./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.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_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/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_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/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_1777ed9a-ccf7-430e-a928-6d8d475089dc/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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:40:29,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:40:29,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:40:29,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:40:29,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:40:29,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:40:29,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:40:29,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:40:29,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:40:29,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:40:29,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:40:29,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:40:29,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:40:29,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:40:29,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:40:29,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:40:29,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:40:29,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:40:29,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:40:29,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:40:29,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:40:29,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:40:29,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:40:29,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:40:29,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:40:29,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:40:29,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:40:29,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:40:29,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:40:29,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:40:29,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:40:29,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:40:29,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:40:29,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:40:29,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:40:29,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:40:29,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:40:29,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:40:29,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:40:29,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:40:29,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:40:29,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:40:29,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:40:29,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:40:29,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:40:29,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:40:29,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:40:29,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:40:29,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:40:29,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:40:29,926 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:40:29,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:40:29,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:40:29,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:40:29,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:40:29,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:40:29,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:40:29,930 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:40:29,930 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:40:29,930 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:40:29,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:40:29,931 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:40:29,931 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:40:29,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:40:29,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:40:29,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:40:29,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:40:29,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:40:29,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:40:29,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:40:29,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:40:29,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:40:29,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:40:29,936 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2021-11-19 05:40:30,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:40:30,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:40:30,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:40:30,340 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:40:30,341 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:40:30,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-19 05:40:30,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/cdc811e82/34b04b79d92a48a1a062c4e4248d51a1/FLAG10b8e60e5 [2021-11-19 05:40:31,164 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:40:31,165 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-19 05:40:31,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/cdc811e82/34b04b79d92a48a1a062c4e4248d51a1/FLAG10b8e60e5 [2021-11-19 05:40:31,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/cdc811e82/34b04b79d92a48a1a062c4e4248d51a1 [2021-11-19 05:40:31,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:40:31,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:40:31,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:40:31,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:40:31,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:40:31,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:40:31" (1/1) ... [2021-11-19 05:40:31,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6ceb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:31, skipping insertion in model container [2021-11-19 05:40:31,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:40:31" (1/1) ... [2021-11-19 05:40:31,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:40:31,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:40:31,957 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-19 05:40:32,081 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-19 05:40:32,101 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:40:32,114 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 05:40:32,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14292b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:32, skipping insertion in model container [2021-11-19 05:40:32,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:40:32,115 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 05:40:32,118 INFO L158 Benchmark]: Toolchain (without parser) took 813.59ms. Allocated memory is still 113.2MB. Free memory was 74.2MB in the beginning and 77.4MB in the end (delta: -3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:40:32,119 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 113.2MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:40:32,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 810.14ms. Allocated memory is still 113.2MB. Free memory was 74.0MB in the beginning and 77.4MB in the end (delta: -3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:40:32,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 113.2MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 810.14ms. Allocated memory is still 113.2MB. Free memory was 74.0MB in the beginning and 77.4MB in the end (delta: -3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/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_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/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_1777ed9a-ccf7-430e-a928-6d8d475089dc/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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:40:34,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:40:34,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:40:35,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:40:35,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:40:35,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:40:35,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:40:35,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:40:35,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:40:35,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:40:35,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:40:35,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:40:35,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:40:35,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:40:35,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:40:35,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:40:35,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:40:35,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:40:35,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:40:35,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:40:35,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:40:35,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:40:35,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:40:35,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:40:35,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:40:35,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:40:35,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:40:35,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:40:35,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:40:35,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:40:35,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:40:35,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:40:35,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:40:35,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:40:35,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:40:35,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:40:35,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:40:35,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:40:35,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:40:35,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:40:35,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:40:35,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:40:35,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:40:35,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:40:35,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:40:35,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:40:35,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:40:35,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:40:35,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:40:35,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:40:35,192 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:40:35,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:40:35,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:40:35,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:40:35,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:40:35,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:40:35,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:40:35,195 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:40:35,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:40:35,196 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:40:35,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:40:35,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:40:35,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:40:35,197 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:40:35,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:40:35,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:40:35,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:40:35,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:40:35,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:40:35,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:40:35,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:40:35,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:40:35,199 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:40:35,200 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:40:35,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:40:35,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:40:35,200 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2021-11-19 05:40:35,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:40:35,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:40:35,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:40:35,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:40:35,706 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:40:35,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-19 05:40:35,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/3cc118ec0/04437651225247548dd3de9482a7b40a/FLAG7f2084e50 [2021-11-19 05:40:36,577 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:40:36,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-19 05:40:36,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/3cc118ec0/04437651225247548dd3de9482a7b40a/FLAG7f2084e50 [2021-11-19 05:40:36,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/data/3cc118ec0/04437651225247548dd3de9482a7b40a [2021-11-19 05:40:36,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:40:36,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:40:36,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:40:36,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:40:36,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:40:36,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:40:36" (1/1) ... [2021-11-19 05:40:36,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ae37d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:36, skipping insertion in model container [2021-11-19 05:40:36,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:40:36" (1/1) ... [2021-11-19 05:40:36,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:40:36,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:40:37,500 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-19 05:40:37,687 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-19 05:40:37,712 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:40:37,741 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 05:40:37,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:40:37,797 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-19 05:40:37,883 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-19 05:40:37,897 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:40:37,904 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:40:37,950 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-19 05:40:38,053 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_1777ed9a-ccf7-430e-a928-6d8d475089dc/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-19 05:40:38,064 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:40:38,122 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:40:38,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38 WrapperNode [2021-11-19 05:40:38,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:40:38,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:40:38,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:40:38,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:40:38,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:40:38,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:40:38,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:40:38,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:40:38,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (1/1) ... [2021-11-19 05:40:38,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:40:38,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:40:38,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:40:38,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:40:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:40:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:40:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:40:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:40:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:40:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:40:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:40:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:40:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:40:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:40:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-19 05:40:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:40:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 05:40:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 05:40:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 05:40:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 05:40:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 05:40:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 05:40:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 05:40:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 05:40:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 05:40:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 05:40:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 05:40:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 05:40:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 05:40:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 05:40:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 05:40:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 05:40:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 05:40:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 05:40:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 05:40:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 05:40:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 05:40:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 05:40:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 05:40:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 05:40:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 05:40:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 05:40:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 05:40:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 05:40:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 05:40:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 05:40:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 05:40:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 05:40:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 05:40:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 05:40:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 05:40:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 05:40:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 05:40:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 05:40:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 05:40:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 05:40:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 05:40:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 05:40:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 05:40:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 05:40:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 05:40:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 05:40:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 05:40:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 05:40:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 05:40:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 05:40:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 05:40:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 05:40:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:40:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:40:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:40:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:40:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:40:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:40:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:40:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:40:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:40:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:40:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:40:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:40:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:40:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:40:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:40:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:40:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:40:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:40:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:40:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:40:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:40:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:40:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:40:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:40:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:40:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:40:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:40:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:40:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:40:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:40:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:40:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:40:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:40:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:40:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:40:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:40:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:40:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:40:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:40:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:40:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:40:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:40:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:40:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:40:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:40:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:40:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:40:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:40:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:40:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:40:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:40:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:40:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:40:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:40:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:40:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:40:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:40:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:40:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:40:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:40:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:40:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:40:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:40:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:40:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:40:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:40:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:40:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:40:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:40:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:40:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:40:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:40:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:40:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:40:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:40:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:40:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:40:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:40:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:40:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:40:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:40:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:40:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:40:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:40:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:40:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:40:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:40:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:40:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:40:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:40:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:40:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:40:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:40:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:40:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:40:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:40:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:40:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:40:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:40:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:40:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:40:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:40:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:40:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:40:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:40:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:40:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:40:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:40:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:40:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:40:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:40:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:40:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:40:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-19 05:40:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:40:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:40:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:40:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:40:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:40:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 05:40:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:40:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:40:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 05:40:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:40:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:40:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:40:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:40:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:40:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 05:40:39,189 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:40:39,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:40:39,305 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:40:46,249 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:40:46,279 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:40:46,280 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-19 05:40:46,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:40:46 BoogieIcfgContainer [2021-11-19 05:40:46,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:40:46,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:40:46,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:40:46,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:40:46,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:40:36" (1/3) ... [2021-11-19 05:40:46,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:40:46, skipping insertion in model container [2021-11-19 05:40:46,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:40:38" (2/3) ... [2021-11-19 05:40:46,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:40:46, skipping insertion in model container [2021-11-19 05:40:46,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:40:46" (3/3) ... [2021-11-19 05:40:46,304 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-2.i [2021-11-19 05:40:46,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:40:46,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 641 error locations. [2021-11-19 05:40:46,384 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:40:46,398 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 05:40:46,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 641 error locations. [2021-11-19 05:40:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 1301 states, 635 states have (on average 2.251968503937008) internal successors, (1430), 1288 states have internal predecessors, (1430), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 05:40:46,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:40:46,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:40:46,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:40:46,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:40:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:40:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash -462682456, now seen corresponding path program 1 times [2021-11-19 05:40:46,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:40:46,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865457987] [2021-11-19 05:40:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:46,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:40:46,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:40:46,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:40:46,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:40:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:46,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:40:46,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:40:46,979 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 05:40:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:40:46,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:40:47,064 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 05:40:47,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:40:47,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865457987] [2021-11-19 05:40:47,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865457987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:40:47,067 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:40:47,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:40:47,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946538668] [2021-11-19 05:40:47,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:40:47,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:40:47,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:40:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:40:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:40:47,155 INFO L87 Difference]: Start difference. First operand has 1301 states, 635 states have (on average 2.251968503937008) internal successors, (1430), 1288 states have internal predecessors, (1430), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:40:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:40:50,170 INFO L93 Difference]: Finished difference Result 1481 states and 1587 transitions. [2021-11-19 05:40:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:40:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:40:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:40:50,210 INFO L225 Difference]: With dead ends: 1481 [2021-11-19 05:40:50,210 INFO L226 Difference]: Without dead ends: 1478 [2021-11-19 05:40:50,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:40:50,219 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 1162 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:40:50,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 1058 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 05:40:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-11-19 05:40:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1289. [2021-11-19 05:40:50,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 638 states have (on average 2.109717868338558) internal successors, (1346), 1276 states have internal predecessors, (1346), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 05:40:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1391 transitions. [2021-11-19 05:40:50,375 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1391 transitions. Word has length 7 [2021-11-19 05:40:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:40:50,376 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 1391 transitions. [2021-11-19 05:40:50,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:40:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1391 transitions. [2021-11-19 05:40:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:40:50,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:40:50,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:40:50,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 05:40:50,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:40:50,590 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:40:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:40:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash -462682455, now seen corresponding path program 1 times [2021-11-19 05:40:50,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:40:50,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880125837] [2021-11-19 05:40:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:50,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:40:50,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:40:50,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:40:50,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:40:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:50,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:40:50,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:40:50,903 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 05:40:50,927 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 05:40:50,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:40:51,006 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 05:40:51,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:40:51,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880125837] [2021-11-19 05:40:51,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880125837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:40:51,009 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:40:51,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:40:51,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139692027] [2021-11-19 05:40:51,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:40:51,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:40:51,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:40:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:40:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:40:51,014 INFO L87 Difference]: Start difference. First operand 1289 states and 1391 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:40:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:40:58,835 INFO L93 Difference]: Finished difference Result 1964 states and 2111 transitions. [2021-11-19 05:40:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:40:58,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:40:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:40:58,849 INFO L225 Difference]: With dead ends: 1964 [2021-11-19 05:40:58,849 INFO L226 Difference]: Without dead ends: 1964 [2021-11-19 05:40:58,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:40:58,852 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 1556 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:40:58,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 1989 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-19 05:40:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2021-11-19 05:40:58,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1328. [2021-11-19 05:40:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 685 states have (on average 2.0905109489051097) internal successors, (1432), 1314 states have internal predecessors, (1432), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 05:40:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1479 transitions. [2021-11-19 05:40:58,904 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1479 transitions. Word has length 7 [2021-11-19 05:40:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:40:58,904 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1479 transitions. [2021-11-19 05:40:58,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:40:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1479 transitions. [2021-11-19 05:40:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:40:58,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:40:58,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:40:58,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:40:59,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:40:59,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:40:59,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:40:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1645383808, now seen corresponding path program 1 times [2021-11-19 05:40:59,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:40:59,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930664213] [2021-11-19 05:40:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:59,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:40:59,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:40:59,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:40:59,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:40:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:59,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:40:59,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:40:59,392 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 05:40:59,438 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 05:40:59,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:40:59,534 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 05:40:59,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:40:59,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930664213] [2021-11-19 05:40:59,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930664213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:40:59,535 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:40:59,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:40:59,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822355824] [2021-11-19 05:40:59,536 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:40:59,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:40:59,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:40:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:40:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:40:59,537 INFO L87 Difference]: Start difference. First operand 1328 states and 1479 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:06,686 INFO L93 Difference]: Finished difference Result 1762 states and 1899 transitions. [2021-11-19 05:41:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:41:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 05:41:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:06,698 INFO L225 Difference]: With dead ends: 1762 [2021-11-19 05:41:06,698 INFO L226 Difference]: Without dead ends: 1762 [2021-11-19 05:41:06,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:41:06,700 INFO L933 BasicCegarLoop]: 1419 mSDtfsCounter, 750 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:06,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 2589 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 05:41:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2021-11-19 05:41:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1526. [2021-11-19 05:41:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 892 states have (on average 2.062780269058296) internal successors, (1840), 1511 states have internal predecessors, (1840), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:41:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1889 transitions. [2021-11-19 05:41:06,752 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1889 transitions. Word has length 12 [2021-11-19 05:41:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:06,753 INFO L470 AbstractCegarLoop]: Abstraction has 1526 states and 1889 transitions. [2021-11-19 05:41:06,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1889 transitions. [2021-11-19 05:41:06,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:41:06,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:06,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:41:06,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:06,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:06,972 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1645383807, now seen corresponding path program 1 times [2021-11-19 05:41:06,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:06,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429374867] [2021-11-19 05:41:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:06,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:06,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:06,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:07,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:41:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:07,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:41:07,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:07,240 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 05:41:07,259 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 05:41:07,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:07,308 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 05:41:07,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:07,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429374867] [2021-11-19 05:41:07,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429374867] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:07,309 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:07,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:41:07,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528248288] [2021-11-19 05:41:07,310 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:07,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:41:07,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:41:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:41:07,314 INFO L87 Difference]: Start difference. First operand 1526 states and 1889 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:09,897 INFO L93 Difference]: Finished difference Result 1855 states and 2243 transitions. [2021-11-19 05:41:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:41:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 05:41:09,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:09,911 INFO L225 Difference]: With dead ends: 1855 [2021-11-19 05:41:09,911 INFO L226 Difference]: Without dead ends: 1855 [2021-11-19 05:41:09,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:41:09,916 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 980 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:09,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1620 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 05:41:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-19 05:41:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1479. [2021-11-19 05:41:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 892 states have (on average 2.004484304932735) internal successors, (1788), 1464 states have internal predecessors, (1788), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:41:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1837 transitions. [2021-11-19 05:41:09,984 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1837 transitions. Word has length 12 [2021-11-19 05:41:09,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:09,985 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1837 transitions. [2021-11-19 05:41:09,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1837 transitions. [2021-11-19 05:41:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:41:09,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:09,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:41:10,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:10,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:10,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:10,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1363174597, now seen corresponding path program 1 times [2021-11-19 05:41:10,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:10,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964202565] [2021-11-19 05:41:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:10,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:10,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:10,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:41:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:10,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:41:10,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:10,539 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 05:41:10,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:10,670 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 05:41:10,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:10,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964202565] [2021-11-19 05:41:10,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964202565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:10,671 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:10,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:41:10,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752481682] [2021-11-19 05:41:10,672 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:10,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:41:10,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:41:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:41:10,674 INFO L87 Difference]: Start difference. First operand 1479 states and 1837 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:41:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:11,323 INFO L93 Difference]: Finished difference Result 2292 states and 2867 transitions. [2021-11-19 05:41:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:41:11,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:41:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:11,341 INFO L225 Difference]: With dead ends: 2292 [2021-11-19 05:41:11,341 INFO L226 Difference]: Without dead ends: 2292 [2021-11-19 05:41:11,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 05:41:11,343 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 748 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:11,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 2575 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:41:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2021-11-19 05:41:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1875. [2021-11-19 05:41:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1286 states have (on average 1.989891135303266) internal successors, (2559), 1858 states have internal predecessors, (2559), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2612 transitions. [2021-11-19 05:41:11,428 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2612 transitions. Word has length 15 [2021-11-19 05:41:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:11,428 INFO L470 AbstractCegarLoop]: Abstraction has 1875 states and 2612 transitions. [2021-11-19 05:41:11,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:41:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2612 transitions. [2021-11-19 05:41:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:41:11,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:11,430 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 05:41:11,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:11,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:11,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr344REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:11,649 INFO L85 PathProgramCache]: Analyzing trace with hash -630662469, now seen corresponding path program 1 times [2021-11-19 05:41:11,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:11,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043793929] [2021-11-19 05:41:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:11,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:11,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:11,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:11,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:41:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:11,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:41:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:41:11,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:11,954 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 05:41:11,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:11,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043793929] [2021-11-19 05:41:11,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043793929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:11,955 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:11,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:41:11,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215065963] [2021-11-19 05:41:11,956 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:11,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:41:11,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:41:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:41:11,957 INFO L87 Difference]: Start difference. First operand 1875 states and 2612 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:12,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:12,012 INFO L93 Difference]: Finished difference Result 1998 states and 2672 transitions. [2021-11-19 05:41:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:41:12,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 05:41:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:12,028 INFO L225 Difference]: With dead ends: 1998 [2021-11-19 05:41:12,028 INFO L226 Difference]: Without dead ends: 1998 [2021-11-19 05:41:12,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 05:41:12,029 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 585 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3262 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 05:41:12,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 3262 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:41:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-19 05:41:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1779. [2021-11-19 05:41:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1214 states have (on average 1.9662273476112027) internal successors, (2387), 1762 states have internal predecessors, (2387), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2440 transitions. [2021-11-19 05:41:12,115 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2440 transitions. Word has length 17 [2021-11-19 05:41:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:12,115 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 2440 transitions. [2021-11-19 05:41:12,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2440 transitions. [2021-11-19 05:41:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:41:12,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:12,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:41:12,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:12,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:12,337 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr639ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1411130300, now seen corresponding path program 1 times [2021-11-19 05:41:12,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:12,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094071684] [2021-11-19 05:41:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:12,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:12,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:12,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:12,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:41:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:12,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:41:12,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:12,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:41:12,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:41:12,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:41:12,646 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 05:41:12,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 05:41:12,729 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 05:41:12,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 05:41:12,775 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 05:41:12,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:41:12,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:12,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094071684] [2021-11-19 05:41:12,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094071684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:12,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:12,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:41:12,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644935416] [2021-11-19 05:41:12,880 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:12,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:41:12,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:41:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:41:12,882 INFO L87 Difference]: Start difference. First operand 1779 states and 2440 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 05:41:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:15,147 INFO L93 Difference]: Finished difference Result 2421 states and 3343 transitions. [2021-11-19 05:41:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:41:15,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 05:41:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:15,165 INFO L225 Difference]: With dead ends: 2421 [2021-11-19 05:41:15,166 INFO L226 Difference]: Without dead ends: 2421 [2021-11-19 05:41:15,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:41:15,167 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 922 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:15,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 4779 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 05:41:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-11-19 05:41:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1778. [2021-11-19 05:41:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1213 states have (on average 1.966199505358615) internal successors, (2385), 1761 states have internal predecessors, (2385), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2438 transitions. [2021-11-19 05:41:15,231 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2438 transitions. Word has length 18 [2021-11-19 05:41:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:15,232 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 2438 transitions. [2021-11-19 05:41:15,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 05:41:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2438 transitions. [2021-11-19 05:41:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:41:15,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:15,233 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] [2021-11-19 05:41:15,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:15,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:15,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash 548645739, now seen corresponding path program 1 times [2021-11-19 05:41:15,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:15,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83595146] [2021-11-19 05:41:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:15,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:15,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:15,452 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:15,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:41:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:15,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:41:15,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:41:15,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:15,777 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 05:41:15,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:15,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83595146] [2021-11-19 05:41:15,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83595146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:15,778 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:15,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:41:15,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512217344] [2021-11-19 05:41:15,779 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:15,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:41:15,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:41:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:41:15,780 INFO L87 Difference]: Start difference. First operand 1778 states and 2438 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:15,830 INFO L93 Difference]: Finished difference Result 1718 states and 2352 transitions. [2021-11-19 05:41:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:41:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-19 05:41:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:15,842 INFO L225 Difference]: With dead ends: 1718 [2021-11-19 05:41:15,843 INFO L226 Difference]: Without dead ends: 1718 [2021-11-19 05:41:15,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:41:15,844 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 2266 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:15,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 1322 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:41:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2021-11-19 05:41:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1718. [2021-11-19 05:41:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1177 states have (on average 1.9532710280373833) internal successors, (2299), 1701 states have internal predecessors, (2299), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2352 transitions. [2021-11-19 05:41:15,900 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2352 transitions. Word has length 22 [2021-11-19 05:41:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:15,901 INFO L470 AbstractCegarLoop]: Abstraction has 1718 states and 2352 transitions. [2021-11-19 05:41:15,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2352 transitions. [2021-11-19 05:41:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:41:15,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:15,902 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] [2021-11-19 05:41:15,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:16,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:16,117 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1032421403, now seen corresponding path program 1 times [2021-11-19 05:41:16,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:16,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046162054] [2021-11-19 05:41:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:16,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:16,120 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:16,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:41:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:16,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:41:16,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:16,420 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 05:41:16,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:16,489 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 05:41:16,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:16,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046162054] [2021-11-19 05:41:16,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046162054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:16,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:16,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 05:41:16,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939247445] [2021-11-19 05:41:16,491 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:16,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:41:16,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:16,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:41:16,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:41:16,496 INFO L87 Difference]: Start difference. First operand 1718 states and 2352 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:16,607 INFO L93 Difference]: Finished difference Result 1690 states and 2296 transitions. [2021-11-19 05:41:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:41:16,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 05:41:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:16,616 INFO L225 Difference]: With dead ends: 1690 [2021-11-19 05:41:16,616 INFO L226 Difference]: Without dead ends: 1690 [2021-11-19 05:41:16,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:41:16,617 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 1104 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2548 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 05:41:16,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2548 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:41:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-19 05:41:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1688. [2021-11-19 05:41:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1161 states have (on average 1.930232558139535) internal successors, (2241), 1671 states have internal predecessors, (2241), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2294 transitions. [2021-11-19 05:41:16,667 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2294 transitions. Word has length 24 [2021-11-19 05:41:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:16,668 INFO L470 AbstractCegarLoop]: Abstraction has 1688 states and 2294 transitions. [2021-11-19 05:41:16,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2294 transitions. [2021-11-19 05:41:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:41:16,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:16,670 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] [2021-11-19 05:41:16,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:16,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:16,890 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash 473845043, now seen corresponding path program 1 times [2021-11-19 05:41:16,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:16,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825779944] [2021-11-19 05:41:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:16,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:16,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:16,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:16,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:41:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:17,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:41:17,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:17,196 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 05:41:17,331 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 05:41:17,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:17,483 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 05:41:17,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:17,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825779944] [2021-11-19 05:41:17,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825779944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:17,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:17,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:41:17,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903988740] [2021-11-19 05:41:17,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:17,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:41:17,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:41:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:41:17,486 INFO L87 Difference]: Start difference. First operand 1688 states and 2294 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:20,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:20,661 INFO L93 Difference]: Finished difference Result 2549 states and 3560 transitions. [2021-11-19 05:41:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:41:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 05:41:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:20,681 INFO L225 Difference]: With dead ends: 2549 [2021-11-19 05:41:20,682 INFO L226 Difference]: Without dead ends: 2549 [2021-11-19 05:41:20,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:41:20,683 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 2170 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:20,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 1306 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 05:41:20,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2021-11-19 05:41:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 1684. [2021-11-19 05:41:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1161 states have (on average 1.9233419465977606) internal successors, (2233), 1667 states have internal predecessors, (2233), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2286 transitions. [2021-11-19 05:41:20,760 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2286 transitions. Word has length 38 [2021-11-19 05:41:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:20,760 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 2286 transitions. [2021-11-19 05:41:20,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2286 transitions. [2021-11-19 05:41:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:41:20,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:20,769 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] [2021-11-19 05:41:20,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:20,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:20,983 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash 473845044, now seen corresponding path program 1 times [2021-11-19 05:41:20,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:20,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116782770] [2021-11-19 05:41:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:20,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:20,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:20,986 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:21,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:41:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:21,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:41:21,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:21,293 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 05:41:21,608 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 05:41:21,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:22,194 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 05:41:22,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:22,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116782770] [2021-11-19 05:41:22,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116782770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:22,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:22,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:41:22,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726823576] [2021-11-19 05:41:22,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:22,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:41:22,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:41:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:41:22,197 INFO L87 Difference]: Start difference. First operand 1684 states and 2286 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:32,033 INFO L93 Difference]: Finished difference Result 2102 states and 2512 transitions. [2021-11-19 05:41:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:41:32,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 05:41:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:32,045 INFO L225 Difference]: With dead ends: 2102 [2021-11-19 05:41:32,045 INFO L226 Difference]: Without dead ends: 2102 [2021-11-19 05:41:32,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:41:32,046 INFO L933 BasicCegarLoop]: 1501 mSDtfsCounter, 2136 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:32,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 3439 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 05:41:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-11-19 05:41:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1680. [2021-11-19 05:41:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1161 states have (on average 1.9164513350559862) internal successors, (2225), 1663 states have internal predecessors, (2225), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2278 transitions. [2021-11-19 05:41:32,091 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2278 transitions. Word has length 38 [2021-11-19 05:41:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:32,092 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 2278 transitions. [2021-11-19 05:41:32,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2278 transitions. [2021-11-19 05:41:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 05:41:32,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:32,094 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] [2021-11-19 05:41:32,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 05:41:32,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:32,309 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:32,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1488929842, now seen corresponding path program 1 times [2021-11-19 05:41:32,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:32,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293234620] [2021-11-19 05:41:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:32,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:32,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:32,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:32,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 05:41:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:32,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:41:32,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:41:32,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:32,994 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 05:41:32,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:32,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293234620] [2021-11-19 05:41:32,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293234620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:32,994 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:32,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:41:32,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283924219] [2021-11-19 05:41:32,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:32,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:41:32,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:41:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:41:32,997 INFO L87 Difference]: Start difference. First operand 1680 states and 2278 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 05:41:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:33,064 INFO L93 Difference]: Finished difference Result 1668 states and 2258 transitions. [2021-11-19 05:41:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:41:33,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 56 [2021-11-19 05:41:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:33,076 INFO L225 Difference]: With dead ends: 1668 [2021-11-19 05:41:33,076 INFO L226 Difference]: Without dead ends: 1668 [2021-11-19 05:41:33,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 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 05:41:33,077 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 1080 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2429 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 05:41:33,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 2429 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:41:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-11-19 05:41:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2021-11-19 05:41:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1149 states have (on average 1.919060052219321) internal successors, (2205), 1651 states have internal predecessors, (2205), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:41:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2258 transitions. [2021-11-19 05:41:33,120 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2258 transitions. Word has length 56 [2021-11-19 05:41:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:33,121 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2258 transitions. [2021-11-19 05:41:33,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 05:41:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2258 transitions. [2021-11-19 05:41:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:41:33,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:33,123 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] [2021-11-19 05:41:33,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:33,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:33,338 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1713993986, now seen corresponding path program 1 times [2021-11-19 05:41:33,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:33,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296835525] [2021-11-19 05:41:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:33,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:33,341 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:33,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 05:41:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:33,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:41:33,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:33,789 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 05:41:33,800 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 05:41:34,650 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:41:34,650 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 05:41:34,672 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 05:41:34,672 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 05:41:34,726 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 05:41:34,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:44,182 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 05:41:44,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:44,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296835525] [2021-11-19 05:41:44,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296835525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:44,184 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:44,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:41:44,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023921966] [2021-11-19 05:41:44,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:44,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:41:44,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:41:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=14, Unknown=3, NotChecked=0, Total=30 [2021-11-19 05:41:44,186 INFO L87 Difference]: Start difference. First operand 1668 states and 2258 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:51,374 INFO L93 Difference]: Finished difference Result 2231 states and 2913 transitions. [2021-11-19 05:41:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:41:51,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-19 05:41:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:51,386 INFO L225 Difference]: With dead ends: 2231 [2021-11-19 05:41:51,386 INFO L226 Difference]: Without dead ends: 2231 [2021-11-19 05:41:51,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=19, Invalid=20, Unknown=3, NotChecked=0, Total=42 [2021-11-19 05:41:51,387 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 1603 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1522 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:51,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 2207 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1385 Invalid, 0 Unknown, 1522 Unchecked, 7.1s Time] [2021-11-19 05:41:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2021-11-19 05:41:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1316. [2021-11-19 05:41:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 833 states have (on average 1.8451380552220888) internal successors, (1537), 1301 states have internal predecessors, (1537), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:41:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1586 transitions. [2021-11-19 05:41:51,432 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1586 transitions. Word has length 64 [2021-11-19 05:41:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:51,434 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 1586 transitions. [2021-11-19 05:41:51,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1586 transitions. [2021-11-19 05:41:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:41:51,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:51,435 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] [2021-11-19 05:41:51,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:51,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:51,651 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:51,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2119233215, now seen corresponding path program 1 times [2021-11-19 05:41:51,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:51,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044206443] [2021-11-19 05:41:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:51,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:51,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:51,653 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:51,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 05:41:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:51,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:41:51,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:52,246 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 05:41:52,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:52,323 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 05:41:52,672 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 05:41:52,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:52,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044206443] [2021-11-19 05:41:52,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044206443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:52,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:52,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:41:52,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124272587] [2021-11-19 05:41:52,673 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:52,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:41:52,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:52,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:41:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:41:52,674 INFO L87 Difference]: Start difference. First operand 1316 states and 1586 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 05:41:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:54,745 INFO L93 Difference]: Finished difference Result 1314 states and 1584 transitions. [2021-11-19 05:41:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:41:54,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 66 [2021-11-19 05:41:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:54,755 INFO L225 Difference]: With dead ends: 1314 [2021-11-19 05:41:54,755 INFO L226 Difference]: Without dead ends: 1314 [2021-11-19 05:41:54,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 05:41:54,756 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 2442 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:54,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2447 Valid, 1038 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 05:41:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-11-19 05:41:54,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2021-11-19 05:41:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 833 states have (on average 1.8427370948379351) internal successors, (1535), 1299 states have internal predecessors, (1535), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:41:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1584 transitions. [2021-11-19 05:41:54,788 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1584 transitions. Word has length 66 [2021-11-19 05:41:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:54,789 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1584 transitions. [2021-11-19 05:41:54,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 05:41:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1584 transitions. [2021-11-19 05:41:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:41:54,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:54,790 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] [2021-11-19 05:41:54,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:55,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:55,007 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1942159803, now seen corresponding path program 1 times [2021-11-19 05:41:55,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:55,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734153738] [2021-11-19 05:41:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:55,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:55,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:55,011 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:55,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 05:41:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:41:55,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:41:55,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:41:55,488 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 05:41:55,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 05:41:55,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 05:41:55,555 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 05:41:55,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:55,721 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 05:41:55,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:41:55,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734153738] [2021-11-19 05:41:55,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734153738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:41:55,722 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:41:55,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:41:55,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163000547] [2021-11-19 05:41:55,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:41:55,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:41:55,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:41:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:41:55,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:41:55,725 INFO L87 Difference]: Start difference. First operand 1314 states and 1584 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:41:59,710 INFO L93 Difference]: Finished difference Result 1313 states and 1583 transitions. [2021-11-19 05:41:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:41:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-19 05:41:59,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:41:59,715 INFO L225 Difference]: With dead ends: 1313 [2021-11-19 05:41:59,715 INFO L226 Difference]: Without dead ends: 1313 [2021-11-19 05:41:59,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 3 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 05:41:59,716 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 4 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:41:59,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2993 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 05:41:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-11-19 05:41:59,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1313. [2021-11-19 05:41:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 833 states have (on average 1.8415366146458583) internal successors, (1534), 1298 states have internal predecessors, (1534), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:41:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1583 transitions. [2021-11-19 05:41:59,742 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1583 transitions. Word has length 69 [2021-11-19 05:41:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:41:59,743 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 1583 transitions. [2021-11-19 05:41:59,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:41:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1583 transitions. [2021-11-19 05:41:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:41:59,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:41:59,744 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] [2021-11-19 05:41:59,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 05:41:59,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:41:59,960 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:41:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:41:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1942159802, now seen corresponding path program 1 times [2021-11-19 05:41:59,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:41:59,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228845770] [2021-11-19 05:41:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:41:59,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:41:59,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:41:59,964 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:41:59,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 05:42:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:42:00,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:42:00,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:00,389 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 05:42:00,416 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 05:42:00,427 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 05:42:00,495 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 05:42:00,498 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 05:42:00,522 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 05:42:00,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:42:00,848 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 05:42:00,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:42:00,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228845770] [2021-11-19 05:42:00,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228845770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:42:00,849 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:42:00,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 05:42:00,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261002105] [2021-11-19 05:42:00,849 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:42:00,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:42:00,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:42:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:42:00,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:42:00,851 INFO L87 Difference]: Start difference. First operand 1313 states and 1583 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:42:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:42:13,218 INFO L93 Difference]: Finished difference Result 1312 states and 1582 transitions. [2021-11-19 05:42:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:42:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-19 05:42:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:42:13,223 INFO L225 Difference]: With dead ends: 1312 [2021-11-19 05:42:13,223 INFO L226 Difference]: Without dead ends: 1312 [2021-11-19 05:42:13,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:42:13,224 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 3 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:42:13,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4303 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-11-19 05:42:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-11-19 05:42:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2021-11-19 05:42:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 832 states have (on average 1.8425480769230769) internal successors, (1533), 1297 states have internal predecessors, (1533), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:42:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1582 transitions. [2021-11-19 05:42:13,250 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1582 transitions. Word has length 69 [2021-11-19 05:42:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:42:13,251 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1582 transitions. [2021-11-19 05:42:13,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:42:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1582 transitions. [2021-11-19 05:42:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 05:42:13,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:42:13,253 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:42:13,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 05:42:13,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:42:13,466 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:42:13,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:42:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1428260308, now seen corresponding path program 1 times [2021-11-19 05:42:13,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:42:13,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87916339] [2021-11-19 05:42:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:42:13,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:42:13,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:42:13,469 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:42:13,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 05:42:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:42:13,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:42:13,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:13,900 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 05:42:13,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:42:14,117 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 05:42:14,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:42:14,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87916339] [2021-11-19 05:42:14,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87916339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:42:14,118 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:42:14,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:42:14,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330164435] [2021-11-19 05:42:14,120 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:42:14,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:42:14,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:42:14,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:42:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:42:14,123 INFO L87 Difference]: Start difference. First operand 1312 states and 1582 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:42:14,295 INFO L93 Difference]: Finished difference Result 1322 states and 1595 transitions. [2021-11-19 05:42:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:42:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-19 05:42:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:42:14,301 INFO L225 Difference]: With dead ends: 1322 [2021-11-19 05:42:14,301 INFO L226 Difference]: Without dead ends: 1322 [2021-11-19 05:42:14,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 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 05:42:14,302 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 7 mSDsluCounter, 4527 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:42:14,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5663 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:42:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-19 05:42:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1322. [2021-11-19 05:42:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 840 states have (on average 1.8392857142857142) internal successors, (1545), 1306 states have internal predecessors, (1545), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:42:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1595 transitions. [2021-11-19 05:42:14,349 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1595 transitions. Word has length 77 [2021-11-19 05:42:14,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:42:14,350 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 1595 transitions. [2021-11-19 05:42:14,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1595 transitions. [2021-11-19 05:42:14,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 05:42:14,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:42:14,352 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:42:14,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 05:42:14,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:42:14,566 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:42:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:42:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash 926097644, now seen corresponding path program 1 times [2021-11-19 05:42:14,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:42:14,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560953274] [2021-11-19 05:42:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:42:14,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:42:14,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:42:14,569 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:42:14,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 05:42:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:42:14,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:42:14,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:15,064 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 05:42:15,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:42:15,384 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 05:42:15,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:42:15,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560953274] [2021-11-19 05:42:15,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560953274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:42:15,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:42:15,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 05:42:15,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758417386] [2021-11-19 05:42:15,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:42:15,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:42:15,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:42:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:42:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:42:15,388 INFO L87 Difference]: Start difference. First operand 1322 states and 1595 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:42:15,864 INFO L93 Difference]: Finished difference Result 1336 states and 1613 transitions. [2021-11-19 05:42:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:42:15,866 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-19 05:42:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:42:15,869 INFO L225 Difference]: With dead ends: 1336 [2021-11-19 05:42:15,869 INFO L226 Difference]: Without dead ends: 1332 [2021-11-19 05:42:15,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 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 05:42:15,870 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 23 mSDsluCounter, 5668 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6806 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:42:15,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 6806 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:42:15,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-11-19 05:42:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1328. [2021-11-19 05:42:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 846 states have (on average 1.8356973995271868) internal successors, (1553), 1312 states have internal predecessors, (1553), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:42:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1603 transitions. [2021-11-19 05:42:15,917 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1603 transitions. Word has length 79 [2021-11-19 05:42:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:42:15,918 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1603 transitions. [2021-11-19 05:42:15,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1603 transitions. [2021-11-19 05:42:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 05:42:15,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:42:15,920 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:42:15,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 05:42:16,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:42:16,138 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:42:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:42:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1897684588, now seen corresponding path program 2 times [2021-11-19 05:42:16,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:42:16,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264645075] [2021-11-19 05:42:16,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:42:16,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:42:16,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:42:16,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:42:16,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 05:42:16,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:42:16,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:42:16,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:42:16,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:17,071 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 05:42:17,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:42:17,672 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 05:42:17,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:42:17,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264645075] [2021-11-19 05:42:17,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264645075] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:42:17,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:42:17,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-19 05:42:17,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301436954] [2021-11-19 05:42:17,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:42:17,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:42:17,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:42:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:42:17,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:42:17,676 INFO L87 Difference]: Start difference. First operand 1328 states and 1603 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:42:19,403 INFO L93 Difference]: Finished difference Result 1356 states and 1641 transitions. [2021-11-19 05:42:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 05:42:19,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-19 05:42:19,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:42:19,410 INFO L225 Difference]: With dead ends: 1356 [2021-11-19 05:42:19,413 INFO L226 Difference]: Without dead ends: 1352 [2021-11-19 05:42:19,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 05:42:19,415 INFO L933 BasicCegarLoop]: 1142 mSDtfsCounter, 74 mSDsluCounter, 7969 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 9111 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:42:19,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 9111 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:42:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-11-19 05:42:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1340. [2021-11-19 05:42:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 858 states have (on average 1.8286713286713288) internal successors, (1569), 1324 states have internal predecessors, (1569), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:42:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1619 transitions. [2021-11-19 05:42:19,452 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1619 transitions. Word has length 83 [2021-11-19 05:42:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:42:19,452 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1619 transitions. [2021-11-19 05:42:19,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1619 transitions. [2021-11-19 05:42:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 05:42:19,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:42:19,454 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:42:19,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 05:42:19,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:42:19,670 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:42:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:42:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1564567188, now seen corresponding path program 3 times [2021-11-19 05:42:19,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:42:19,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829549517] [2021-11-19 05:42:19,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:42:19,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:42:19,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:42:19,674 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:42:19,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 05:42:20,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 05:42:20,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:42:20,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:42:20,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:21,417 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 05:42:21,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:42:23,495 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 05:42:23,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:42:23,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829549517] [2021-11-19 05:42:23,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829549517] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:42:23,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:42:23,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-19 05:42:23,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460270827] [2021-11-19 05:42:23,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:42:23,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 05:42:23,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:42:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 05:42:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 05:42:23,499 INFO L87 Difference]: Start difference. First operand 1340 states and 1619 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:42:33,664 INFO L93 Difference]: Finished difference Result 1396 states and 1703 transitions. [2021-11-19 05:42:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-19 05:42:33,665 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-19 05:42:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:42:33,669 INFO L225 Difference]: With dead ends: 1396 [2021-11-19 05:42:33,669 INFO L226 Difference]: Without dead ends: 1390 [2021-11-19 05:42:33,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 05:42:33,673 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 254 mSDsluCounter, 18305 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 19454 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:42:33,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 19454 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 05:42:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-19 05:42:33,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1364. [2021-11-19 05:42:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 882 states have (on average 1.8140589569160999) internal successors, (1600), 1348 states have internal predecessors, (1600), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:42:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1650 transitions. [2021-11-19 05:42:33,706 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1650 transitions. Word has length 91 [2021-11-19 05:42:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:42:33,706 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1650 transitions. [2021-11-19 05:42:33,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:33,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1650 transitions. [2021-11-19 05:42:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 05:42:33,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:42:33,708 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:42:33,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 05:42:33,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:42:33,930 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:42:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:42:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1413345428, now seen corresponding path program 4 times [2021-11-19 05:42:33,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:42:33,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032723781] [2021-11-19 05:42:33,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:42:33,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:42:33,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:42:33,933 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:42:33,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 05:42:34,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:42:34,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:42:34,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 05:42:34,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:35,723 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 05:42:35,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:42:40,884 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 05:42:40,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:42:40,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032723781] [2021-11-19 05:42:40,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032723781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:42:40,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:42:40,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-19 05:42:40,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684972075] [2021-11-19 05:42:40,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:42:40,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 05:42:40,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:42:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 05:42:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 05:42:40,890 INFO L87 Difference]: Start difference. First operand 1364 states and 1650 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:57,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:42:57,620 INFO L93 Difference]: Finished difference Result 1456 states and 1770 transitions. [2021-11-19 05:42:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-19 05:42:57,621 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-19 05:42:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:42:57,624 INFO L225 Difference]: With dead ends: 1456 [2021-11-19 05:42:57,624 INFO L226 Difference]: Without dead ends: 1452 [2021-11-19 05:42:57,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-19 05:42:57,631 INFO L933 BasicCegarLoop]: 1165 mSDtfsCounter, 297 mSDsluCounter, 39389 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 40554 SdHoareTripleChecker+Invalid, 4636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 4113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:42:57,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 40554 Invalid, 4636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [523 Valid, 4113 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-11-19 05:42:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-11-19 05:42:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1394. [2021-11-19 05:42:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 912 states have (on average 1.8048245614035088) internal successors, (1646), 1378 states have internal predecessors, (1646), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:42:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1696 transitions. [2021-11-19 05:42:57,664 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1696 transitions. Word has length 107 [2021-11-19 05:42:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:42:57,665 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1696 transitions. [2021-11-19 05:42:57,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:42:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1696 transitions. [2021-11-19 05:42:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 05:42:57,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:42:57,667 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:42:57,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 05:42:57,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:42:57,887 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-19 05:42:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:42:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash 101973676, now seen corresponding path program 5 times [2021-11-19 05:42:57,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:42:57,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215679420] [2021-11-19 05:42:57,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:42:57,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:42:57,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:42:57,890 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:42:57,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1777ed9a-ccf7-430e-a928-6d8d475089dc/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 05:42:59,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-19 05:42:59,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:42:59,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-19 05:42:59,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:59,218 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 05:42:59,454 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 05:42:59,454 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 21 treesize of output 28 [2021-11-19 05:42:59,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-19 05:42:59,705 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 37 treesize of output 25