./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0134.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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:22:19,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:22:19,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:22:19,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:22:19,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:22:19,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:22:19,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:22:19,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:22:19,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:22:19,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:22:19,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:22:19,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:22:19,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:22:19,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:22:19,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:22:19,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:22:19,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:22:19,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:22:19,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:22:19,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:22:19,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:22:19,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:22:19,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:22:19,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:22:19,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:22:19,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:22:19,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:22:19,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:22:19,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:22:19,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:22:19,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:22:19,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:22:19,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:22:19,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:22:19,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:22:19,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:22:19,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:22:19,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:22:19,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:22:19,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:22:19,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:22:19,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:22:19,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:22:19,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:22:19,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:22:19,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:22:19,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:22:19,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:22:19,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:22:19,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:22:19,764 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:22:19,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:22:19,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:22:19,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:22:19,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:22:19,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:22:19,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:22:19,765 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:22:19,765 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:22:19,766 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:22:19,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:22:19,766 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:22:19,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:22:19,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:22:19,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:22:19,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:22:19,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:22:19,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:19,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:22:19,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:22:19,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:22:19,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:22:19,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:22:19,768 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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-11-19 04:22:20,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:22:20,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:22:20,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:22:20,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:22:20,092 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:22:20,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety/test-0134.i [2021-11-19 04:22:20,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/0d99af0c0/87b9dad76e604372bd48e0e3357b8c9a/FLAGce3b6cbd0 [2021-11-19 04:22:20,727 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:22:20,728 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/sv-benchmarks/c/memsafety/test-0134.i [2021-11-19 04:22:20,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/0d99af0c0/87b9dad76e604372bd48e0e3357b8c9a/FLAGce3b6cbd0 [2021-11-19 04:22:21,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/0d99af0c0/87b9dad76e604372bd48e0e3357b8c9a [2021-11-19 04:22:21,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:22:21,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:22:21,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:21,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:22:21,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:22:21,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:21" (1/1) ... [2021-11-19 04:22:21,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a763b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:21, skipping insertion in model container [2021-11-19 04:22:21,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:21" (1/1) ... [2021-11-19 04:22:21,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:22:21,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:21,392 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:21,402 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 04:22:21,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21ce204d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:21, skipping insertion in model container [2021-11-19 04:22:21,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:21,404 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 04:22:21,406 INFO L158 Benchmark]: Toolchain (without parser) took 380.82ms. Allocated memory is still 107.0MB. Free memory was 67.4MB in the beginning and 77.8MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:22:21,407 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:22:21,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.16ms. Allocated memory is still 107.0MB. Free memory was 67.2MB in the beginning and 77.8MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:22:21,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.16ms. Allocated memory is still 107.0MB. Free memory was 67.2MB in the beginning and 77.8MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 585]: 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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:22:23,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:22:23,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:22:23,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:22:23,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:22:23,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:22:23,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:22:23,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:22:23,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:22:23,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:22:23,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:22:23,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:22:23,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:22:23,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:22:23,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:22:23,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:22:23,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:22:23,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:22:23,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:22:23,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:22:23,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:22:23,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:22:23,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:22:23,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:22:23,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:22:23,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:22:23,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:22:23,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:22:23,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:22:23,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:22:23,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:22:23,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:22:23,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:22:23,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:22:23,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:22:23,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:22:23,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:22:23,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:22:23,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:22:23,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:22:23,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:22:23,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 04:22:23,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:22:23,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:22:23,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:22:23,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:22:23,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:22:23,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:22:23,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:22:23,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:22:23,816 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:22:23,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:22:23,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:22:23,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:22:23,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:22:23,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:22:23,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:22:23,818 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:22:23,818 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:22:23,818 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:22:23,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:22:23,819 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:22:23,819 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:22:23,819 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:22:23,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:22:23,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:22:23,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:22:23,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:22:23,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:22:23,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:23,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:22:23,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:22:23,821 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:22:23,822 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:22:23,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:22:23,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:22:23,822 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_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-11-19 04:22:24,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:22:24,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:22:24,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:22:24,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:22:24,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:22:24,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety/test-0134.i [2021-11-19 04:22:24,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/22e7f9cef/ae0bf7750cef4b25b25f1758f12e3cbe/FLAGac6e2a3dd [2021-11-19 04:22:24,919 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:22:24,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/sv-benchmarks/c/memsafety/test-0134.i [2021-11-19 04:22:24,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/22e7f9cef/ae0bf7750cef4b25b25f1758f12e3cbe/FLAGac6e2a3dd [2021-11-19 04:22:25,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/data/22e7f9cef/ae0bf7750cef4b25b25f1758f12e3cbe [2021-11-19 04:22:25,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:22:25,228 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:22:25,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:25,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:22:25,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:22:25,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:25,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2271db62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25, skipping insertion in model container [2021-11-19 04:22:25,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:25,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:22:25,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:25,732 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:25,755 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 04:22:25,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:22:25,845 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:25,856 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:22:25,930 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:22:25,971 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:22:25,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25 WrapperNode [2021-11-19 04:22:25,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:22:25,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:22:25,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:22:25,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:22:25,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:25,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:26,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:26,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:26,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:26,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:26,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:26,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:22:26,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:22:26,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:22:26,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:22:26,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (1/1) ... [2021-11-19 04:22:26,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:22:26,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:22:26,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:22:26,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:22:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:22:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:22:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:22:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:22:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 04:22:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 04:22:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 04:22:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 04:22:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 04:22:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-19 04:22:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-19 04:22:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-11-19 04:22:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-19 04:22:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-19 04:22:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2021-11-19 04:22:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2021-11-19 04:22:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2021-11-19 04:22:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2021-11-19 04:22:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-11-19 04:22:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_seek_max [2021-11-19 04:22:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2021-11-19 04:22:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:22:26,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:22:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:22:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:22:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:22:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:22:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:22:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:22:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:22:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:22:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:22:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:22:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:22:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:22:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:22:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:22:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:22:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:22:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:22:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:22:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:22:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:22:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:22:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 04:22:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 04:22:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 04:22:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 04:22:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 04:22:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:22:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:22:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:22:26,175 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:22:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:22:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:22:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:22:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:22:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:22:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:22:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:22:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:22:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:22:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:22:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:22:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:22:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:22:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:22:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:22:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:22:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:22:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:22:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:22:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:22:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:22:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:22:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:22:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:22:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:22:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:22:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:22:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:22:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:22:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:22:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:22:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:22:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:22:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:22:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:22:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:22:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:22:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:22:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:22:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:22:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:22:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:22:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:22:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:22:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:22:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:22:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:22:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:22:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:22:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:22:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:22:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:22:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:22:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:22:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:22:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:22:26,210 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:22:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:22:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:22:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:22:26,211 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:22:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:22:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:22:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:22:26,212 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:22:26,213 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:22:26,213 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:22:26,213 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:22:26,214 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:22:26,217 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:22:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:22:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:22:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:22:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:22:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:22:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:22:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:22:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:22:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 04:22:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-19 04:22:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:22:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-19 04:22:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:22:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-11-19 04:22:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-19 04:22:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-19 04:22:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2021-11-19 04:22:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2021-11-19 04:22:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:22:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:22:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2021-11-19 04:22:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2021-11-19 04:22:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:22:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-11-19 04:22:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:22:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure gl_seek_max [2021-11-19 04:22:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2021-11-19 04:22:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:22:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 04:22:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:22:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:22:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:22:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:22:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:22:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:22:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:22:26,515 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:22:26,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:22:27,110 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:22:27,120 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:22:27,120 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 04:22:27,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:27 BoogieIcfgContainer [2021-11-19 04:22:27,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:22:27,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:22:27,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:22:27,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:22:27,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:22:25" (1/3) ... [2021-11-19 04:22:27,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25face60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:27, skipping insertion in model container [2021-11-19 04:22:27,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:22:25" (2/3) ... [2021-11-19 04:22:27,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25face60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:22:27, skipping insertion in model container [2021-11-19 04:22:27,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:27" (3/3) ... [2021-11-19 04:22:27,131 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0134.i [2021-11-19 04:22:27,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:22:27,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2021-11-19 04:22:27,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:22:27,191 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:22:27,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2021-11-19 04:22:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 125 states have internal predecessors, (135), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 04:22:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:22:27,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:27,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:27,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:22:27,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1666329584, now seen corresponding path program 1 times [2021-11-19 04:22:27,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:27,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136943822] [2021-11-19 04:22:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:27,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:27,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:27,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:27,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:22:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:27,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:22:27,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:27,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:27,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:27,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136943822] [2021-11-19 04:22:27,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136943822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:27,624 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:27,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:22:27,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692543901] [2021-11-19 04:22:27,627 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:27,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:22:27,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:22:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:27,673 INFO L87 Difference]: Start difference. First operand has 157 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 125 states have internal predecessors, (135), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:27,719 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2021-11-19 04:22:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:22:27,721 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 04:22:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:27,735 INFO L225 Difference]: With dead ends: 157 [2021-11-19 04:22:27,735 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 04:22:27,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:22:27,741 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:27,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:22:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 04:22:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-19 04:22:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 123 states have internal predecessors, (128), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:22:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2021-11-19 04:22:27,798 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 10 [2021-11-19 04:22:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:27,799 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2021-11-19 04:22:27,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2021-11-19 04:22:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:22:27,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:27,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:27,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 04:22:28,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,010 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gl_insertErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:22:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:28,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1666329522, now seen corresponding path program 1 times [2021-11-19 04:22:28,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:28,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661089458] [2021-11-19 04:22:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:28,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:28,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:28,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:22:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:28,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:22:28,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:28,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:28,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:28,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:28,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661089458] [2021-11-19 04:22:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661089458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:28,307 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:28,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:22:28,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692835008] [2021-11-19 04:22:28,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:28,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:22:28,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:22:28,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:22:28,310 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:28,536 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2021-11-19 04:22:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:22:28,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 04:22:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:28,539 INFO L225 Difference]: With dead ends: 153 [2021-11-19 04:22:28,540 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 04:22:28,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:22:28,542 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 3 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:28,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 269 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:22:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 04:22:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-19 04:22:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 122 states have internal predecessors, (127), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:22:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2021-11-19 04:22:28,572 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 10 [2021-11-19 04:22:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:28,573 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2021-11-19 04:22:28,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2021-11-19 04:22:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:22:28,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:28,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:28,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:28,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gl_insertErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:22:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1666329521, now seen corresponding path program 1 times [2021-11-19 04:22:28,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:28,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229169534] [2021-11-19 04:22:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:28,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:28,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:28,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:22:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:28,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:22:28,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:28,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:28,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:29,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:29,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229169534] [2021-11-19 04:22:29,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229169534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:29,074 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:29,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:22:29,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734545202] [2021-11-19 04:22:29,075 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:29,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:22:29,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:29,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:22:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:29,076 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:29,428 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2021-11-19 04:22:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:22:29,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 04:22:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:29,431 INFO L225 Difference]: With dead ends: 152 [2021-11-19 04:22:29,431 INFO L226 Difference]: Without dead ends: 152 [2021-11-19 04:22:29,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:22:29,433 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 4 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:29,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 273 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:22:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-19 04:22:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-19 04:22:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 121 states have internal predecessors, (126), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:22:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2021-11-19 04:22:29,456 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 10 [2021-11-19 04:22:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:29,457 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2021-11-19 04:22:29,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:29,457 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2021-11-19 04:22:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 04:22:29,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:29,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:29,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:29,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:29,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:22:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash -390579196, now seen corresponding path program 1 times [2021-11-19 04:22:29,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:29,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386812] [2021-11-19 04:22:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:29,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:29,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:29,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:29,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:22:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:29,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 04:22:29,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:29,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:29,936 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 04:22:29,938 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 22 treesize of output 29 [2021-11-19 04:22:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:30,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:44,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:44,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386812] [2021-11-19 04:22:44,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386812] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:44,535 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:44,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 04:22:44,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942367485] [2021-11-19 04:22:44,535 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:44,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:22:44,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:22:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-19 04:22:44,537 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:22:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:45,075 INFO L93 Difference]: Finished difference Result 217 states and 237 transitions. [2021-11-19 04:22:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:22:45,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-19 04:22:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:45,079 INFO L225 Difference]: With dead ends: 217 [2021-11-19 04:22:45,079 INFO L226 Difference]: Without dead ends: 217 [2021-11-19 04:22:45,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-19 04:22:45,081 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 105 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:45,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 863 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 278 Invalid, 0 Unknown, 318 Unchecked, 0.5s Time] [2021-11-19 04:22:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-19 04:22:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2021-11-19 04:22:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 150 states have internal predecessors, (177), 29 states have call successors, (29), 21 states have call predecessors, (29), 18 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-19 04:22:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 235 transitions. [2021-11-19 04:22:45,100 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 235 transitions. Word has length 13 [2021-11-19 04:22:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:45,100 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 235 transitions. [2021-11-19 04:22:45,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:22:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 235 transitions. [2021-11-19 04:22:45,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 04:22:45,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:45,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:45,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:45,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:45,318 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:22:45,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:45,318 INFO L85 PathProgramCache]: Analyzing trace with hash -390579195, now seen corresponding path program 1 times [2021-11-19 04:22:45,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:45,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789930486] [2021-11-19 04:22:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:45,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:45,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:45,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:45,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:22:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:45,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 04:22:45,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:45,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:45,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:22:45,659 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:22:45,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-19 04:22:45,667 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:22:45,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 04:22:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:45,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:55,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:55,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789930486] [2021-11-19 04:22:55,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789930486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:55,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:55,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 04:22:55,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986301108] [2021-11-19 04:22:55,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:55,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:22:55,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:55,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:22:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-19 04:22:55,018 INFO L87 Difference]: Start difference. First operand 196 states and 235 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:22:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:55,680 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2021-11-19 04:22:55,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:22:55,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-19 04:22:55,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:55,684 INFO L225 Difference]: With dead ends: 196 [2021-11-19 04:22:55,684 INFO L226 Difference]: Without dead ends: 196 [2021-11-19 04:22:55,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-19 04:22:55,686 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 2 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:55,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 657 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 138 Unchecked, 0.6s Time] [2021-11-19 04:22:55,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-19 04:22:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-11-19 04:22:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 104 states have (on average 1.6923076923076923) internal successors, (176), 150 states have internal predecessors, (176), 29 states have call successors, (29), 21 states have call predecessors, (29), 18 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-19 04:22:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 234 transitions. [2021-11-19 04:22:55,701 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 234 transitions. Word has length 13 [2021-11-19 04:22:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:55,702 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 234 transitions. [2021-11-19 04:22:55,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:22:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 234 transitions. [2021-11-19 04:22:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 04:22:55,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:55,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:55,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:55,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:55,915 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:22:55,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:55,916 INFO L85 PathProgramCache]: Analyzing trace with hash -678212586, now seen corresponding path program 1 times [2021-11-19 04:22:55,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:55,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317713137] [2021-11-19 04:22:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:55,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:55,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:55,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:55,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:22:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:56,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 04:22:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:56,120 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-19 04:22:56,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 21 [2021-11-19 04:22:56,375 INFO L354 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-11-19 04:22:56,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 34 [2021-11-19 04:22:56,637 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 04:22:56,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 15 [2021-11-19 04:22:56,714 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 17 [2021-11-19 04:22:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:56,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:56,867 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-19 04:22:56,867 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 27 treesize of output 26 [2021-11-19 04:23:14,015 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_13 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_13))))) (= (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13) gl_insert_~node~0.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.base|))) is different from false [2021-11-19 04:23:16,073 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~0.base_13 (_ BitVec 32)) (gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~0.base_13)))))) (= (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_13) gl_insert_~node~0.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.base|))) is different from false [2021-11-19 04:23:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:16,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:23:16,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317713137] [2021-11-19 04:23:16,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317713137] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:23:16,312 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:23:16,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 11] imperfect sequences [] total 13 [2021-11-19 04:23:16,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302153027] [2021-11-19 04:23:16,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:23:16,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 04:23:16,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:23:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 04:23:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=8, NotChecked=42, Total=182 [2021-11-19 04:23:16,314 INFO L87 Difference]: Start difference. First operand 196 states and 234 transitions. Second operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:23:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:19,419 INFO L93 Difference]: Finished difference Result 212 states and 250 transitions. [2021-11-19 04:23:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 04:23:19,421 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-19 04:23:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:19,423 INFO L225 Difference]: With dead ends: 212 [2021-11-19 04:23:19,423 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 04:23:19,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=70, Invalid=271, Unknown=9, NotChecked=70, Total=420 [2021-11-19 04:23:19,425 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 46 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:19,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1246 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 311 Invalid, 0 Unknown, 308 Unchecked, 0.8s Time] [2021-11-19 04:23:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 04:23:19,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204. [2021-11-19 04:23:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 110 states have (on average 1.7181818181818183) internal successors, (189), 157 states have internal predecessors, (189), 30 states have call successors, (30), 22 states have call predecessors, (30), 19 states have return successors, (30), 25 states have call predecessors, (30), 29 states have call successors, (30) [2021-11-19 04:23:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 249 transitions. [2021-11-19 04:23:19,439 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 249 transitions. Word has length 16 [2021-11-19 04:23:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:19,439 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 249 transitions. [2021-11-19 04:23:19,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:23:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 249 transitions. [2021-11-19 04:23:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 04:23:19,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:19,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:19,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:19,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:19,656 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:23:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash -678212585, now seen corresponding path program 1 times [2021-11-19 04:23:19,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:19,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110591309] [2021-11-19 04:23:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:23:19,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:19,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:19,658 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:19,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:23:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:23:19,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-19 04:23:19,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:19,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:23:19,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:23:20,156 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-19 04:23:20,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-19 04:23:20,192 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:23:20,192 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 16 treesize of output 16 [2021-11-19 04:23:20,384 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 04:23:20,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 71 [2021-11-19 04:23:20,462 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 04:23:20,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 23 [2021-11-19 04:23:20,687 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 34 treesize of output 26 [2021-11-19 04:23:20,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-19 04:23:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:23:20,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:25,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:25,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110591309] [2021-11-19 04:24:25,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110591309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:25,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:25,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 18 [2021-11-19 04:24:25,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539363883] [2021-11-19 04:24:25,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:25,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 04:24:25,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:25,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 04:24:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=277, Unknown=16, NotChecked=0, Total=342 [2021-11-19 04:24:25,106 INFO L87 Difference]: Start difference. First operand 204 states and 249 transitions. Second operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:24:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:26,733 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2021-11-19 04:24:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:24:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-19 04:24:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:26,736 INFO L225 Difference]: With dead ends: 204 [2021-11-19 04:24:26,736 INFO L226 Difference]: Without dead ends: 204 [2021-11-19 04:24:26,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 63.3s TimeCoverageRelationStatistics Valid=55, Invalid=309, Unknown=16, NotChecked=0, Total=380 [2021-11-19 04:24:26,738 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 4 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:26,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1375 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 387 Unchecked, 1.3s Time] [2021-11-19 04:24:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-19 04:24:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-11-19 04:24:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 110 states have (on average 1.709090909090909) internal successors, (188), 157 states have internal predecessors, (188), 30 states have call successors, (30), 22 states have call predecessors, (30), 19 states have return successors, (30), 25 states have call predecessors, (30), 29 states have call successors, (30) [2021-11-19 04:24:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 248 transitions. [2021-11-19 04:24:26,749 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 248 transitions. Word has length 16 [2021-11-19 04:24:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:26,750 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 248 transitions. [2021-11-19 04:24:26,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 8 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:24:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 248 transitions. [2021-11-19 04:24:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 04:24:26,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:26,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:26,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:26,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:26,954 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr2REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:26,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:26,954 INFO L85 PathProgramCache]: Analyzing trace with hash 450246382, now seen corresponding path program 1 times [2021-11-19 04:24:26,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:26,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508421642] [2021-11-19 04:24:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:26,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:26,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:26,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:26,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:24:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:27,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:24:27,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:27,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:24:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:27,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:27,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:27,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508421642] [2021-11-19 04:24:27,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508421642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:27,282 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:27,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 04:24:27,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374364890] [2021-11-19 04:24:27,282 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:27,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:24:27,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:27,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:24:27,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:24:27,283 INFO L87 Difference]: Start difference. First operand 204 states and 248 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:24:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:27,970 INFO L93 Difference]: Finished difference Result 224 states and 265 transitions. [2021-11-19 04:24:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:24:27,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 04:24:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:27,979 INFO L225 Difference]: With dead ends: 224 [2021-11-19 04:24:27,979 INFO L226 Difference]: Without dead ends: 224 [2021-11-19 04:24:27,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:24:27,980 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 39 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:27,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 657 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 04:24:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-19 04:24:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2021-11-19 04:24:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 120 states have (on average 1.6916666666666667) internal successors, (203), 166 states have internal predecessors, (203), 31 states have call successors, (31), 24 states have call predecessors, (31), 21 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 04:24:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 265 transitions. [2021-11-19 04:24:27,992 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 265 transitions. Word has length 17 [2021-11-19 04:24:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:27,992 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 265 transitions. [2021-11-19 04:24:27,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:24:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 265 transitions. [2021-11-19 04:24:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 04:24:27,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:27,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:28,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 04:24:28,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:28,205 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr3REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:28,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash 450246383, now seen corresponding path program 1 times [2021-11-19 04:24:28,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:28,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541249400] [2021-11-19 04:24:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:28,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:28,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:28,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:24:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:28,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 04:24:28,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:28,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:24:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:28,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:29,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:29,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541249400] [2021-11-19 04:24:29,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541249400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:29,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:29,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-19 04:24:29,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068129177] [2021-11-19 04:24:29,022 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:29,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 04:24:29,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:29,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 04:24:29,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:24:29,024 INFO L87 Difference]: Start difference. First operand 216 states and 265 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:24:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:30,951 INFO L93 Difference]: Finished difference Result 222 states and 261 transitions. [2021-11-19 04:24:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:24:30,952 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 04:24:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:30,954 INFO L225 Difference]: With dead ends: 222 [2021-11-19 04:24:30,954 INFO L226 Difference]: Without dead ends: 222 [2021-11-19 04:24:30,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:24:30,955 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 50 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:30,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 887 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 04:24:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-19 04:24:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 216. [2021-11-19 04:24:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 120 states have (on average 1.6583333333333334) internal successors, (199), 166 states have internal predecessors, (199), 31 states have call successors, (31), 24 states have call predecessors, (31), 21 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 04:24:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 261 transitions. [2021-11-19 04:24:30,966 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 261 transitions. Word has length 17 [2021-11-19 04:24:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:30,967 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 261 transitions. [2021-11-19 04:24:30,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:24:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 261 transitions. [2021-11-19 04:24:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 04:24:30,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:30,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:30,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 04:24:31,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:31,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr6REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:31,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1104921519, now seen corresponding path program 1 times [2021-11-19 04:24:31,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:31,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233281751] [2021-11-19 04:24:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:31,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:31,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:31,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:31,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:24:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:24:31,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:31,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:31,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:31,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233281751] [2021-11-19 04:24:31,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233281751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:31,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:31,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:24:31,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944683284] [2021-11-19 04:24:31,432 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:31,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:24:31,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:24:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:24:31,434 INFO L87 Difference]: Start difference. First operand 216 states and 261 transitions. Second operand has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:24:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:31,809 INFO L93 Difference]: Finished difference Result 215 states and 258 transitions. [2021-11-19 04:24:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:24:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-19 04:24:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:31,812 INFO L225 Difference]: With dead ends: 215 [2021-11-19 04:24:31,812 INFO L226 Difference]: Without dead ends: 215 [2021-11-19 04:24:31,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:24:31,814 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 22 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:31,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 457 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:24:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-19 04:24:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-11-19 04:24:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 120 states have (on average 1.6333333333333333) internal successors, (196), 165 states have internal predecessors, (196), 31 states have call successors, (31), 24 states have call predecessors, (31), 21 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 04:24:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 258 transitions. [2021-11-19 04:24:31,825 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 258 transitions. Word has length 19 [2021-11-19 04:24:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:31,825 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 258 transitions. [2021-11-19 04:24:31,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:24:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 258 transitions. [2021-11-19 04:24:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 04:24:31,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:31,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:31,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 04:24:32,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:32,038 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr7REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1104921518, now seen corresponding path program 1 times [2021-11-19 04:24:32,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:32,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258132923] [2021-11-19 04:24:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:32,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:32,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:32,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:24:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:32,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:24:32,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:32,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:32,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 04:24:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:32,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:32,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258132923] [2021-11-19 04:24:32,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258132923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:32,844 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:32,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-19 04:24:32,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85359514] [2021-11-19 04:24:32,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:32,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 04:24:32,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:32,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 04:24:32,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:24:32,846 INFO L87 Difference]: Start difference. First operand 215 states and 258 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:24:34,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:34,625 INFO L93 Difference]: Finished difference Result 218 states and 255 transitions. [2021-11-19 04:24:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 04:24:34,626 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-19 04:24:34,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:34,628 INFO L225 Difference]: With dead ends: 218 [2021-11-19 04:24:34,628 INFO L226 Difference]: Without dead ends: 218 [2021-11-19 04:24:34,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-11-19 04:24:34,629 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 346 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:34,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 983 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 04:24:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-19 04:24:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2021-11-19 04:24:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 120 states have (on average 1.6083333333333334) internal successors, (193), 164 states have internal predecessors, (193), 31 states have call successors, (31), 24 states have call predecessors, (31), 21 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 04:24:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 255 transitions. [2021-11-19 04:24:34,640 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 255 transitions. Word has length 19 [2021-11-19 04:24:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:34,640 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 255 transitions. [2021-11-19 04:24:34,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:24:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 255 transitions. [2021-11-19 04:24:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 04:24:34,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:34,642 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] [2021-11-19 04:24:34,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:34,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:34,854 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_emptyErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:34,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:34,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1290860317, now seen corresponding path program 1 times [2021-11-19 04:24:34,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:34,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021540257] [2021-11-19 04:24:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:34,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:34,856 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:34,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:24:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:34,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:24:34,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:35,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:35,521 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 04:24:35,523 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 21 treesize of output 20 [2021-11-19 04:24:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:35,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:35,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021540257] [2021-11-19 04:24:35,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021540257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:35,546 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:35,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-11-19 04:24:35,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25564827] [2021-11-19 04:24:35,546 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:35,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:24:35,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:24:35,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:24:35,548 INFO L87 Difference]: Start difference. First operand 214 states and 255 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 04:24:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:35,802 INFO L93 Difference]: Finished difference Result 220 states and 260 transitions. [2021-11-19 04:24:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:24:35,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-11-19 04:24:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:35,805 INFO L225 Difference]: With dead ends: 220 [2021-11-19 04:24:35,805 INFO L226 Difference]: Without dead ends: 220 [2021-11-19 04:24:35,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:24:35,806 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 23 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:35,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 501 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2021-11-19 04:24:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-19 04:24:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2021-11-19 04:24:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 124 states have (on average 1.596774193548387) internal successors, (198), 168 states have internal predecessors, (198), 31 states have call successors, (31), 25 states have call predecessors, (31), 22 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 04:24:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2021-11-19 04:24:35,816 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 34 [2021-11-19 04:24:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:35,817 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2021-11-19 04:24:35,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 04:24:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2021-11-19 04:24:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 04:24:35,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:35,819 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] [2021-11-19 04:24:35,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:36,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:36,030 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_emptyErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1290860316, now seen corresponding path program 1 times [2021-11-19 04:24:36,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:36,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006691416] [2021-11-19 04:24:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:36,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:36,033 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:36,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:24:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:36,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 04:24:36,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:36,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:36,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 04:24:37,512 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:24:37,513 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 16 treesize of output 20 [2021-11-19 04:24:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:37,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:37,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006691416] [2021-11-19 04:24:37,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006691416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:24:37,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:24:37,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-11-19 04:24:37,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064025674] [2021-11-19 04:24:37,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:24:37,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 04:24:37,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 04:24:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-19 04:24:37,747 INFO L87 Difference]: Start difference. First operand 219 states and 260 transitions. Second operand has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 04:24:40,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:40,003 INFO L93 Difference]: Finished difference Result 217 states and 253 transitions. [2021-11-19 04:24:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:24:40,005 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 34 [2021-11-19 04:24:40,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:40,006 INFO L225 Difference]: With dead ends: 217 [2021-11-19 04:24:40,006 INFO L226 Difference]: Without dead ends: 217 [2021-11-19 04:24:40,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-11-19 04:24:40,007 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 505 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:40,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 560 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 04:24:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-19 04:24:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2021-11-19 04:24:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 124 states have (on average 1.5403225806451613) internal successors, (191), 164 states have internal predecessors, (191), 31 states have call successors, (31), 25 states have call predecessors, (31), 22 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 04:24:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 253 transitions. [2021-11-19 04:24:40,019 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 253 transitions. Word has length 34 [2021-11-19 04:24:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:40,019 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 253 transitions. [2021-11-19 04:24:40,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 04:24:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 253 transitions. [2021-11-19 04:24:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 04:24:40,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:40,021 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:40,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-19 04:24:40,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:40,225 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1645490399, now seen corresponding path program 1 times [2021-11-19 04:24:40,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:40,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650491781] [2021-11-19 04:24:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:40,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:40,228 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:40,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:24:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:40,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 04:24:40,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:40,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:24:40,683 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 04:24:40,684 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 21 treesize of output 26 [2021-11-19 04:24:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:40,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:41,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:24:41,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650491781] [2021-11-19 04:24:41,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650491781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:24:41,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:24:41,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2021-11-19 04:24:41,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912865083] [2021-11-19 04:24:41,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:24:41,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:24:41,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:24:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:24:41,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:24:41,140 INFO L87 Difference]: Start difference. First operand 215 states and 253 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:24:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:24:41,444 INFO L93 Difference]: Finished difference Result 217 states and 252 transitions. [2021-11-19 04:24:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:24:41,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2021-11-19 04:24:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:24:41,447 INFO L225 Difference]: With dead ends: 217 [2021-11-19 04:24:41,447 INFO L226 Difference]: Without dead ends: 217 [2021-11-19 04:24:41,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:24:41,448 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 20 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:24:41,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 366 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 69 Unchecked, 0.3s Time] [2021-11-19 04:24:41,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-19 04:24:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2021-11-19 04:24:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 124 states have (on average 1.532258064516129) internal successors, (190), 164 states have internal predecessors, (190), 31 states have call successors, (31), 25 states have call predecessors, (31), 22 states have return successors, (31), 26 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-19 04:24:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 252 transitions. [2021-11-19 04:24:41,457 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 252 transitions. Word has length 35 [2021-11-19 04:24:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:24:41,458 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 252 transitions. [2021-11-19 04:24:41,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:24:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 252 transitions. [2021-11-19 04:24:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 04:24:41,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:24:41,459 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:24:41,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:24:41,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:24:41,677 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting list_addErr1REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:24:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:24:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1645490398, now seen corresponding path program 1 times [2021-11-19 04:24:41,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:24:41,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832248988] [2021-11-19 04:24:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:24:41,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:24:41,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:24:41,679 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:24:41,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:24:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:24:41,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 04:24:41,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:24:42,519 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:24:42,519 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 34 treesize of output 36 [2021-11-19 04:24:42,532 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:24:42,532 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 33 treesize of output 33 [2021-11-19 04:24:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:24:42,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:24:47,865 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 57 treesize of output 53 [2021-11-19 04:24:47,885 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 04:24:47,885 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 53 treesize of output 52 [2021-11-19 04:24:50,333 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 47 treesize of output 43 [2021-11-19 04:24:50,648 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:24:50,648 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 38 treesize of output 42 [2021-11-19 04:24:52,506 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:24:52,507 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 73 treesize of output 77 [2021-11-19 04:25:23,876 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 04:25:23,876 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 44 treesize of output 43 [2021-11-19 04:25:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:25:24,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:24,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832248988] [2021-11-19 04:25:24,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832248988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:25:24,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:25:24,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-19 04:25:24,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055607272] [2021-11-19 04:25:24,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:25:24,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 04:25:24,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:25:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 04:25:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=465, Unknown=1, NotChecked=0, Total=552 [2021-11-19 04:25:24,103 INFO L87 Difference]: Start difference. First operand 215 states and 252 transitions. Second operand has 24 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-19 04:25:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:25:25,878 INFO L93 Difference]: Finished difference Result 220 states and 256 transitions. [2021-11-19 04:25:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:25:25,878 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2021-11-19 04:25:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:25:25,880 INFO L225 Difference]: With dead ends: 220 [2021-11-19 04:25:25,880 INFO L226 Difference]: Without dead ends: 220 [2021-11-19 04:25:25,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=170, Invalid=759, Unknown=1, NotChecked=0, Total=930 [2021-11-19 04:25:25,881 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 362 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 723 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:25:25,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 677 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 339 Invalid, 0 Unknown, 723 Unchecked, 1.2s Time] [2021-11-19 04:25:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-19 04:25:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 181. [2021-11-19 04:25:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 140 states have internal predecessors, (147), 24 states have call successors, (24), 21 states have call predecessors, (24), 18 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-19 04:25:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2021-11-19 04:25:25,890 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 35 [2021-11-19 04:25:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:25:25,890 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2021-11-19 04:25:25,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-19 04:25:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2021-11-19 04:25:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 04:25:25,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:25:25,892 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:25:25,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:25:26,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:25:26,105 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __list_addErr0REQUIRES_VIOLATION === [list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION, __list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION (and 44 more)] === [2021-11-19 04:25:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:25:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1952450521, now seen corresponding path program 1 times [2021-11-19 04:25:26,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:25:26,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164356916] [2021-11-19 04:25:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:26,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:25:26,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:25:26,107 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:25:26,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:25:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 04:25:26,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:26,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:25:26,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 04:25:26,832 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-19 04:25:26,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-11-19 04:25:27,056 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 04:25:27,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 36 [2021-11-19 04:25:27,440 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 82 treesize of output 70 [2021-11-19 04:25:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:25:27,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:42,275 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_gl_insert_~node~0.base_38 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~0.base_38)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~0.base_38 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_38 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_38) gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))))) is different from false [2021-11-19 04:25:44,264 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 78001 treesize of output 77745 [2021-11-19 04:25:44,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:25:44,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164356916] [2021-11-19 04:25:44,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 04:25:44,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1425332808] [2021-11-19 04:25:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:44,585 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 04:25:44,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/cvc4 [2021-11-19 04:25:44,591 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 04:25:44,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 04:25:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:44,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-19 04:25:44,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:44,988 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 7 treesize of output 3 [2021-11-19 04:25:45,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:25:45,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 04:25:46,611 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-19 04:25:46,612 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 25 treesize of output 36 [2021-11-19 04:25:46,898 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 04:25:46,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 36 [2021-11-19 04:25:47,476 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 46 treesize of output 34 [2021-11-19 04:25:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:25:48,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:25:57,706 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 04:25:57,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 13737 treesize of output 13335 [2021-11-19 04:25:58,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 04:25:58,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820067854] [2021-11-19 04:25:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:25:58,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:25:58,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:25:58,289 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:25:58,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 04:25:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:25:58,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 04:25:58,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:25:58,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:25:58,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 04:25:58,751 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-19 04:25:58,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-11-19 04:25:59,006 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-19 04:25:59,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 36 [2021-11-19 04:25:59,133 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 82 treesize of output 70 [2021-11-19 04:25:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:25:59,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:26:12,738 WARN L838 $PredicateComparison]: unable to prove that (forall ((gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_gl_insert_~node~0.base_49 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~0.base_49)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~0.base_49 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_49 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~0.base_49) gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) gl_insert_~node~0.offset) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) (_ bv1 1))))) is different from false [2021-11-19 04:26:13,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 04:26:13,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:26:13,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-19 04:26:13,450 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-19 04:26:13,450 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-19 04:26:13,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION (47 of 48 remaining) [2021-11-19 04:26:13,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr0REQUIRES_VIOLATION (46 of 48 remaining) [2021-11-19 04:26:13,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr1REQUIRES_VIOLATION (45 of 48 remaining) [2021-11-19 04:26:13,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr0REQUIRES_VIOLATION (44 of 48 remaining) [2021-11-19 04:26:13,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr1REQUIRES_VIOLATION (43 of 48 remaining) [2021-11-19 04:26:13,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr2REQUIRES_VIOLATION (42 of 48 remaining) [2021-11-19 04:26:13,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr3REQUIRES_VIOLATION (41 of 48 remaining) [2021-11-19 04:26:13,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr0REQUIRES_VIOLATION (40 of 48 remaining) [2021-11-19 04:26:13,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr1REQUIRES_VIOLATION (39 of 48 remaining) [2021-11-19 04:26:13,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr0REQUIRES_VIOLATION (38 of 48 remaining) [2021-11-19 04:26:13,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr1REQUIRES_VIOLATION (37 of 48 remaining) [2021-11-19 04:26:13,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr2REQUIRES_VIOLATION (36 of 48 remaining) [2021-11-19 04:26:13,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr3REQUIRES_VIOLATION (35 of 48 remaining) [2021-11-19 04:26:13,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr4REQUIRES_VIOLATION (34 of 48 remaining) [2021-11-19 04:26:13,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr5REQUIRES_VIOLATION (33 of 48 remaining) [2021-11-19 04:26:13,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (32 of 48 remaining) [2021-11-19 04:26:13,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 48 remaining) [2021-11-19 04:26:13,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 48 remaining) [2021-11-19 04:26:13,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION (29 of 48 remaining) [2021-11-19 04:26:13,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION (28 of 48 remaining) [2021-11-19 04:26:13,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION (27 of 48 remaining) [2021-11-19 04:26:13,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION (26 of 48 remaining) [2021-11-19 04:26:13,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION (25 of 48 remaining) [2021-11-19 04:26:13,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION (24 of 48 remaining) [2021-11-19 04:26:13,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION (23 of 48 remaining) [2021-11-19 04:26:13,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (22 of 48 remaining) [2021-11-19 04:26:13,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATION (21 of 48 remaining) [2021-11-19 04:26:13,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATION (20 of 48 remaining) [2021-11-19 04:26:13,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr0REQUIRES_VIOLATION (19 of 48 remaining) [2021-11-19 04:26:13,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr1REQUIRES_VIOLATION (18 of 48 remaining) [2021-11-19 04:26:13,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr2REQUIRES_VIOLATION (17 of 48 remaining) [2021-11-19 04:26:13,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr3REQUIRES_VIOLATION (16 of 48 remaining) [2021-11-19 04:26:13,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr4REQUIRES_VIOLATION (15 of 48 remaining) [2021-11-19 04:26:13,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr5REQUIRES_VIOLATION (14 of 48 remaining) [2021-11-19 04:26:13,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr6REQUIRES_VIOLATION (13 of 48 remaining) [2021-11-19 04:26:13,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_delErr7REQUIRES_VIOLATION (12 of 48 remaining) [2021-11-19 04:26:13,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr0REQUIRES_VIOLATION (11 of 48 remaining) [2021-11-19 04:26:13,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr1REQUIRES_VIOLATION (10 of 48 remaining) [2021-11-19 04:26:13,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr2REQUIRES_VIOLATION (9 of 48 remaining) [2021-11-19 04:26:13,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr3REQUIRES_VIOLATION (8 of 48 remaining) [2021-11-19 04:26:13,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATION (7 of 48 remaining) [2021-11-19 04:26:13,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATION (6 of 48 remaining) [2021-11-19 04:26:13,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr0REQUIRES_VIOLATION (5 of 48 remaining) [2021-11-19 04:26:13,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr1REQUIRES_VIOLATION (4 of 48 remaining) [2021-11-19 04:26:13,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr2REQUIRES_VIOLATION (3 of 48 remaining) [2021-11-19 04:26:13,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr3REQUIRES_VIOLATION (2 of 48 remaining) [2021-11-19 04:26:13,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr4REQUIRES_VIOLATION (1 of 48 remaining) [2021-11-19 04:26:13,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_seek_maxErr5REQUIRES_VIOLATION (0 of 48 remaining) [2021-11-19 04:26:13,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:26:13,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:26:13,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 04:26:14,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:26:14,076 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:26:14,079 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:26:14,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:26:14 BoogieIcfgContainer [2021-11-19 04:26:14,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:26:14,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:26:14,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:26:14,091 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:26:14,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:22:27" (3/4) ... [2021-11-19 04:26:14,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 04:26:14,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:26:14,094 INFO L158 Benchmark]: Toolchain (without parser) took 228866.39ms. Allocated memory was 69.2MB in the beginning and 111.1MB in the end (delta: 41.9MB). Free memory was 47.1MB in the beginning and 65.0MB in the end (delta: -17.9MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2021-11-19 04:26:14,094 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 50.4MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:26:14,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 741.21ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 38.4MB in the end (delta: 8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:26:14,095 INFO L158 Benchmark]: Boogie Preprocessor took 109.84ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 34.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 04:26:14,095 INFO L158 Benchmark]: RCFGBuilder took 1039.80ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 34.8MB in the beginning and 67.3MB in the end (delta: -32.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2021-11-19 04:26:14,096 INFO L158 Benchmark]: TraceAbstraction took 226965.00ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 66.8MB in the beginning and 65.0MB in the end (delta: 1.8MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2021-11-19 04:26:14,096 INFO L158 Benchmark]: Witness Printer took 3.14ms. Allocated memory is still 111.1MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:26:14,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 50.4MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 741.21ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 38.4MB in the end (delta: 8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.84ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 34.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1039.80ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 34.8MB in the beginning and 67.3MB in the end (delta: -32.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * TraceAbstraction took 226965.00ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 66.8MB in the beginning and 65.0MB in the end (delta: 1.8MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. * Witness Printer took 3.14ms. Allocated memory is still 111.1MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L564] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L620] CALL gl_read() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new [L536] new->next = next [L537] new->prev = prev [L538] prev->next = new [L547] RET __list_add(new, head, head->next) [L571] RET list_add(&node->linkage, &gl_list) [L576] RET gl_insert(__VERIFIER_nondet_int()) [L578] COND TRUE __VERIFIER_nondet_int() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 181 locations, 48 error locations. Started 1 CEGAR loops. OverallTime: 226.9s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1547 SdHoareTripleChecker+Valid, 11.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1531 mSDsluCounter, 9939 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2002 IncrementalHoareTripleChecker+Unchecked, 7737 mSDsCounter, 273 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3315 IncrementalHoareTripleChecker+Invalid, 5590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 273 mSolverCounterUnsat, 2202 mSDtfsCounter, 3315 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 624 GetRequests, 423 SyntacticMatches, 39 SemanticMatches, 162 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 118.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=12, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 91 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 175.3s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 603 ConstructedInterpolants, 108 QuantifiedInterpolants, 7614 SizeOfPredicates, 158 NumberOfNonLiveVariables, 2272 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 31 InterpolantComputations, 26 PerfectInterpolantSequences, 28/38 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 04:26:14,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f169da5e-8c57-4a10-9321-fbfb3b2dac7b/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN