./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.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_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/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_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/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_359328c3-9cef-412e-8b51-0a7a0d56c362/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 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:19:45,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:19:45,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:19:45,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:19:45,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:19:45,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:19:45,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:19:45,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:19:45,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:19:45,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:19:45,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:19:45,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:19:45,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:19:45,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:19:45,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:19:45,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:19:45,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:19:45,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:19:45,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:19:45,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:19:45,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:19:45,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:19:45,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:19:45,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:19:45,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:19:45,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:19:45,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:19:45,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:19:45,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:19:45,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:19:45,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:19:45,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:19:45,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:19:45,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:19:45,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:19:45,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:19:45,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:19:45,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:19:45,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:19:45,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:19:45,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:19:45,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:19:45,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:19:45,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:19:45,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:19:45,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:19:45,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:19:45,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:19:45,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:19:45,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:19:45,910 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:19:45,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:19:45,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:19:45,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:19:45,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:19:45,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:19:45,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:19:45,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:19:45,914 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:19:45,914 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:19:45,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:19:45,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:19:45,915 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:19:45,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:19:45,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:19:45,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:19:45,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:19:45,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:19:45,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:19:45,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:19:45,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:19:45,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:19:45,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:19:45,921 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_359328c3-9cef-412e-8b51-0a7a0d56c362/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-19 04:19:46,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:19:46,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:19:46,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:19:46,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:19:46,356 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:19:46,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-19 04:19:46,435 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/0ebe649c3/b406c968a6c4445d9b950dec3fbbe807/FLAGd98f76177 [2021-11-19 04:19:47,226 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:19:47,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-19 04:19:47,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/0ebe649c3/b406c968a6c4445d9b950dec3fbbe807/FLAGd98f76177 [2021-11-19 04:19:47,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/0ebe649c3/b406c968a6c4445d9b950dec3fbbe807 [2021-11-19 04:19:47,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:19:47,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:19:47,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:19:47,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:19:47,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:19:47,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:47" (1/1) ... [2021-11-19 04:19:47,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343d1dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:47, skipping insertion in model container [2021-11-19 04:19:47,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:47" (1/1) ... [2021-11-19 04:19:47,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:19:47,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:19:48,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-19 04:19:48,194 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:19:48,207 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 04:19:48,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14c382b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:48, skipping insertion in model container [2021-11-19 04:19:48,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:19:48,219 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 04:19:48,222 INFO L158 Benchmark]: Toolchain (without parser) took 830.41ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 44.1MB in the beginning and 83.6MB in the end (delta: -39.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 04:19:48,223 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory was 63.1MB in the beginning and 63.0MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:19:48,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 826.94ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 43.9MB in the beginning and 83.6MB in the end (delta: -39.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 04:19:48,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory was 63.1MB in the beginning and 63.0MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 826.94ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 43.9MB in the beginning and 83.6MB in the end (delta: -39.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/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_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/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_359328c3-9cef-412e-8b51-0a7a0d56c362/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 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:19:51,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:19:51,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:19:51,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:19:51,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:19:51,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:19:51,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:19:51,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:19:51,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:19:51,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:19:51,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:19:51,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:19:51,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:19:51,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:19:51,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:19:51,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:19:51,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:19:51,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:19:51,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:19:51,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:19:51,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:19:51,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:19:51,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:19:51,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:19:51,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:19:51,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:19:51,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:19:51,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:19:51,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:19:51,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:19:51,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:19:51,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:19:51,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:19:51,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:19:51,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:19:51,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:19:51,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:19:51,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:19:51,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:19:51,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:19:51,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:19:51,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 04:19:51,329 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:19:51,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:19:51,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:19:51,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:19:51,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:19:51,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:19:51,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:19:51,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:19:51,333 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:19:51,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:19:51,334 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:19:51,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:19:51,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:19:51,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:19:51,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:19:51,335 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:19:51,336 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:19:51,336 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:19:51,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:19:51,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:19:51,337 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:19:51,337 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:19:51,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:19:51,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:19:51,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:19:51,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:19:51,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:19:51,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:19:51,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:19:51,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:19:51,340 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:19:51,340 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:19:51,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:19:51,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:19:51,341 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_359328c3-9cef-412e-8b51-0a7a0d56c362/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-19 04:19:51,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:19:51,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:19:51,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:19:51,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:19:51,868 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:19:51,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-19 04:19:51,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/a5f48f2d0/8636c811373043099770712f3aef2e80/FLAG29ab817a1 [2021-11-19 04:19:52,868 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:19:52,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-19 04:19:52,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/a5f48f2d0/8636c811373043099770712f3aef2e80/FLAG29ab817a1 [2021-11-19 04:19:52,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/data/a5f48f2d0/8636c811373043099770712f3aef2e80 [2021-11-19 04:19:52,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:19:52,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:19:53,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:19:53,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:19:53,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:19:53,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:52" (1/1) ... [2021-11-19 04:19:53,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794243ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:53, skipping insertion in model container [2021-11-19 04:19:53,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:52" (1/1) ... [2021-11-19 04:19:53,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:19:53,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:19:53,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-19 04:19:53,900 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:19:53,930 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 04:19:53,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:19:53,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-19 04:19:54,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:19:54,079 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:19:54,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-19 04:19:54,232 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:19:54,303 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:19:54,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54 WrapperNode [2021-11-19 04:19:54,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:19:54,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:19:54,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:19:54,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:19:54,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:19:54,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:19:54,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:19:54,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:19:54,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (1/1) ... [2021-11-19 04:19:54,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:19:54,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:19:54,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:19:54,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:19:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:19:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:19:54,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:19:54,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 04:19:54,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 04:19:54,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 04:19:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 04:19:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 04:19:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:19:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:19:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 04:19:54,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:19:54,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:19:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 04:19:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 04:19:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 04:19:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 04:19:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 04:19:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 04:19:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 04:19:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 04:19:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 04:19:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 04:19:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 04:19:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 04:19:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 04:19:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 04:19:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 04:19:54,743 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 04:19:54,743 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 04:19:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 04:19:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 04:19:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 04:19:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 04:19:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 04:19:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 04:19:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 04:19:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 04:19:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 04:19:54,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 04:19:54,748 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 04:19:54,748 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 04:19:54,748 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 04:19:54,748 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 04:19:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 04:19:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 04:19:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 04:19:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 04:19:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 04:19:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 04:19:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 04:19:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 04:19:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 04:19:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 04:19:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 04:19:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 04:19:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 04:19:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 04:19:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 04:19:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 04:19:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 04:19:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 04:19:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 04:19:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 04:19:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:19:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:19:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:19:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:19:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:19:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:19:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:19:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:19:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:19:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:19:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:19:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:19:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:19:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:19:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:19:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:19:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 04:19:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 04:19:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 04:19:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 04:19:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 04:19:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:19:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:19:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:19:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:19:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:19:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:19:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:19:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:19:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:19:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:19:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:19:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:19:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:19:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:19:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:19:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:19:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:19:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:19:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:19:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:19:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:19:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:19:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:19:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:19:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:19:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:19:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:19:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:19:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:19:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:19:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:19:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:19:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:19:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:19:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:19:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:19:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:19:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:19:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:19:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:19:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:19:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:19:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:19:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:19:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:19:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:19:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:19:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 04:19:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:19:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:19:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:19:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:19:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:19:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:19:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:19:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:19:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:19:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:19:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:19:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:19:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:19:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:19:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:19:55,432 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:19:55,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:19:55,661 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 04:20:02,375 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:20:02,400 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:20:02,400 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-19 04:20:02,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:02 BoogieIcfgContainer [2021-11-19 04:20:02,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:20:02,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:20:02,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:20:02,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:20:02,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:19:52" (1/3) ... [2021-11-19 04:20:02,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6134781e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:02, skipping insertion in model container [2021-11-19 04:20:02,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:54" (2/3) ... [2021-11-19 04:20:02,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6134781e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:02, skipping insertion in model container [2021-11-19 04:20:02,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:02" (3/3) ... [2021-11-19 04:20:02,416 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-1.i [2021-11-19 04:20:02,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:20:02,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-19 04:20:02,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:20:02,491 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 04:20:02,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-19 04:20:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 04:20:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:20:02,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:02,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:02,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1382358025, now seen corresponding path program 1 times [2021-11-19 04:20:02,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:02,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595162739] [2021-11-19 04:20:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:02,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:02,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:02,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:02,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:20:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:02,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:20:02,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:02,953 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 04:20:02,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:03,012 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 04:20:03,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:03,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595162739] [2021-11-19 04:20:03,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595162739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:03,014 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:03,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:20:03,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742526116] [2021-11-19 04:20:03,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:03,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:20:03,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:03,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:20:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:20:03,104 INFO L87 Difference]: Start difference. First operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:03,212 INFO L93 Difference]: Finished difference Result 1264 states and 1338 transitions. [2021-11-19 04:20:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:20:03,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:20:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:03,253 INFO L225 Difference]: With dead ends: 1264 [2021-11-19 04:20:03,253 INFO L226 Difference]: Without dead ends: 1261 [2021-11-19 04:20:03,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:20:03,260 INFO L933 BasicCegarLoop]: 1338 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, 1338 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 04:20:03,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:20:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-11-19 04:20:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2021-11-19 04:20:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 606 states have (on average 2.1419141914191417) internal successors, (1298), 1247 states have internal predecessors, (1298), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:20:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1335 transitions. [2021-11-19 04:20:03,416 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1335 transitions. Word has length 9 [2021-11-19 04:20:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:03,417 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 1335 transitions. [2021-11-19 04:20:03,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1335 transitions. [2021-11-19 04:20:03,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:20:03,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:03,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:03,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:03,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:03,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:03,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357963, now seen corresponding path program 1 times [2021-11-19 04:20:03,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:03,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143340895] [2021-11-19 04:20:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:03,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:03,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:03,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:03,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:20:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:03,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:20:03,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:03,930 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 04:20:03,945 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 04:20:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:03,981 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 04:20:03,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:03,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143340895] [2021-11-19 04:20:03,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143340895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:03,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:03,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:20:03,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996125037] [2021-11-19 04:20:03,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:03,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:20:03,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:20:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:20:03,987 INFO L87 Difference]: Start difference. First operand 1261 states and 1335 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:07,162 INFO L93 Difference]: Finished difference Result 1298 states and 1385 transitions. [2021-11-19 04:20:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:20:07,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:20:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:07,174 INFO L225 Difference]: With dead ends: 1298 [2021-11-19 04:20:07,175 INFO L226 Difference]: Without dead ends: 1298 [2021-11-19 04:20:07,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:20:07,177 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1137 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:07,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 758 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 04:20:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-19 04:20:07,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1244. [2021-11-19 04:20:07,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 682 states have (on average 1.964809384164223) internal successors, (1340), 1230 states have internal predecessors, (1340), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:20:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1377 transitions. [2021-11-19 04:20:07,233 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1377 transitions. Word has length 9 [2021-11-19 04:20:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:07,233 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1377 transitions. [2021-11-19 04:20:07,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1377 transitions. [2021-11-19 04:20:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:20:07,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:07,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:07,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:07,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:07,450 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357962, now seen corresponding path program 1 times [2021-11-19 04:20:07,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:07,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941897623] [2021-11-19 04:20:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:07,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:07,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:07,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:07,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:20:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:07,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:20:07,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:07,742 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 04:20:07,776 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 04:20:07,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:20:07,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:07,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941897623] [2021-11-19 04:20:07,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941897623] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:07,907 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:07,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:20:07,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047846730] [2021-11-19 04:20:07,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:07,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:20:07,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:20:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:07,910 INFO L87 Difference]: Start difference. First operand 1244 states and 1377 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:14,671 INFO L93 Difference]: Finished difference Result 1598 states and 1752 transitions. [2021-11-19 04:20:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:20:14,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:20:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:14,682 INFO L225 Difference]: With dead ends: 1598 [2021-11-19 04:20:14,682 INFO L226 Difference]: Without dead ends: 1598 [2021-11-19 04:20:14,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:14,684 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 1097 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:14,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1441 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-19 04:20:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-11-19 04:20:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1400. [2021-11-19 04:20:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 848 states have (on average 1.9410377358490567) internal successors, (1646), 1386 states have internal predecessors, (1646), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:20:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1683 transitions. [2021-11-19 04:20:14,736 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1683 transitions. Word has length 9 [2021-11-19 04:20:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:14,737 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 1683 transitions. [2021-11-19 04:20:14,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1683 transitions. [2021-11-19 04:20:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:20:14,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:14,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:14,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:14,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:14,951 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 98263510, now seen corresponding path program 1 times [2021-11-19 04:20:14,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:14,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042793930] [2021-11-19 04:20:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:14,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:14,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:14,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:15,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:20:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:15,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:20:15,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:15,249 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 04:20:15,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:15,289 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 04:20:15,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:15,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042793930] [2021-11-19 04:20:15,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042793930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:15,298 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:15,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:20:15,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506415566] [2021-11-19 04:20:15,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:15,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:20:15,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:20:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:15,305 INFO L87 Difference]: Start difference. First operand 1400 states and 1683 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:15,513 INFO L93 Difference]: Finished difference Result 2745 states and 3291 transitions. [2021-11-19 04:20:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:20:15,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 04:20:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:15,565 INFO L225 Difference]: With dead ends: 2745 [2021-11-19 04:20:15,565 INFO L226 Difference]: Without dead ends: 2745 [2021-11-19 04:20:15,566 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 04:20:15,571 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 3153 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:15,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3165 Valid, 2732 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:20:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-19 04:20:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2216. [2021-11-19 04:20:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1664 states have (on average 1.9483173076923077) internal successors, (3242), 2196 states have internal predecessors, (3242), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:20:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3291 transitions. [2021-11-19 04:20:15,670 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3291 transitions. Word has length 10 [2021-11-19 04:20:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:15,671 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 3291 transitions. [2021-11-19 04:20:15,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3291 transitions. [2021-11-19 04:20:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:20:15,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:15,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:15,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:15,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:15,886 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:15,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:15,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1364426047, now seen corresponding path program 1 times [2021-11-19 04:20:15,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:15,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810049857] [2021-11-19 04:20:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:15,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:15,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:15,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:15,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:20:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:16,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:20:16,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:16,221 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 04:20:16,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:16,274 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 04:20:16,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:16,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810049857] [2021-11-19 04:20:16,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810049857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:16,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:16,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:20:16,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118568954] [2021-11-19 04:20:16,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:16,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:20:16,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:16,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:20:16,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:16,278 INFO L87 Difference]: Start difference. First operand 2216 states and 3291 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:16,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:16,342 INFO L93 Difference]: Finished difference Result 2156 states and 3205 transitions. [2021-11-19 04:20:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:20:16,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 04:20:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:16,363 INFO L225 Difference]: With dead ends: 2156 [2021-11-19 04:20:16,363 INFO L226 Difference]: Without dead ends: 2156 [2021-11-19 04:20:16,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:16,365 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 1115 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:16,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1122 Valid, 1328 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:20:16,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-11-19 04:20:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2156. [2021-11-19 04:20:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1628 states have (on average 1.9385749385749387) internal successors, (3156), 2136 states have internal predecessors, (3156), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:20:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3205 transitions. [2021-11-19 04:20:16,450 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3205 transitions. Word has length 15 [2021-11-19 04:20:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:16,451 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3205 transitions. [2021-11-19 04:20:16,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3205 transitions. [2021-11-19 04:20:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 04:20:16,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:16,453 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 04:20:16,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:16,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:16,671 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1248405209, now seen corresponding path program 1 times [2021-11-19 04:20:16,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:16,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393169184] [2021-11-19 04:20:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:16,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:16,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:16,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:20:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:16,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:20:16,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:16,999 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 04:20:16,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:20:17,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:17,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393169184] [2021-11-19 04:20:17,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393169184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:17,065 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:17,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:20:17,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2676623] [2021-11-19 04:20:17,066 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:17,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:20:17,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:17,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:20:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:20:17,068 INFO L87 Difference]: Start difference. First operand 2156 states and 3205 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:17,196 INFO L93 Difference]: Finished difference Result 2128 states and 3149 transitions. [2021-11-19 04:20:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:20:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 04:20:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:17,220 INFO L225 Difference]: With dead ends: 2128 [2021-11-19 04:20:17,220 INFO L226 Difference]: Without dead ends: 2128 [2021-11-19 04:20:17,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:20:17,223 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 1086 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:17,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 2416 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:20:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-19 04:20:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2126. [2021-11-19 04:20:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1612 states have (on average 1.9218362282878412) internal successors, (3098), 2106 states have internal predecessors, (3098), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:20:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3147 transitions. [2021-11-19 04:20:17,306 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3147 transitions. Word has length 17 [2021-11-19 04:20:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:17,307 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 3147 transitions. [2021-11-19 04:20:17,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3147 transitions. [2021-11-19 04:20:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:20:17,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:17,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:17,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:17,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:17,524 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711161, now seen corresponding path program 1 times [2021-11-19 04:20:17,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:17,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216577775] [2021-11-19 04:20:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:17,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:17,527 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:17,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:20:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:17,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:20:17,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:17,817 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 04:20:17,942 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 04:20:17,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:18,086 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 04:20:18,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:18,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216577775] [2021-11-19 04:20:18,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216577775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:18,087 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:18,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:20:18,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076150219] [2021-11-19 04:20:18,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:18,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:20:18,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:20:18,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:18,090 INFO L87 Difference]: Start difference. First operand 2126 states and 3147 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:21,944 INFO L93 Difference]: Finished difference Result 2754 states and 3940 transitions. [2021-11-19 04:20:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:20:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:20:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:21,965 INFO L225 Difference]: With dead ends: 2754 [2021-11-19 04:20:21,965 INFO L226 Difference]: Without dead ends: 2754 [2021-11-19 04:20:21,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:20:21,967 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 2328 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:21,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2332 Valid, 1078 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 04:20:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-19 04:20:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2122. [2021-11-19 04:20:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1612 states have (on average 1.9168734491315136) internal successors, (3090), 2102 states have internal predecessors, (3090), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:20:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3139 transitions. [2021-11-19 04:20:22,045 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3139 transitions. Word has length 31 [2021-11-19 04:20:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:22,046 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3139 transitions. [2021-11-19 04:20:22,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3139 transitions. [2021-11-19 04:20:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:20:22,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:22,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:22,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:22,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:22,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711160, now seen corresponding path program 1 times [2021-11-19 04:20:22,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:22,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856931525] [2021-11-19 04:20:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:22,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:22,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:22,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:22,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:20:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:22,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:20:22,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:22,572 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 04:20:22,868 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 04:20:22,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:23,372 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 04:20:23,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:23,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856931525] [2021-11-19 04:20:23,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856931525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:23,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:23,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:20:23,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543940400] [2021-11-19 04:20:23,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:23,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:20:23,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:20:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:20:23,375 INFO L87 Difference]: Start difference. First operand 2122 states and 3139 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:34,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:34,265 INFO L93 Difference]: Finished difference Result 2375 states and 3288 transitions. [2021-11-19 04:20:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:20:34,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:20:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:34,282 INFO L225 Difference]: With dead ends: 2375 [2021-11-19 04:20:34,282 INFO L226 Difference]: Without dead ends: 2375 [2021-11-19 04:20:34,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:20:34,283 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 1422 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:34,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 2375 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2021-11-19 04:20:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-19 04:20:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2118. [2021-11-19 04:20:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1612 states have (on average 1.911910669975186) internal successors, (3082), 2098 states have internal predecessors, (3082), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:20:34,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3131 transitions. [2021-11-19 04:20:34,348 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3131 transitions. Word has length 31 [2021-11-19 04:20:34,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:34,348 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 3131 transitions. [2021-11-19 04:20:34,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:34,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3131 transitions. [2021-11-19 04:20:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 04:20:34,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:34,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:34,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 04:20:34,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:34,573 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash -189672101, now seen corresponding path program 1 times [2021-11-19 04:20:34,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:34,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274250857] [2021-11-19 04:20:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:34,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:34,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:34,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:34,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:20:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:34,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:20:34,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:34,995 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 04:20:34,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:35,134 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 04:20:35,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:35,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274250857] [2021-11-19 04:20:35,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274250857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:35,135 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:35,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:20:35,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244562936] [2021-11-19 04:20:35,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:35,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:20:35,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:20:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:35,137 INFO L87 Difference]: Start difference. First operand 2118 states and 3131 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:35,210 INFO L93 Difference]: Finished difference Result 2106 states and 3111 transitions. [2021-11-19 04:20:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:20:35,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-19 04:20:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:35,226 INFO L225 Difference]: With dead ends: 2106 [2021-11-19 04:20:35,226 INFO L226 Difference]: Without dead ends: 2106 [2021-11-19 04:20:35,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:20:35,227 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 1062 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:35,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 2322 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:20:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-11-19 04:20:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-11-19 04:20:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1600 states have (on average 1.91375) internal successors, (3062), 2086 states have internal predecessors, (3062), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:20:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3111 transitions. [2021-11-19 04:20:35,283 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3111 transitions. Word has length 46 [2021-11-19 04:20:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:35,284 INFO L470 AbstractCegarLoop]: Abstraction has 2106 states and 3111 transitions. [2021-11-19 04:20:35,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3111 transitions. [2021-11-19 04:20:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 04:20:35,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:35,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:35,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:35,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:35,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:35,500 INFO L85 PathProgramCache]: Analyzing trace with hash 568275343, now seen corresponding path program 1 times [2021-11-19 04:20:35,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:35,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969227380] [2021-11-19 04:20:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:35,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:35,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:35,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:35,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:20:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:35,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:20:35,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:20:36,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:20:36,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:36,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969227380] [2021-11-19 04:20:36,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969227380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:36,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:36,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:20:36,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123983959] [2021-11-19 04:20:36,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:36,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:20:36,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:20:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:20:36,671 INFO L87 Difference]: Start difference. First operand 2106 states and 3111 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:36,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:36,787 INFO L93 Difference]: Finished difference Result 1922 states and 2756 transitions. [2021-11-19 04:20:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:20:36,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-19 04:20:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:36,803 INFO L225 Difference]: With dead ends: 1922 [2021-11-19 04:20:36,803 INFO L226 Difference]: Without dead ends: 1922 [2021-11-19 04:20:36,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:20:36,804 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 67 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:36,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2187 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:20:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-19 04:20:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1922. [2021-11-19 04:20:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1416 states have (on average 1.911723163841808) internal successors, (2707), 1902 states have internal predecessors, (2707), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:20:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2756 transitions. [2021-11-19 04:20:36,855 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2756 transitions. Word has length 54 [2021-11-19 04:20:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:36,858 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 2756 transitions. [2021-11-19 04:20:36,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2756 transitions. [2021-11-19 04:20:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 04:20:36,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:36,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:36,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:37,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:37,075 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1377713038, now seen corresponding path program 1 times [2021-11-19 04:20:37,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:37,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975620582] [2021-11-19 04:20:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:37,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:37,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:37,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:20:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:37,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:20:37,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:37,502 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 04:20:37,510 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 04:20:38,262 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:20:38,263 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 25 treesize of output 27 [2021-11-19 04:20:38,271 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:20:38,272 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 24 treesize of output 20 [2021-11-19 04:20:38,322 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 04:20:38,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:43,398 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 04:20:43,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:43,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975620582] [2021-11-19 04:20:43,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975620582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:43,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:43,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:20:43,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273225875] [2021-11-19 04:20:43,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:43,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:20:43,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:20:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 04:20:43,401 INFO L87 Difference]: Start difference. First operand 1922 states and 2756 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:52,429 INFO L93 Difference]: Finished difference Result 2628 states and 3396 transitions. [2021-11-19 04:20:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:20:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-19 04:20:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:52,445 INFO L225 Difference]: With dead ends: 2628 [2021-11-19 04:20:52,445 INFO L226 Difference]: Without dead ends: 2628 [2021-11-19 04:20:52,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 04:20:52,446 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 2596 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1698 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:52,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2603 Valid, 1579 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1598 Invalid, 0 Unknown, 1698 Unchecked, 8.9s Time] [2021-11-19 04:20:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2021-11-19 04:20:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2017. [2021-11-19 04:20:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1543 states have (on average 1.863901490602722) internal successors, (2876), 1994 states have internal predecessors, (2876), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:20:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2931 transitions. [2021-11-19 04:20:52,508 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2931 transitions. Word has length 57 [2021-11-19 04:20:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:52,509 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 2931 transitions. [2021-11-19 04:20:52,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2931 transitions. [2021-11-19 04:20:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 04:20:52,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:52,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:52,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:52,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:52,728 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:52,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:52,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1132291757, now seen corresponding path program 1 times [2021-11-19 04:20:52,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:52,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810447130] [2021-11-19 04:20:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:52,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:52,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:52,732 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:52,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:20:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:20:52,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:53,252 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 04:20:53,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:53,345 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 04:20:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:20:53,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:53,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810447130] [2021-11-19 04:20:53,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810447130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:53,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:53,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:20:53,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905983847] [2021-11-19 04:20:53,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:53,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:20:53,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:20:53,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:20:53,684 INFO L87 Difference]: Start difference. First operand 2017 states and 2931 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:56,371 INFO L93 Difference]: Finished difference Result 2015 states and 2927 transitions. [2021-11-19 04:20:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:20:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-11-19 04:20:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:56,384 INFO L225 Difference]: With dead ends: 2015 [2021-11-19 04:20:56,384 INFO L226 Difference]: Without dead ends: 2015 [2021-11-19 04:20:56,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:20:56,385 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1040 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:56,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 723 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 04:20:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-11-19 04:20:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2015. [2021-11-19 04:20:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1543 states have (on average 1.8613091380427738) internal successors, (2872), 1992 states have internal predecessors, (2872), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:20:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2927 transitions. [2021-11-19 04:20:56,434 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2927 transitions. Word has length 59 [2021-11-19 04:20:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:56,434 INFO L470 AbstractCegarLoop]: Abstraction has 2015 states and 2927 transitions. [2021-11-19 04:20:56,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2927 transitions. [2021-11-19 04:20:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 04:20:56,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:56,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:56,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:56,650 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:20:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash 569746658, now seen corresponding path program 1 times [2021-11-19 04:20:56,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:56,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455051188] [2021-11-19 04:20:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:56,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:56,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:56,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:56,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:20:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:56,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:20:56,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:57,132 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 04:20:57,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 04:20:57,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 04:20:57,220 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 04:20:57,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:20:57,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:57,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455051188] [2021-11-19 04:20:57,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455051188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:57,394 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:20:57,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611791970] [2021-11-19 04:20:57,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:57,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:20:57,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:20:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:20:57,396 INFO L87 Difference]: Start difference. First operand 2015 states and 2927 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:01,600 INFO L93 Difference]: Finished difference Result 2014 states and 2925 transitions. [2021-11-19 04:21:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:21:01,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 04:21:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:01,611 INFO L225 Difference]: With dead ends: 2014 [2021-11-19 04:21:01,611 INFO L226 Difference]: Without dead ends: 2014 [2021-11-19 04:21:01,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:21:01,613 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 4 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:01,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2829 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-19 04:21:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-11-19 04:21:01,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2014. [2021-11-19 04:21:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1543 states have (on average 1.8600129617627998) internal successors, (2870), 1991 states have internal predecessors, (2870), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:21:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2925 transitions. [2021-11-19 04:21:01,667 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2925 transitions. Word has length 62 [2021-11-19 04:21:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:01,668 INFO L470 AbstractCegarLoop]: Abstraction has 2014 states and 2925 transitions. [2021-11-19 04:21:01,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2925 transitions. [2021-11-19 04:21:01,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 04:21:01,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:01,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:01,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:01,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:01,888 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:21:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash 569746659, now seen corresponding path program 1 times [2021-11-19 04:21:01,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:01,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515675821] [2021-11-19 04:21:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:01,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:01,891 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:01,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:21:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:02,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:21:02,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:02,353 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 04:21:02,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 04:21:02,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 04:21:02,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 04:21:02,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 04:21:02,507 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 04:21:02,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:02,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:02,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515675821] [2021-11-19 04:21:02,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515675821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:02,864 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:02,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 04:21:02,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017322421] [2021-11-19 04:21:02,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:02,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:21:02,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:02,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:21:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:21:02,866 INFO L87 Difference]: Start difference. First operand 2014 states and 2925 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:15,204 INFO L93 Difference]: Finished difference Result 2013 states and 2923 transitions. [2021-11-19 04:21:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:21:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 04:21:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:15,214 INFO L225 Difference]: With dead ends: 2013 [2021-11-19 04:21:15,214 INFO L226 Difference]: Without dead ends: 2013 [2021-11-19 04:21:15,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:21:15,215 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 3 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:15,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3291 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-11-19 04:21:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-11-19 04:21:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2013. [2021-11-19 04:21:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1541 states have (on average 1.8611291369240752) internal successors, (2868), 1990 states have internal predecessors, (2868), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:21:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2923 transitions. [2021-11-19 04:21:15,264 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2923 transitions. Word has length 62 [2021-11-19 04:21:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:15,265 INFO L470 AbstractCegarLoop]: Abstraction has 2013 states and 2923 transitions. [2021-11-19 04:21:15,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2923 transitions. [2021-11-19 04:21:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 04:21:15,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:15,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:15,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:15,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:15,479 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:21:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2036280663, now seen corresponding path program 1 times [2021-11-19 04:21:15,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:15,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921603616] [2021-11-19 04:21:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:15,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:15,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:15,483 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:15,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:21:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:15,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:21:15,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:15,952 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 04:21:15,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:16,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:16,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921603616] [2021-11-19 04:21:16,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921603616] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:16,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:16,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:21:16,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31894460] [2021-11-19 04:21:16,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:16,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:21:16,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:16,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:21:16,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:21:16,122 INFO L87 Difference]: Start difference. First operand 2013 states and 2923 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:16,277 INFO L93 Difference]: Finished difference Result 2023 states and 2940 transitions. [2021-11-19 04:21:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:21:16,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-19 04:21:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:16,285 INFO L225 Difference]: With dead ends: 2023 [2021-11-19 04:21:16,285 INFO L226 Difference]: Without dead ends: 2023 [2021-11-19 04:21:16,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:21:16,287 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 9 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4385 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:16,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4385 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:21:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2021-11-19 04:21:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2023. [2021-11-19 04:21:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1549 states have (on average 1.8592640413169788) internal successors, (2880), 1999 states have internal predecessors, (2880), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:21:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2940 transitions. [2021-11-19 04:21:16,346 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2940 transitions. Word has length 70 [2021-11-19 04:21:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:16,348 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 2940 transitions. [2021-11-19 04:21:16,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2940 transitions. [2021-11-19 04:21:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 04:21:16,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:16,359 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:16,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:16,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:16,560 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:21:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:16,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1343773079, now seen corresponding path program 1 times [2021-11-19 04:21:16,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:16,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550424085] [2021-11-19 04:21:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:16,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:16,563 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:16,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:21:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:16,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:21:16,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:17,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:17,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:17,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550424085] [2021-11-19 04:21:17,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550424085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:21:17,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:21:17,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 04:21:17,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610046891] [2021-11-19 04:21:17,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:21:17,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:21:17,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:21:17,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:21:17,304 INFO L87 Difference]: Start difference. First operand 2023 states and 2940 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:17,858 INFO L93 Difference]: Finished difference Result 2037 states and 2966 transitions. [2021-11-19 04:21:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:21:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-19 04:21:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:17,866 INFO L225 Difference]: With dead ends: 2037 [2021-11-19 04:21:17,866 INFO L226 Difference]: Without dead ends: 2033 [2021-11-19 04:21:17,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:21:17,868 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 24 mSDsluCounter, 6577 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7680 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:17,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 7680 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:21:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2021-11-19 04:21:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2029. [2021-11-19 04:21:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1555 states have (on average 1.8572347266881029) internal successors, (2888), 2005 states have internal predecessors, (2888), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:21:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2948 transitions. [2021-11-19 04:21:17,952 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2948 transitions. Word has length 72 [2021-11-19 04:21:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:17,953 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2948 transitions. [2021-11-19 04:21:17,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2948 transitions. [2021-11-19 04:21:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 04:21:17,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:17,961 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:17,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:18,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:18,178 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:21:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1627356649, now seen corresponding path program 2 times [2021-11-19 04:21:18,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:18,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418474329] [2021-11-19 04:21:18,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:21:18,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:18,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:18,180 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:18,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 04:21:18,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:21:18,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:21:18,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:21:18,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:18,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:19,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:19,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418474329] [2021-11-19 04:21:19,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418474329] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:21:19,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:21:19,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-19 04:21:19,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107736184] [2021-11-19 04:21:19,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:21:19,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 04:21:19,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 04:21:19,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:21:19,554 INFO L87 Difference]: Start difference. First operand 2029 states and 2948 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:21,375 INFO L93 Difference]: Finished difference Result 2057 states and 3010 transitions. [2021-11-19 04:21:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 04:21:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-19 04:21:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:21,383 INFO L225 Difference]: With dead ends: 2057 [2021-11-19 04:21:21,383 INFO L226 Difference]: Without dead ends: 2053 [2021-11-19 04:21:21,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 04:21:21,385 INFO L933 BasicCegarLoop]: 1107 mSDtfsCounter, 82 mSDsluCounter, 7718 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 8825 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:21,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 8825 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 04:21:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2021-11-19 04:21:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2041. [2021-11-19 04:21:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1567 states have (on average 1.853222718570517) internal successors, (2904), 2017 states have internal predecessors, (2904), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:21:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2964 transitions. [2021-11-19 04:21:21,433 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2964 transitions. Word has length 76 [2021-11-19 04:21:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:21,434 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2964 transitions. [2021-11-19 04:21:21,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2964 transitions. [2021-11-19 04:21:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 04:21:21,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:21,436 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:21,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:21,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:21,651 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:21:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash -790106903, now seen corresponding path program 3 times [2021-11-19 04:21:21,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:21,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527316553] [2021-11-19 04:21:21,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:21:21,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:21,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:21,653 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:21,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 04:21:22,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 04:21:22,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:21:22,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 04:21:22,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:23,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:25,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:25,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527316553] [2021-11-19 04:21:25,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527316553] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:21:25,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:21:25,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-19 04:21:25,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699904399] [2021-11-19 04:21:25,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:21:25,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 04:21:25,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 04:21:25,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 04:21:25,124 INFO L87 Difference]: Start difference. First operand 2041 states and 2964 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:35,767 INFO L93 Difference]: Finished difference Result 2097 states and 3128 transitions. [2021-11-19 04:21:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-19 04:21:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-19 04:21:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:35,773 INFO L225 Difference]: With dead ends: 2097 [2021-11-19 04:21:35,773 INFO L226 Difference]: Without dead ends: 2091 [2021-11-19 04:21:35,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 04:21:35,776 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 231 mSDsluCounter, 17711 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 18824 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:35,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 18824 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 04:21:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2021-11-19 04:21:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2065. [2021-11-19 04:21:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1591 states have (on average 1.8447517284726587) internal successors, (2935), 2041 states have internal predecessors, (2935), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:21:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2995 transitions. [2021-11-19 04:21:35,827 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2995 transitions. Word has length 84 [2021-11-19 04:21:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:35,827 INFO L470 AbstractCegarLoop]: Abstraction has 2065 states and 2995 transitions. [2021-11-19 04:21:35,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:21:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2995 transitions. [2021-11-19 04:21:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 04:21:35,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:35,830 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:35,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:36,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:36,044 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:21:36,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash -870593815, now seen corresponding path program 4 times [2021-11-19 04:21:36,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:36,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599325992] [2021-11-19 04:21:36,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 04:21:36,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:36,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:36,046 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:36,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 04:21:36,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 04:21:36,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:21:36,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 04:21:36,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:37,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:42,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:42,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599325992] [2021-11-19 04:21:42,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599325992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:21:42,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:21:42,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-19 04:21:42,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983577793] [2021-11-19 04:21:42,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:21:42,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 04:21:42,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 04:21:42,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 04:21:42,039 INFO L87 Difference]: Start difference. First operand 2065 states and 2995 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:00,610 INFO L93 Difference]: Finished difference Result 2157 states and 3231 transitions. [2021-11-19 04:22:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-19 04:22:00,611 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-19 04:22:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:00,618 INFO L225 Difference]: With dead ends: 2157 [2021-11-19 04:22:00,618 INFO L226 Difference]: Without dead ends: 2153 [2021-11-19 04:22:00,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-19 04:22:00,628 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 302 mSDsluCounter, 40349 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 41479 SdHoareTripleChecker+Invalid, 5875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:00,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 41479 Invalid, 5875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [516 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2021-11-19 04:22:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-19 04:22:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2095. [2021-11-19 04:22:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 1621 states have (on average 1.838988278840222) internal successors, (2981), 2071 states have internal predecessors, (2981), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:22:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 3041 transitions. [2021-11-19 04:22:00,710 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 3041 transitions. Word has length 100 [2021-11-19 04:22:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:00,711 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 3041 transitions. [2021-11-19 04:22:00,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 3041 transitions. [2021-11-19 04:22:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 04:22:00,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:00,713 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:00,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:00,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:00,931 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-19 04:22:00,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash -22317783, now seen corresponding path program 5 times [2021-11-19 04:22:00,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:00,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016586289] [2021-11-19 04:22:00,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 04:22:00,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:00,935 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:00,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359328c3-9cef-412e-8b51-0a7a0d56c362/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 04:22:02,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-19 04:22:02,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:22:02,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-19 04:22:02,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:02,247 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 04:22:02,459 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 04:22:02,459 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 04:22:02,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 04:22:02,879 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 40 treesize of output 28