19,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:19,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536138683] [2021-11-19 04:22:19,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536138683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:19,155 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:19,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:22:19,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080046802] [2021-11-19 04:22:19,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:19,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:22:19,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:19,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:22:19,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:19,157 INFO L87 Difference]: Start difference. First operand 1443 states and 1587 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:26,334 INFO L93 Difference]: Finished difference Result 1797 states and 1962 transitions. [2021-11-19 04:22:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:22:26,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:22:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:26,347 INFO L225 Difference]: With dead ends: 1797 [2021-11-19 04:22:26,347 INFO L226 Difference]: Without dead ends: 1797 [2021-11-19 04:22:26,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:26,349 INFO L933 BasicCegarLoop]: 1148 mSDtfsCounter, 1097 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:26,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1754 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 04:22:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2021-11-19 04:22:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1599. [2021-11-19 04:22:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 942 states have (on average 1.970276008492569) internal successors, (1856), 1585 states have internal predecessors, (1856), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:22:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1893 transitions. [2021-11-19 04:22:26,405 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1893 transitions. Word has length 9 [2021-11-19 04:22:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:26,405 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 1893 transitions. [2021-11-19 04:22:26,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1893 transitions. [2021-11-19 04:22:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:22:26,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:26,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:26,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:26,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:26,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1932567471, now seen corresponding path program 1 times [2021-11-19 04:22:26,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:26,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456370876] [2021-11-19 04:22:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:26,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:26,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:26,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:26,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:22:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:26,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:22:26,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:26,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:26,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:26,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456370876] [2021-11-19 04:22:26,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456370876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:26,862 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:26,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:22:26,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200383731] [2021-11-19 04:22:26,863 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:26,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:22:26,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:22:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:26,864 INFO L87 Difference]: Start difference. First operand 1599 states and 1893 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:27,020 INFO L93 Difference]: Finished difference Result 2944 states and 3501 transitions. [2021-11-19 04:22:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:22:27,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 04:22:27,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:27,037 INFO L225 Difference]: With dead ends: 2944 [2021-11-19 04:22:27,037 INFO L226 Difference]: Without dead ends: 2944 [2021-11-19 04:22:27,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:27,039 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 2286 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:27,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 3221 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:22:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-11-19 04:22:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2415. [2021-11-19 04:22:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 1758 states have (on average 1.963594994311718) internal successors, (3452), 2395 states have internal predecessors, (3452), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:22:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3501 transitions. [2021-11-19 04:22:27,118 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3501 transitions. Word has length 10 [2021-11-19 04:22:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:27,119 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 3501 transitions. [2021-11-19 04:22:27,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3501 transitions. [2021-11-19 04:22:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:22:27,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:27,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:27,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:27,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:27,331 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1315601158, now seen corresponding path program 1 times [2021-11-19 04:22:27,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:27,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001706266] [2021-11-19 04:22:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:27,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:27,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:27,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:22:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:27,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:22:27,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:27,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:27,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:27,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001706266] [2021-11-19 04:22:27,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001706266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:27,652 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:27,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:22:27,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860722294] [2021-11-19 04:22:27,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:27,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:22:27,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:27,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:22:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:27,654 INFO L87 Difference]: Start difference. First operand 2415 states and 3501 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:27,715 INFO L93 Difference]: Finished difference Result 2355 states and 3415 transitions. [2021-11-19 04:22:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:22:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 04:22:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:27,732 INFO L225 Difference]: With dead ends: 2355 [2021-11-19 04:22:27,732 INFO L226 Difference]: Without dead ends: 2355 [2021-11-19 04:22:27,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:27,734 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 1325 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:27,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 1538 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:22:27,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-19 04:22:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2021-11-19 04:22:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 1722 states have (on average 1.9547038327526132) internal successors, (3366), 2335 states have internal predecessors, (3366), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:22:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3415 transitions. [2021-11-19 04:22:27,837 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3415 transitions. Word has length 15 [2021-11-19 04:22:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:27,838 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3415 transitions. [2021-11-19 04:22:27,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3415 transitions. [2021-11-19 04:22:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 04:22:27,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:27,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:27,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:28,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,052 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:28,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1572327136, now seen corresponding path program 1 times [2021-11-19 04:22:28,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:28,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457321408] [2021-11-19 04:22:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:28,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:28,055 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:28,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:22:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:28,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:22:28,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:28,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:28,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:28,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457321408] [2021-11-19 04:22:28,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457321408] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:28,413 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:28,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:22:28,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044093370] [2021-11-19 04:22:28,414 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:28,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:22:28,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:22:28,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:22:28,415 INFO L87 Difference]: Start difference. First operand 2355 states and 3415 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:28,535 INFO L93 Difference]: Finished difference Result 2327 states and 3359 transitions. [2021-11-19 04:22:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:22:28,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 04:22:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:28,552 INFO L225 Difference]: With dead ends: 2327 [2021-11-19 04:22:28,552 INFO L226 Difference]: Without dead ends: 2327 [2021-11-19 04:22:28,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:22:28,553 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 1296 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:28,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 2836 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:22:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2021-11-19 04:22:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2325. [2021-11-19 04:22:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1706 states have (on average 1.9390386869871044) internal successors, (3308), 2305 states have internal predecessors, (3308), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:22:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3357 transitions. [2021-11-19 04:22:28,620 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3357 transitions. Word has length 17 [2021-11-19 04:22:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:28,620 INFO L470 AbstractCegarLoop]: Abstraction has 2325 states and 3357 transitions. [2021-11-19 04:22:28,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3357 transitions. [2021-11-19 04:22:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:22:28,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:28,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:28,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:28,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:28,835 INFO L85 PathProgramCache]: Analyzing trace with hash 928479182, now seen corresponding path program 1 times [2021-11-19 04:22:28,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:28,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576894101] [2021-11-19 04:22:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:28,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:28,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:28,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:22:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:29,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:22:29,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:29,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:29,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:29,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:29,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576894101] [2021-11-19 04:22:29,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576894101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:29,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:29,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:22:29,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769750900] [2021-11-19 04:22:29,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:29,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:22:29,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:29,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:22:29,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:29,304 INFO L87 Difference]: Start difference. First operand 2325 states and 3357 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:33,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:33,335 INFO L93 Difference]: Finished difference Result 3136 states and 4343 transitions. [2021-11-19 04:22:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:22:33,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:22:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:33,355 INFO L225 Difference]: With dead ends: 3136 [2021-11-19 04:22:33,355 INFO L226 Difference]: Without dead ends: 3136 [2021-11-19 04:22:33,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:22:33,356 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 2519 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:33,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 1411 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 04:22:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2021-11-19 04:22:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2321. [2021-11-19 04:22:33,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 1706 states have (on average 1.9343493552168816) internal successors, (3300), 2301 states have internal predecessors, (3300), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:22:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3349 transitions. [2021-11-19 04:22:33,425 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3349 transitions. Word has length 31 [2021-11-19 04:22:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:33,425 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 3349 transitions. [2021-11-19 04:22:33,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3349 transitions. [2021-11-19 04:22:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:22:33,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:33,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:33,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:33,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:33,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash 928479183, now seen corresponding path program 1 times [2021-11-19 04:22:33,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:33,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713150548] [2021-11-19 04:22:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:33,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:33,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:33,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:33,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:22:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:33,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:22:33,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:33,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:34,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:34,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:34,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713150548] [2021-11-19 04:22:34,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713150548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:34,557 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:34,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:22:34,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364092488] [2021-11-19 04:22:34,558 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:34,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:22:34,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:34,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:22:34,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:22:34,559 INFO L87 Difference]: Start difference. First operand 2321 states and 3349 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:44,927 INFO L93 Difference]: Finished difference Result 2773 states and 3708 transitions. [2021-11-19 04:22:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:22:44,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:22:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:44,943 INFO L225 Difference]: With dead ends: 2773 [2021-11-19 04:22:44,943 INFO L226 Difference]: Without dead ends: 2773 [2021-11-19 04:22:44,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:22:44,944 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 1217 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:44,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 3400 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2021-11-19 04:22:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2021-11-19 04:22:44,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2317. [2021-11-19 04:22:44,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1706 states have (on average 1.9296600234466588) internal successors, (3292), 2297 states have internal predecessors, (3292), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:22:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3341 transitions. [2021-11-19 04:22:45,000 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3341 transitions. Word has length 31 [2021-11-19 04:22:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:45,000 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 3341 transitions. [2021-11-19 04:22:45,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3341 transitions. [2021-11-19 04:22:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 04:22:45,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:45,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:45,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:45,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:45,221 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:45,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:45,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1635573428, now seen corresponding path program 1 times [2021-11-19 04:22:45,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:45,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042242682] [2021-11-19 04:22:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:45,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:45,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:45,223 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:45,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:22:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:45,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:22:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:45,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:45,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:45,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042242682] [2021-11-19 04:22:45,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042242682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:45,679 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:45,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:22:45,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335266145] [2021-11-19 04:22:45,679 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:45,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:22:45,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:22:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:45,681 INFO L87 Difference]: Start difference. First operand 2317 states and 3341 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:45,748 INFO L93 Difference]: Finished difference Result 2305 states and 3321 transitions. [2021-11-19 04:22:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:22:45,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-19 04:22:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:45,760 INFO L225 Difference]: With dead ends: 2305 [2021-11-19 04:22:45,761 INFO L226 Difference]: Without dead ends: 2305 [2021-11-19 04:22:45,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:22:45,762 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 1272 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:45,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 2742 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:22:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2021-11-19 04:22:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2305. [2021-11-19 04:22:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1694 states have (on average 1.9315230224321134) internal successors, (3272), 2285 states have internal predecessors, (3272), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:22:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3321 transitions. [2021-11-19 04:22:45,816 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3321 transitions. Word has length 46 [2021-11-19 04:22:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:45,817 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 3321 transitions. [2021-11-19 04:22:45,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3321 transitions. [2021-11-19 04:22:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 04:22:45,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:45,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:45,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:46,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:46,037 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2024025624, now seen corresponding path program 1 times [2021-11-19 04:22:46,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:46,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836166067] [2021-11-19 04:22:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:46,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:46,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:46,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:46,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:22:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:46,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:22:46,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:46,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:47,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:47,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836166067] [2021-11-19 04:22:47,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836166067] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:47,140 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:47,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:22:47,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423344116] [2021-11-19 04:22:47,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:47,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:22:47,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:22:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:22:47,142 INFO L87 Difference]: Start difference. First operand 2305 states and 3321 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:47,388 INFO L93 Difference]: Finished difference Result 2316 states and 3170 transitions. [2021-11-19 04:22:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:22:47,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-19 04:22:47,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:47,402 INFO L225 Difference]: With dead ends: 2316 [2021-11-19 04:22:47,402 INFO L226 Difference]: Without dead ends: 2316 [2021-11-19 04:22:47,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:22:47,403 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 269 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:47,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2640 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:22:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-11-19 04:22:47,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2121. [2021-11-19 04:22:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 1510 states have (on average 1.9317880794701987) internal successors, (2917), 2101 states have internal predecessors, (2917), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:22:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 2966 transitions. [2021-11-19 04:22:47,449 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 2966 transitions. Word has length 54 [2021-11-19 04:22:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:47,450 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 2966 transitions. [2021-11-19 04:22:47,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 2966 transitions. [2021-11-19 04:22:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 04:22:47,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:47,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:47,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:47,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:47,664 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:22:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash -808871559, now seen corresponding path program 1 times [2021-11-19 04:22:47,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:47,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087533854] [2021-11-19 04:22:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:47,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:47,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:47,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:47,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:22:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:48,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:22:48,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:48,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:48,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:48,740 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:22:48,741 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 26 treesize of output 28 [2021-11-19 04:22:48,747 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:22:48,748 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 25 treesize of output 21 [2021-11-19 04:22:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:48,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:53,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:53,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087533854] [2021-11-19 04:22:53,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087533854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:53,551 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:53,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:22:53,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175018692] [2021-11-19 04:22:53,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:53,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:22:53,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:22:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 04:22:53,553 INFO L87 Difference]: Start difference. First operand 2121 states and 2966 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:03,517 INFO L93 Difference]: Finished difference Result 2827 states and 3606 transitions. [2021-11-19 04:23:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:23:03,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-19 04:23:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:03,555 INFO L225 Difference]: With dead ends: 2827 [2021-11-19 04:23:03,555 INFO L226 Difference]: Without dead ends: 2827 [2021-11-19 04:23:03,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 04:23:03,556 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 1451 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1281 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:03,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 2800 Invalid, 3590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2234 Invalid, 0 Unknown, 1281 Unchecked, 9.9s Time] [2021-11-19 04:23:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-11-19 04:23:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2216. [2021-11-19 04:23:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1637 states have (on average 1.8851557727550396) internal successors, (3086), 2193 states have internal predecessors, (3086), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:23:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3141 transitions. [2021-11-19 04:23:03,608 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3141 transitions. Word has length 57 [2021-11-19 04:23:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:03,609 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 3141 transitions. [2021-11-19 04:23:03,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3141 transitions. [2021-11-19 04:23:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 04:23:03,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:03,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:03,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:03,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:03,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash 63522970, now seen corresponding path program 1 times [2021-11-19 04:23:03,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:03,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559965592] [2021-11-19 04:23:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:03,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:03,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:03,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:03,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:23:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:04,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:23:04,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:04,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:04,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-19 04:23:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:04,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:04,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559965592] [2021-11-19 04:23:04,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559965592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:04,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:04,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:23:04,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269496146] [2021-11-19 04:23:04,790 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:04,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:23:04,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:23:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:04,791 INFO L87 Difference]: Start difference. First operand 2216 states and 3141 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:08,056 INFO L93 Difference]: Finished difference Result 2214 states and 3137 transitions. [2021-11-19 04:23:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:23:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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 59 [2021-11-19 04:23:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:08,074 INFO L225 Difference]: With dead ends: 2214 [2021-11-19 04:23:08,074 INFO L226 Difference]: Without dead ends: 2214 [2021-11-19 04:23:08,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:08,075 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 2930 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:08,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2936 Valid, 1490 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 04:23:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-11-19 04:23:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2214. [2021-11-19 04:23:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 1637 states have (on average 1.8827122785583383) internal successors, (3082), 2191 states have internal predecessors, (3082), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:23:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3137 transitions. [2021-11-19 04:23:08,131 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3137 transitions. Word has length 59 [2021-11-19 04:23:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:08,131 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 3137 transitions. [2021-11-19 04:23:08,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3137 transitions. [2021-11-19 04:23:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 04:23:08,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:08,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:08,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:08,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:08,349 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1667441605, now seen corresponding path program 1 times [2021-11-19 04:23:08,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:08,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587380822] [2021-11-19 04:23:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:08,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:08,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:08,352 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:08,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:23:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:23:08,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:08,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:23:08,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 04:23:08,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 04:23:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:08,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:09,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:09,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587380822] [2021-11-19 04:23:09,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587380822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:09,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:09,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:23:09,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119802271] [2021-11-19 04:23:09,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:09,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:23:09,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:09,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:23:09,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:23:09,026 INFO L87 Difference]: Start difference. First operand 2214 states and 3137 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:13,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:13,593 INFO L93 Difference]: Finished difference Result 2213 states and 3135 transitions. [2021-11-19 04:23:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:23:13,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 04:23:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:13,612 INFO L225 Difference]: With dead ends: 2213 [2021-11-19 04:23:13,620 INFO L226 Difference]: Without dead ends: 2213 [2021-11-19 04:23:13,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:23:13,621 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 4 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:13,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3354 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-19 04:23:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2021-11-19 04:23:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2213. [2021-11-19 04:23:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1637 states have (on average 1.8814905314599877) internal successors, (3080), 2190 states have internal predecessors, (3080), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:23:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3135 transitions. [2021-11-19 04:23:13,696 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3135 transitions. Word has length 62 [2021-11-19 04:23:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:13,696 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 3135 transitions. [2021-11-19 04:23:13,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3135 transitions. [2021-11-19 04:23:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 04:23:13,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:13,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:13,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:13,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:13,906 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1667441604, now seen corresponding path program 1 times [2021-11-19 04:23:13,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:13,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640696464] [2021-11-19 04:23:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:13,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:13,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:13,909 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:13,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:23:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:14,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:23:14,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:14,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:23:14,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 04:23:14,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 04:23:14,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 04:23:14,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 04:23:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:14,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:14,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:14,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640696464] [2021-11-19 04:23:14,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640696464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:14,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:14,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 04:23:14,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147063649] [2021-11-19 04:23:14,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:14,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:23:14,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:23:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:23:14,742 INFO L87 Difference]: Start difference. First operand 2213 states and 3135 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:28,565 INFO L93 Difference]: Finished difference Result 2212 states and 3133 transitions. [2021-11-19 04:23:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:23:28,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 04:23:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:28,571 INFO L225 Difference]: With dead ends: 2212 [2021-11-19 04:23:28,571 INFO L226 Difference]: Without dead ends: 2212 [2021-11-19 04:23:28,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:23:28,572 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 2 mSDsluCounter, 3960 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:28,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5273 Invalid, 3922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2021-11-19 04:23:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-11-19 04:23:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2212. [2021-11-19 04:23:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 1635 states have (on average 1.8825688073394495) internal successors, (3078), 2189 states have internal predecessors, (3078), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:23:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3133 transitions. [2021-11-19 04:23:28,627 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3133 transitions. Word has length 62 [2021-11-19 04:23:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:28,627 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 3133 transitions. [2021-11-19 04:23:28,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:23:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3133 transitions. [2021-11-19 04:23:28,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 04:23:28,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:28,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:28,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 04:23:28,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:28,842 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2058509150, now seen corresponding path program 1 times [2021-11-19 04:23:28,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:28,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947410836] [2021-11-19 04:23:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:28,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:28,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:28,847 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:28,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:23:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:29,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:23:29,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:29,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:29,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:29,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947410836] [2021-11-19 04:23:29,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947410836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:29,369 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:29,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:23:29,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953360497] [2021-11-19 04:23:29,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:29,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:23:29,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:23:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:23:29,371 INFO L87 Difference]: Start difference. First operand 2212 states and 3133 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:29,518 INFO L93 Difference]: Finished difference Result 2222 states and 3150 transitions. [2021-11-19 04:23:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:23:29,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-19 04:23:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:29,525 INFO L225 Difference]: With dead ends: 2222 [2021-11-19 04:23:29,525 INFO L226 Difference]: Without dead ends: 2222 [2021-11-19 04:23:29,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:23:29,526 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 7 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6529 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:29,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6529 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:23:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-11-19 04:23:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2222. [2021-11-19 04:23:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1643 states have (on average 1.8807060255629946) internal successors, (3090), 2198 states have internal predecessors, (3090), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:23:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3150 transitions. [2021-11-19 04:23:29,571 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3150 transitions. Word has length 70 [2021-11-19 04:23:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:29,571 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 3150 transitions. [2021-11-19 04:23:29,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3150 transitions. [2021-11-19 04:23:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 04:23:29,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:29,573 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:29,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:29,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:29,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1077389214, now seen corresponding path program 1 times [2021-11-19 04:23:29,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:29,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11783309] [2021-11-19 04:23:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:29,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:29,788 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:29,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:23:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:30,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:23:30,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:30,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:30,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:30,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11783309] [2021-11-19 04:23:30,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11783309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:23:30,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:23:30,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 04:23:30,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956394679] [2021-11-19 04:23:30,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:23:30,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:23:30,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:23:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:23:30,419 INFO L87 Difference]: Start difference. First operand 2222 states and 3150 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:30,875 INFO L93 Difference]: Finished difference Result 2236 states and 3176 transitions. [2021-11-19 04:23:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:23:30,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-19 04:23:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:30,882 INFO L225 Difference]: With dead ends: 2236 [2021-11-19 04:23:30,882 INFO L226 Difference]: Without dead ends: 2232 [2021-11-19 04:23:30,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:23:30,883 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 30 mSDsluCounter, 6533 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7846 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:30,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 7846 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:23:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2021-11-19 04:23:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2228. [2021-11-19 04:23:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1649 states have (on average 1.8787143723468769) internal successors, (3098), 2204 states have internal predecessors, (3098), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:23:30,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3158 transitions. [2021-11-19 04:23:30,923 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3158 transitions. Word has length 72 [2021-11-19 04:23:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:30,923 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3158 transitions. [2021-11-19 04:23:30,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3158 transitions. [2021-11-19 04:23:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 04:23:30,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:30,924 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:30,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:31,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:31,142 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1730154526, now seen corresponding path program 2 times [2021-11-19 04:23:31,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:31,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638712538] [2021-11-19 04:23:31,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:23:31,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:31,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:31,145 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:31,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 04:23:31,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:23:31,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:23:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:23:31,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:31,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:32,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:32,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638712538] [2021-11-19 04:23:32,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638712538] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:23:32,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:23:32,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-19 04:23:32,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930557178] [2021-11-19 04:23:32,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:23:32,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 04:23:32,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 04:23:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:23:32,283 INFO L87 Difference]: Start difference. First operand 2228 states and 3158 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:33,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:33,914 INFO L93 Difference]: Finished difference Result 2256 states and 3220 transitions. [2021-11-19 04:23:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 04:23:33,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-19 04:23:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:33,920 INFO L225 Difference]: With dead ends: 2256 [2021-11-19 04:23:33,920 INFO L226 Difference]: Without dead ends: 2252 [2021-11-19 04:23:33,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 04:23:33,921 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 99 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 10505 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:33,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 10505 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 04:23:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-19 04:23:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2240. [2021-11-19 04:23:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1661 states have (on average 1.8747742323901264) internal successors, (3114), 2216 states have internal predecessors, (3114), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:23:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3174 transitions. [2021-11-19 04:23:33,960 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3174 transitions. Word has length 76 [2021-11-19 04:23:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:33,960 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 3174 transitions. [2021-11-19 04:23:33,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3174 transitions. [2021-11-19 04:23:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 04:23:33,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:33,962 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:33,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:34,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:34,193 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1222123806, now seen corresponding path program 3 times [2021-11-19 04:23:34,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:34,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454375366] [2021-11-19 04:23:34,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:23:34,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:34,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:34,195 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:34,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 04:23:34,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 04:23:34,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:23:35,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 04:23:35,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:35,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:37,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:37,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454375366] [2021-11-19 04:23:37,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454375366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:23:37,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:23:37,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-19 04:23:37,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140778646] [2021-11-19 04:23:37,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:23:37,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 04:23:37,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 04:23:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 04:23:37,057 INFO L87 Difference]: Start difference. First operand 2240 states and 3174 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:45,558 INFO L93 Difference]: Finished difference Result 2296 states and 3338 transitions. [2021-11-19 04:23:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-19 04:23:45,559 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-19 04:23:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:45,564 INFO L225 Difference]: With dead ends: 2296 [2021-11-19 04:23:45,564 INFO L226 Difference]: Without dead ends: 2290 [2021-11-19 04:23:45,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 04:23:45,567 INFO L933 BasicCegarLoop]: 1323 mSDtfsCounter, 204 mSDsluCounter, 24977 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 26300 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:45,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 26300 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 04:23:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2021-11-19 04:23:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2264. [2021-11-19 04:23:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1685 states have (on average 1.8664688427299703) internal successors, (3145), 2240 states have internal predecessors, (3145), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:23:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3205 transitions. [2021-11-19 04:23:45,614 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3205 transitions. Word has length 84 [2021-11-19 04:23:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:45,614 INFO L470 AbstractCegarLoop]: Abstraction has 2264 states and 3205 transitions. [2021-11-19 04:23:45,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:45,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3205 transitions. [2021-11-19 04:23:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 04:23:45,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:45,616 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:45,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-19 04:23:45,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:45,832 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:23:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash -929383198, now seen corresponding path program 4 times [2021-11-19 04:23:45,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:45,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101498219] [2021-11-19 04:23:45,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 04:23:45,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:45,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:45,834 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:45,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 04:23:46,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 04:23:46,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:23:46,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 04:23:46,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:47,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:23:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:51,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:51,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101498219] [2021-11-19 04:23:51,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101498219] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:23:51,410 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:23:51,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-19 04:23:51,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411725673] [2021-11-19 04:23:51,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:23:51,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 04:23:51,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:51,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 04:23:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 04:23:51,416 INFO L87 Difference]: Start difference. First operand 2264 states and 3205 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:24:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:08,453 INFO L93 Difference]: Finished difference Result 2356 states and 3441 transitions. [2021-11-19 04:24:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-19 04:24:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-19 04:24:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:08,459 INFO L225 Difference]: With dead ends: 2356 [2021-11-19 04:24:08,459 INFO L226 Difference]: Without dead ends: 2352 [2021-11-19 04:24:08,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-19 04:24:08,466 INFO L933 BasicCegarLoop]: 1340 mSDtfsCounter, 309 mSDsluCounter, 41389 mSDsCounter, 0 mSdLazyCounter, 5007 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 42729 SdHoareTripleChecker+Invalid, 5519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 5007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:08,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 42729 Invalid, 5519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [512 Valid, 5007 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-19 04:24:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-11-19 04:24:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2294. [2021-11-19 04:24:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 1715 states have (on average 1.8606413994169095) internal successors, (3191), 2270 states have internal predecessors, (3191), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:24:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3251 transitions. [2021-11-19 04:24:08,519 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3251 transitions. Word has length 100 [2021-11-19 04:24:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:08,519 INFO L470 AbstractCegarLoop]: Abstraction has 2294 states and 3251 transitions. [2021-11-19 04:24:08,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:24:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3251 transitions. [2021-11-19 04:24:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 04:24:08,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:08,521 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:08,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:08,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:08,768 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-19 04:24:08,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1199208670, now seen corresponding path program 5 times [2021-11-19 04:24:08,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:08,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538877081] [2021-11-19 04:24:08,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 04:24:08,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:08,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:08,771 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:08,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c889eb68-fade-4476-a186-b267b32baf20/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 04:24:09,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-19 04:24:09,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:24:09,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-19 04:24:09,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:09,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:24:10,113 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 04:24:10,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-19 04:24:10,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 04:24:10,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27