./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y --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 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:51:51,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:51:51,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:51:51,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:51:51,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:51:51,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:51:51,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:51:51,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:51:51,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:51:51,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:51:51,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:51:51,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:51:51,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:51:51,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:51:51,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:51:51,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:51:51,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:51:51,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:51:51,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:51:51,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:51:51,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:51:51,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:51:51,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:51:51,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:51:51,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:51:51,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:51:51,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:51:51,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:51:51,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:51:51,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:51:51,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:51:51,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:51:51,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:51:51,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:51:51,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:51:51,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:51:51,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:51:51,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:51:51,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:51:51,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:51:51,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:51:51,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:51:51,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:51:51,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:51:51,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:51:51,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:51:51,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:51:51,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:51:51,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:51:51,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:51:51,681 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:51:51,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:51:51,683 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:51:51,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:51:51,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:51:51,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:51:51,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:51:51,684 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:51:51,685 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:51:51,685 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:51:51,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:51:51,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:51:51,685 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:51:51,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:51:51,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:51:51,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:51:51,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:51:51,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:51,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:51:51,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:51:51,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:51:51,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:51:51,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:51:51,690 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_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2021-11-13 18:51:52,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:51:52,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:51:52,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:51:52,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:51:52,045 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:51:52,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-13 18:51:52,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/c8154e0f2/8e8536656d40440782e7ec9e18eb2e93/FLAG12bb2c626 [2021-11-13 18:51:52,774 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:51:52,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-13 18:51:52,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/c8154e0f2/8e8536656d40440782e7ec9e18eb2e93/FLAG12bb2c626 [2021-11-13 18:51:52,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/c8154e0f2/8e8536656d40440782e7ec9e18eb2e93 [2021-11-13 18:51:52,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:51:52,974 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:51:52,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:52,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:51:52,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:51:52,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:52" (1/1) ... [2021-11-13 18:51:52,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb48727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:52, skipping insertion in model container [2021-11-13 18:51:52,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:52" (1/1) ... [2021-11-13 18:51:52,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:51:53,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:51:53,452 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-13 18:51:53,557 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-13 18:51:53,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:53,583 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) [2021-11-13 18:51:53,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3624b415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:53, skipping insertion in model container [2021-11-13 18:51:53,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:53,584 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:51:53,587 INFO L158 Benchmark]: Toolchain (without parser) took 611.65ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 49.2MB in the beginning and 80.5MB in the end (delta: -31.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:51:53,588 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 88.1MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:51:53,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 608.56ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 49.0MB in the beginning and 80.5MB in the end (delta: -31.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:51:53,591 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 88.1MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 608.56ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 49.0MB in the beginning and 80.5MB in the end (delta: -31.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y --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 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:51:55,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:51:55,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:51:56,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:51:56,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:51:56,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:51:56,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:51:56,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:51:56,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:51:56,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:51:56,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:51:56,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:51:56,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:51:56,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:51:56,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:51:56,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:51:56,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:51:56,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:51:56,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:51:56,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:51:56,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:51:56,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:51:56,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:51:56,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:51:56,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:51:56,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:51:56,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:51:56,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:51:56,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:51:56,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:51:56,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:51:56,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:51:56,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:51:56,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:51:56,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:51:56,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:51:56,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:51:56,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:51:56,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:51:56,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:51:56,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:51:56,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:51:56,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:51:56,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:51:56,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:51:56,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:51:56,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:51:56,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:51:56,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:51:56,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:51:56,101 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:51:56,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:51:56,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:51:56,103 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:51:56,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:51:56,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:51:56,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:51:56,104 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:51:56,104 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:51:56,104 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:51:56,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:51:56,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:51:56,105 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:51:56,105 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:51:56,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:51:56,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:51:56,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:51:56,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:51:56,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:51:56,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:56,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:51:56,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:51:56,107 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:51:56,108 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:51:56,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:51:56,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:51:56,109 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_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2021-11-13 18:51:56,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:51:56,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:51:56,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:51:56,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:51:56,506 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:51:56,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-13 18:51:56,591 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/6b9428ad5/72bb9b1a3d774611b04b15158e33ade3/FLAG4b6960f7e [2021-11-13 18:51:57,231 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:51:57,232 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-13 18:51:57,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/6b9428ad5/72bb9b1a3d774611b04b15158e33ade3/FLAG4b6960f7e [2021-11-13 18:51:57,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/data/6b9428ad5/72bb9b1a3d774611b04b15158e33ade3 [2021-11-13 18:51:57,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:51:57,455 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:51:57,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:57,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:51:57,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:51:57,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:57" (1/1) ... [2021-11-13 18:51:57,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fc2860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:57, skipping insertion in model container [2021-11-13 18:51:57,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:57" (1/1) ... [2021-11-13 18:51:57,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:51:57,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:51:58,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-13 18:51:58,268 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-13 18:51:58,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:58,295 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:51:58,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:51:58,329 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-13 18:51:58,423 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-13 18:51:58,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:58,436 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:51:58,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-13 18:51:58,595 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-13 18:51:58,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:58,649 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:51:58,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58 WrapperNode [2021-11-13 18:51:58,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:58,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:51:58,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:51:58,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:51:58,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:51:58,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:51:58,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:51:58,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:51:58,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (1/1) ... [2021-11-13 18:51:58,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:58,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:58,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:51:58,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:51:58,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:51:58,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:51:58,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:51:58,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:51:58,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:51:58,997 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:51:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:51:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:51:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:51:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:51:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:51:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:51:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:51:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:51:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:51:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:51:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:51:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:51:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:51:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:51:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:51:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:51:59,002 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:51:59,003 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:51:59,004 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:51:59,004 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:51:59,004 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:51:59,004 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:51:59,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:51:59,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:51:59,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:51:59,005 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:51:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:51:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:51:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:51:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:51:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:51:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:51:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:51:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:51:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:51:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:51:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:51:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:51:59,012 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:51:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:51:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:51:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:51:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:51:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:51:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:51:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:51:59,532 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:52:04,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:52:04,526 INFO L299 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-13 18:52:04,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:52:04 BoogieIcfgContainer [2021-11-13 18:52:04,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:52:04,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:52:04,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:52:04,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:52:04,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:51:57" (1/3) ... [2021-11-13 18:52:04,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393c13ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:52:04, skipping insertion in model container [2021-11-13 18:52:04,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:58" (2/3) ... [2021-11-13 18:52:04,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393c13ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:52:04, skipping insertion in model container [2021-11-13 18:52:04,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:52:04" (3/3) ... [2021-11-13 18:52:04,539 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2021-11-13 18:52:04,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:52:04,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-13 18:52:04,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:52:04,598 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 [2021-11-13 18:52:04,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-13 18:52:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:52:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:52:04,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:04,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:04,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -292335135, now seen corresponding path program 1 times [2021-11-13 18:52:04,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:04,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615172280] [2021-11-13 18:52:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:04,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:04,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:04,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:52:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:04,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:52:04,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:05,107 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 [2021-11-13 18:52:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:05,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:05,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:05,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615172280] [2021-11-13 18:52:05,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615172280] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:05,169 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:05,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:52:05,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337066830] [2021-11-13 18:52:05,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:52:05,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:52:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:52:05,223 INFO L87 Difference]: Start difference. First operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:07,374 INFO L93 Difference]: Finished difference Result 1105 states and 1191 transitions. [2021-11-13 18:52:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:52:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 18:52:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:07,400 INFO L225 Difference]: With dead ends: 1105 [2021-11-13 18:52:07,401 INFO L226 Difference]: Without dead ends: 1102 [2021-11-13 18:52:07,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:52:07,407 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 971 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1661.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.15ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2027.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:07,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 835 Invalid, 565 Unknown, 0 Unchecked, 22.15ms Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 2027.94ms Time] [2021-11-13 18:52:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-13 18:52:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1090. [2021-11-13 18:52:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 544 states have (on average 2.088235294117647) internal successors, (1136), 1077 states have internal predecessors, (1136), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:52:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1181 transitions. [2021-11-13 18:52:07,519 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1181 transitions. Word has length 7 [2021-11-13 18:52:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:07,519 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1181 transitions. [2021-11-13 18:52:07,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1181 transitions. [2021-11-13 18:52:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:52:07,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:07,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:07,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:07,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash -292335134, now seen corresponding path program 1 times [2021-11-13 18:52:07,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:07,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679700101] [2021-11-13 18:52:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:07,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:07,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:07,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:07,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:52:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:07,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:07,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:07,987 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 [2021-11-13 18:52:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:08,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:08,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:08,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679700101] [2021-11-13 18:52:08,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679700101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:08,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:08,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:52:08,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887681537] [2021-11-13 18:52:08,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:08,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:52:08,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:52:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:08,079 INFO L87 Difference]: Start difference. First operand 1090 states and 1181 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:13,104 INFO L93 Difference]: Finished difference Result 1566 states and 1691 transitions. [2021-11-13 18:52:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 18:52:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:13,113 INFO L225 Difference]: With dead ends: 1566 [2021-11-13 18:52:13,114 INFO L226 Difference]: Without dead ends: 1566 [2021-11-13 18:52:13,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:13,116 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 1557 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4290.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.61ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4921.61ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:13,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 1520 Invalid, 905 Unknown, 0 Unchecked, 22.61ms Time], IncrementalHoareTripleChecker [19 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 4921.61ms Time] [2021-11-13 18:52:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-11-13 18:52:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1129. [2021-11-13 18:52:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 591 states have (on average 2.0676818950930627) internal successors, (1222), 1115 states have internal predecessors, (1222), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:52:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1269 transitions. [2021-11-13 18:52:13,162 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1269 transitions. Word has length 7 [2021-11-13 18:52:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:13,163 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1269 transitions. [2021-11-13 18:52:13,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1269 transitions. [2021-11-13 18:52:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:52:13,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:13,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:13,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:13,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:13,376 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash -184131353, now seen corresponding path program 1 times [2021-11-13 18:52:13,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:13,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54830374] [2021-11-13 18:52:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:13,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:13,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:13,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:13,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:52:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:13,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:13,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:13,600 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 [2021-11-13 18:52:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:13,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:13,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:13,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54830374] [2021-11-13 18:52:13,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54830374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:13,781 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:13,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:52:13,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321216118] [2021-11-13 18:52:13,781 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:13,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:52:13,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:52:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:13,783 INFO L87 Difference]: Start difference. First operand 1129 states and 1269 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:19,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:19,396 INFO L93 Difference]: Finished difference Result 1565 states and 1690 transitions. [2021-11-13 18:52:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:19,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 18:52:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:19,407 INFO L225 Difference]: With dead ends: 1565 [2021-11-13 18:52:19,408 INFO L226 Difference]: Without dead ends: 1565 [2021-11-13 18:52:19,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:19,409 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 752 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4870.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.42ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5523.77ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:19,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2174 Invalid, 1275 Unknown, 0 Unchecked, 15.42ms Time], IncrementalHoareTripleChecker [16 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 5523.77ms Time] [2021-11-13 18:52:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-13 18:52:19,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1327. [2021-11-13 18:52:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 798 states have (on average 2.0426065162907268) internal successors, (1630), 1312 states have internal predecessors, (1630), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1679 transitions. [2021-11-13 18:52:19,462 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1679 transitions. Word has length 12 [2021-11-13 18:52:19,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:19,463 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1679 transitions. [2021-11-13 18:52:19,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1679 transitions. [2021-11-13 18:52:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:52:19,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:19,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:19,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:19,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:19,680 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash -184131354, now seen corresponding path program 1 times [2021-11-13 18:52:19,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:19,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813928469] [2021-11-13 18:52:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:19,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:19,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:19,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:19,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:52:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:19,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:52:19,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:19,890 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 [2021-11-13 18:52:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:19,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:19,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:19,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813928469] [2021-11-13 18:52:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813928469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:19,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:19,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:52:19,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295794988] [2021-11-13 18:52:19,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:19,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:52:19,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:52:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:52:19,944 INFO L87 Difference]: Start difference. First operand 1327 states and 1679 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:22,202 INFO L93 Difference]: Finished difference Result 1656 states and 2033 transitions. [2021-11-13 18:52:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:52:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 18:52:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:22,213 INFO L225 Difference]: With dead ends: 1656 [2021-11-13 18:52:22,213 INFO L226 Difference]: Without dead ends: 1656 [2021-11-13 18:52:22,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:52:22,215 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 980 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1858.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.67ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2204.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:22,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1308 Invalid, 760 Unknown, 0 Unchecked, 8.67ms Time], IncrementalHoareTripleChecker [54 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2204.22ms Time] [2021-11-13 18:52:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-13 18:52:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1280. [2021-11-13 18:52:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9774436090225564) internal successors, (1578), 1265 states have internal predecessors, (1578), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1627 transitions. [2021-11-13 18:52:22,256 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1627 transitions. Word has length 12 [2021-11-13 18:52:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:22,257 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1627 transitions. [2021-11-13 18:52:22,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1627 transitions. [2021-11-13 18:52:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 18:52:22,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:22,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:22,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:22,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:22,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:22,471 INFO L85 PathProgramCache]: Analyzing trace with hash -42398436, now seen corresponding path program 1 times [2021-11-13 18:52:22,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:22,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716365483] [2021-11-13 18:52:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:22,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:22,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:22,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:52:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:22,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:22,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:22,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:52:22,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:52:22,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:52:22,753 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:52:22,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 18:52:22,809 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:52:22,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 18:52:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:22,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:22,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:22,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716365483] [2021-11-13 18:52:22,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716365483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:22,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:22,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:52:22,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534291112] [2021-11-13 18:52:22,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:22,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:52:22,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:52:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:52:22,904 INFO L87 Difference]: Start difference. First operand 1280 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-13 18:52:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:24,966 INFO L93 Difference]: Finished difference Result 1790 states and 2346 transitions. [2021-11-13 18:52:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:24,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 14 [2021-11-13 18:52:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:24,977 INFO L225 Difference]: With dead ends: 1790 [2021-11-13 18:52:24,977 INFO L226 Difference]: Without dead ends: 1790 [2021-11-13 18:52:24,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:52:24,978 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 356 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1739.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.23ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2002.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:24,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3995 Invalid, 415 Unknown, 0 Unchecked, 9.23ms Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 2002.19ms Time] [2021-11-13 18:52:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-13 18:52:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1280. [2021-11-13 18:52:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9761904761904763) internal successors, (1577), 1265 states have internal predecessors, (1577), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1626 transitions. [2021-11-13 18:52:25,054 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1626 transitions. Word has length 14 [2021-11-13 18:52:25,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:25,054 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1626 transitions. [2021-11-13 18:52:25,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-13 18:52:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1626 transitions. [2021-11-13 18:52:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 18:52:25,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:25,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:25,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:25,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:25,256 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:25,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:25,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1725470958, now seen corresponding path program 1 times [2021-11-13 18:52:25,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:25,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670573617] [2021-11-13 18:52:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:25,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:25,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:25,258 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:25,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:52:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:52:25,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:25,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:25,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:25,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670573617] [2021-11-13 18:52:25,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670573617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:25,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:25,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:52:25,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671778149] [2021-11-13 18:52:25,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:25,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:52:25,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:52:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:25,581 INFO L87 Difference]: Start difference. First operand 1280 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:25,625 INFO L93 Difference]: Finished difference Result 1247 states and 1592 transitions. [2021-11-13 18:52:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:52:25,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-13 18:52:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:25,633 INFO L225 Difference]: With dead ends: 1247 [2021-11-13 18:52:25,633 INFO L226 Difference]: Without dead ends: 1247 [2021-11-13 18:52:25,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:25,635 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1932 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.57ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:25,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1937 Valid, 1155 Invalid, 17 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 26.57ms Time] [2021-11-13 18:52:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-13 18:52:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1238. [2021-11-13 18:52:25,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 780 states have (on average 1.9666666666666666) internal successors, (1534), 1223 states have internal predecessors, (1534), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1583 transitions. [2021-11-13 18:52:25,669 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1583 transitions. Word has length 22 [2021-11-13 18:52:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:25,670 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1583 transitions. [2021-11-13 18:52:25,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1583 transitions. [2021-11-13 18:52:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:52:25,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:25,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:25,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:25,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:25,888 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash -320213556, now seen corresponding path program 1 times [2021-11-13 18:52:25,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:25,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884966412] [2021-11-13 18:52:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:25,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:25,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:25,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:52:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:26,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:26,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:26,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:26,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:26,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884966412] [2021-11-13 18:52:26,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884966412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:26,205 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:26,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:52:26,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012268839] [2021-11-13 18:52:26,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:26,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:52:26,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:52:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:52:26,207 INFO L87 Difference]: Start difference. First operand 1238 states and 1583 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:26,323 INFO L93 Difference]: Finished difference Result 1226 states and 1564 transitions. [2021-11-13 18:52:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 18:52:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:26,331 INFO L225 Difference]: With dead ends: 1226 [2021-11-13 18:52:26,331 INFO L226 Difference]: Without dead ends: 1226 [2021-11-13 18:52:26,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:52:26,333 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1864 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.10ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:26,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1869 Valid, 2117 Invalid, 79 Unknown, 0 Unchecked, 8.10ms Time], IncrementalHoareTripleChecker [47 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 81.52ms Time] [2021-11-13 18:52:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-11-13 18:52:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1216. [2021-11-13 18:52:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 772 states have (on average 1.9494818652849741) internal successors, (1505), 1201 states have internal predecessors, (1505), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1554 transitions. [2021-11-13 18:52:26,369 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1554 transitions. Word has length 24 [2021-11-13 18:52:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:26,369 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1554 transitions. [2021-11-13 18:52:26,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1554 transitions. [2021-11-13 18:52:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:52:26,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:26,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:26,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:26,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:26,587 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 44817114, now seen corresponding path program 1 times [2021-11-13 18:52:26,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:26,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478650109] [2021-11-13 18:52:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:26,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:26,590 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:52:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:26,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:26,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:26,843 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 [2021-11-13 18:52:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:26,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:27,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:27,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478650109] [2021-11-13 18:52:27,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478650109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:27,137 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:27,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:52:27,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055036337] [2021-11-13 18:52:27,137 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:27,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:52:27,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:52:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:27,138 INFO L87 Difference]: Start difference. First operand 1216 states and 1554 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:29,320 INFO L93 Difference]: Finished difference Result 1806 states and 2377 transitions. [2021-11-13 18:52:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:29,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-13 18:52:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:29,328 INFO L225 Difference]: With dead ends: 1806 [2021-11-13 18:52:29,328 INFO L226 Difference]: Without dead ends: 1806 [2021-11-13 18:52:29,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:52:29,329 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 2108 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1790.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.03ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2124.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:29,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2110 Valid, 1011 Invalid, 786 Unknown, 0 Unchecked, 12.03ms Time], IncrementalHoareTripleChecker [23 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 2124.37ms Time] [2021-11-13 18:52:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-13 18:52:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1212. [2021-11-13 18:52:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 772 states have (on average 1.944300518134715) internal successors, (1501), 1197 states have internal predecessors, (1501), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1550 transitions. [2021-11-13 18:52:29,366 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1550 transitions. Word has length 38 [2021-11-13 18:52:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:29,367 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1550 transitions. [2021-11-13 18:52:29,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1550 transitions. [2021-11-13 18:52:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:52:29,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:29,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:29,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:29,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:29,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:29,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash 44817115, now seen corresponding path program 1 times [2021-11-13 18:52:29,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:29,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670317443] [2021-11-13 18:52:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:29,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:29,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:29,586 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:29,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:52:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:29,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:52:29,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:29,819 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 [2021-11-13 18:52:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:30,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:30,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:30,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670317443] [2021-11-13 18:52:30,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670317443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:30,607 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:30,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:52:30,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700380176] [2021-11-13 18:52:30,607 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:30,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:52:30,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:52:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:52:30,611 INFO L87 Difference]: Start difference. First operand 1212 states and 1550 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:37,610 INFO L93 Difference]: Finished difference Result 1453 states and 1568 transitions. [2021-11-13 18:52:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:52:37,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-13 18:52:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:37,617 INFO L225 Difference]: With dead ends: 1453 [2021-11-13 18:52:37,617 INFO L226 Difference]: Without dead ends: 1453 [2021-11-13 18:52:37,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:52:37,618 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1848 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6080.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.92ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6866.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:37,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 2183 Invalid, 1590 Unknown, 0 Unchecked, 11.92ms Time], IncrementalHoareTripleChecker [17 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 6866.64ms Time] [2021-11-13 18:52:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-13 18:52:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1208. [2021-11-13 18:52:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 772 states have (on average 1.939119170984456) internal successors, (1497), 1193 states have internal predecessors, (1497), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1546 transitions. [2021-11-13 18:52:37,650 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1546 transitions. Word has length 38 [2021-11-13 18:52:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:37,650 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1546 transitions. [2021-11-13 18:52:37,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1546 transitions. [2021-11-13 18:52:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 18:52:37,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:37,652 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] [2021-11-13 18:52:37,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:37,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:37,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1384262345, now seen corresponding path program 1 times [2021-11-13 18:52:37,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:37,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867594516] [2021-11-13 18:52:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:37,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:37,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:37,868 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:37,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:52:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:38,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:38,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:38,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:38,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:38,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867594516] [2021-11-13 18:52:38,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867594516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:38,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:38,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:52:38,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597360871] [2021-11-13 18:52:38,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:38,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:52:38,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:52:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:38,427 INFO L87 Difference]: Start difference. First operand 1208 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-11-13 18:52:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:38,491 INFO L93 Difference]: Finished difference Result 1211 states and 1545 transitions. [2021-11-13 18:52:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 53 [2021-11-13 18:52:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:38,499 INFO L225 Difference]: With dead ends: 1211 [2021-11-13 18:52:38,499 INFO L226 Difference]: Without dead ends: 1211 [2021-11-13 18:52:38,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:52:38,500 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 913 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:38,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2095 Invalid, 41 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 39.93ms Time] [2021-11-13 18:52:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-13 18:52:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1202. [2021-11-13 18:52:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 766 states have (on average 1.941253263707572) internal successors, (1487), 1187 states have internal predecessors, (1487), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1536 transitions. [2021-11-13 18:52:38,527 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1536 transitions. Word has length 53 [2021-11-13 18:52:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:38,527 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1536 transitions. [2021-11-13 18:52:38,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-11-13 18:52:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1536 transitions. [2021-11-13 18:52:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:52:38,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:38,529 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] [2021-11-13 18:52:38,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:38,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:38,742 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1870144277, now seen corresponding path program 1 times [2021-11-13 18:52:38,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:38,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961376776] [2021-11-13 18:52:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:38,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:38,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:38,744 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:38,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:52:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:38,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:38,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:39,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:39,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:39,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961376776] [2021-11-13 18:52:39,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961376776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:39,786 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:39,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:52:39,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023031665] [2021-11-13 18:52:39,786 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:39,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:52:39,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:52:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:52:39,788 INFO L87 Difference]: Start difference. First operand 1202 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-13 18:52:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:40,076 INFO L93 Difference]: Finished difference Result 1742 states and 2271 transitions. [2021-11-13 18:52:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:52:40,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2021-11-13 18:52:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:40,084 INFO L225 Difference]: With dead ends: 1742 [2021-11-13 18:52:40,084 INFO L226 Difference]: Without dead ends: 1742 [2021-11-13 18:52:40,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:52:40,085 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 407 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 269.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:40,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2085 Invalid, 110 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 269.08ms Time] [2021-11-13 18:52:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-11-13 18:52:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1563. [2021-11-13 18:52:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1125 states have (on average 1.9244444444444444) internal successors, (2165), 1546 states have internal predecessors, (2165), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-13 18:52:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2218 transitions. [2021-11-13 18:52:40,151 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2218 transitions. Word has length 61 [2021-11-13 18:52:40,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:40,151 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2218 transitions. [2021-11-13 18:52:40,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-13 18:52:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2218 transitions. [2021-11-13 18:52:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:52:40,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:40,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:40,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:40,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:40,361 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:40,362 INFO L85 PathProgramCache]: Analyzing trace with hash 740278757, now seen corresponding path program 1 times [2021-11-13 18:52:40,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:40,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912920172] [2021-11-13 18:52:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:40,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:40,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:40,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:40,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:52:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:40,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:52:40,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:40,790 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 [2021-11-13 18:52:40,799 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 [2021-11-13 18:52:41,488 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:52:41,488 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 [2021-11-13 18:52:41,495 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:52:41,496 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 [2021-11-13 18:52:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:41,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:46,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:46,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912920172] [2021-11-13 18:52:46,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912920172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:46,512 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:46,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:52:46,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216559646] [2021-11-13 18:52:46,513 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:46,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:52:46,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:52:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:52:46,514 INFO L87 Difference]: Start difference. First operand 1563 states and 2218 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:52,493 INFO L93 Difference]: Finished difference Result 2168 states and 2916 transitions. [2021-11-13 18:52:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:52:52,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-13 18:52:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:52,506 INFO L225 Difference]: With dead ends: 2168 [2021-11-13 18:52:52,506 INFO L226 Difference]: Without dead ends: 2168 [2021-11-13 18:52:52,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 18:52:52,508 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1500 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5076.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.70ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 5886.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:52,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1625 Invalid, 2548 Unknown, 0 Unchecked, 14.70ms Time], IncrementalHoareTripleChecker [57 Valid, 1408 Invalid, 0 Unknown, 1083 Unchecked, 5886.62ms Time] [2021-11-13 18:52:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2021-11-13 18:52:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1175. [2021-11-13 18:52:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 773 states have (on average 1.8253557567917205) internal successors, (1411), 1160 states have internal predecessors, (1411), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1460 transitions. [2021-11-13 18:52:52,540 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1460 transitions. Word has length 64 [2021-11-13 18:52:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:52,541 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1460 transitions. [2021-11-13 18:52:52,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1460 transitions. [2021-11-13 18:52:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:52:52,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:52,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:52,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:52,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:52,757 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:52,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1556673562, now seen corresponding path program 1 times [2021-11-13 18:52:52,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:52,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21016871] [2021-11-13 18:52:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:52,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:52,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:52,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:52,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:52:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:53,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:53,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:53,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:53,349 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 [2021-11-13 18:52:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:53,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:53,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21016871] [2021-11-13 18:52:53,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21016871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:53,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:53,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:52:53,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740269746] [2021-11-13 18:52:53,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:53,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:52:53,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:53,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:52:53,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:52:53,676 INFO L87 Difference]: Start difference. First operand 1175 states and 1460 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:55,547 INFO L93 Difference]: Finished difference Result 1173 states and 1458 transitions. [2021-11-13 18:52:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:55,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-13 18:52:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:55,555 INFO L225 Difference]: With dead ends: 1173 [2021-11-13 18:52:55,555 INFO L226 Difference]: Without dead ends: 1173 [2021-11-13 18:52:55,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:52:55,556 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2550 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1562.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.30ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1841.73ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:55,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2555 Valid, 807 Invalid, 466 Unknown, 0 Unchecked, 6.30ms Time], IncrementalHoareTripleChecker [24 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 1841.73ms Time] [2021-11-13 18:52:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-13 18:52:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-13 18:52:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 773 states have (on average 1.8227684346701165) internal successors, (1409), 1158 states have internal predecessors, (1409), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1458 transitions. [2021-11-13 18:52:55,581 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1458 transitions. Word has length 66 [2021-11-13 18:52:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:55,581 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1458 transitions. [2021-11-13 18:52:55,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1458 transitions. [2021-11-13 18:52:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:52:55,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:55,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:55,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:55,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:55,798 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:55,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807298, now seen corresponding path program 1 times [2021-11-13 18:52:55,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:55,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576890] [2021-11-13 18:52:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:55,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:55,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:55,800 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:55,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:52:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:56,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:52:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:56,165 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 [2021-11-13 18:52:56,181 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 [2021-11-13 18:52:56,232 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 [2021-11-13 18:52:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:56,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:56,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:52:56,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576890] [2021-11-13 18:52:56,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:56,346 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:56,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:52:56,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267466628] [2021-11-13 18:52:56,346 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:56,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:52:56,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:52:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:52:56,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:52:56,347 INFO L87 Difference]: Start difference. First operand 1173 states and 1458 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:59,351 INFO L93 Difference]: Finished difference Result 1172 states and 1457 transitions. [2021-11-13 18:52:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:52:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-13 18:52:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:59,356 INFO L225 Difference]: With dead ends: 1172 [2021-11-13 18:52:59,356 INFO L226 Difference]: Without dead ends: 1172 [2021-11-13 18:52:59,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:52:59,357 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 4 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2530.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2941.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:59,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2568 Invalid, 1314 Unknown, 0 Unchecked, 7.62ms Time], IncrementalHoareTripleChecker [1 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 2941.87ms Time] [2021-11-13 18:52:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-13 18:52:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-13 18:52:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 773 states have (on average 1.8214747736093144) internal successors, (1408), 1157 states have internal predecessors, (1408), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:52:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1457 transitions. [2021-11-13 18:52:59,380 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1457 transitions. Word has length 69 [2021-11-13 18:52:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:59,381 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1457 transitions. [2021-11-13 18:52:59,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:52:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1457 transitions. [2021-11-13 18:52:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:52:59,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:59,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:59,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-13 18:52:59,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:52:59,597 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:52:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807297, now seen corresponding path program 1 times [2021-11-13 18:52:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:52:59,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985949458] [2021-11-13 18:52:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:59,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:52:59,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:52:59,600 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:52:59,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:52:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:59,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:52:59,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:59,965 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 [2021-11-13 18:52:59,988 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 [2021-11-13 18:53:00,006 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 [2021-11-13 18:53:00,075 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 [2021-11-13 18:53:00,078 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 [2021-11-13 18:53:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:00,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:53:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:00,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:53:00,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985949458] [2021-11-13 18:53:00,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985949458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:53:00,415 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:53:00,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:53:00,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757054854] [2021-11-13 18:53:00,416 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:53:00,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:53:00,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:53:00,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:53:00,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:53:00,417 INFO L87 Difference]: Start difference. First operand 1172 states and 1457 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:53:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:09,601 INFO L93 Difference]: Finished difference Result 1171 states and 1456 transitions. [2021-11-13 18:53:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:53:09,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-13 18:53:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:09,608 INFO L225 Difference]: With dead ends: 1171 [2021-11-13 18:53:09,608 INFO L226 Difference]: Without dead ends: 1171 [2021-11-13 18:53:09,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:53:09,609 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 3 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8083.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9070.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:09,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3683 Invalid, 2134 Unknown, 0 Unchecked, 13.47ms Time], IncrementalHoareTripleChecker [1 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 9070.17ms Time] [2021-11-13 18:53:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-13 18:53:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2021-11-13 18:53:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 772 states have (on average 1.822538860103627) internal successors, (1407), 1156 states have internal predecessors, (1407), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:53:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1456 transitions. [2021-11-13 18:53:09,630 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1456 transitions. Word has length 69 [2021-11-13 18:53:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:09,631 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1456 transitions. [2021-11-13 18:53:09,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:53:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1456 transitions. [2021-11-13 18:53:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 18:53:09,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:09,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:53:09,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:53:09,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:53:09,846 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:53:09,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:09,847 INFO L85 PathProgramCache]: Analyzing trace with hash 178416389, now seen corresponding path program 1 times [2021-11-13 18:53:09,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:53:09,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982136580] [2021-11-13 18:53:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:53:09,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:53:09,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:53:09,849 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:53:09,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:53:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:10,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:53:10,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:10,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:53:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:10,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:53:10,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982136580] [2021-11-13 18:53:10,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982136580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:53:10,407 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:53:10,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:53:10,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205329796] [2021-11-13 18:53:10,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:53:10,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:53:10,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:53:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:53:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:53:10,409 INFO L87 Difference]: Start difference. First operand 1171 states and 1456 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:10,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:10,508 INFO L93 Difference]: Finished difference Result 1181 states and 1469 transitions. [2021-11-13 18:53:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:53:10,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-13 18:53:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:10,516 INFO L225 Difference]: With dead ends: 1181 [2021-11-13 18:53:10,517 INFO L226 Difference]: Without dead ends: 1181 [2021-11-13 18:53:10,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:53:10,518 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 9 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.78ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:10,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2902 Invalid, 34 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 68.78ms Time] [2021-11-13 18:53:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-11-13 18:53:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2021-11-13 18:53:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 780 states have (on average 1.8192307692307692) internal successors, (1419), 1165 states have internal predecessors, (1419), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:53:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1469 transitions. [2021-11-13 18:53:10,546 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1469 transitions. Word has length 77 [2021-11-13 18:53:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:10,546 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1469 transitions. [2021-11-13 18:53:10,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1469 transitions. [2021-11-13 18:53:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 18:53:10,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:10,548 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:53:10,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:53:10,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:53:10,762 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:53:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1398946491, now seen corresponding path program 1 times [2021-11-13 18:53:10,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:53:10,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786946403] [2021-11-13 18:53:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:53:10,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:53:10,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:53:10,764 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:53:10,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:53:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:11,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:53:11,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:11,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:53:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:11,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:53:11,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786946403] [2021-11-13 18:53:11,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786946403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:53:11,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:53:11,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:53:11,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975798936] [2021-11-13 18:53:11,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:53:11,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:53:11,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:53:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:53:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:53:11,444 INFO L87 Difference]: Start difference. First operand 1181 states and 1469 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:11,876 INFO L93 Difference]: Finished difference Result 1195 states and 1487 transitions. [2021-11-13 18:53:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:53:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-13 18:53:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:11,884 INFO L225 Difference]: With dead ends: 1195 [2021-11-13 18:53:11,885 INFO L226 Difference]: Without dead ends: 1191 [2021-11-13 18:53:11,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:53:11,886 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 24 mSDsluCounter, 5795 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6766 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.44ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:11,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 6766 Invalid, 125 Unknown, 0 Unchecked, 4.44ms Time], IncrementalHoareTripleChecker [23 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 243.03ms Time] [2021-11-13 18:53:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-11-13 18:53:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1187. [2021-11-13 18:53:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 786 states have (on average 1.8155216284987277) internal successors, (1427), 1171 states have internal predecessors, (1427), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:53:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1477 transitions. [2021-11-13 18:53:11,913 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1477 transitions. Word has length 79 [2021-11-13 18:53:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:11,913 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1477 transitions. [2021-11-13 18:53:11,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1477 transitions. [2021-11-13 18:53:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 18:53:11,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:11,915 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:53:11,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:53:12,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:53:12,129 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:53:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash -512767547, now seen corresponding path program 2 times [2021-11-13 18:53:12,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:53:12,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929331260] [2021-11-13 18:53:12,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:53:12,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:53:12,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:53:12,132 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:53:12,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:53:12,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:53:12,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:53:12,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:53:12,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:12,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:53:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:13,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:53:13,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929331260] [2021-11-13 18:53:13,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929331260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:53:13,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:53:13,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:53:13,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185104743] [2021-11-13 18:53:13,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:53:13,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:53:13,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:53:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:53:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:53:13,350 INFO L87 Difference]: Start difference. First operand 1187 states and 1477 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:14,801 INFO L93 Difference]: Finished difference Result 1215 states and 1515 transitions. [2021-11-13 18:53:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:53:14,802 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-13 18:53:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:14,810 INFO L225 Difference]: With dead ends: 1215 [2021-11-13 18:53:14,810 INFO L226 Difference]: Without dead ends: 1211 [2021-11-13 18:53:14,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:53:14,812 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 84 mSDsluCounter, 6801 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 540.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 616.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:14,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 7776 Invalid, 375 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [67 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 616.32ms Time] [2021-11-13 18:53:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-13 18:53:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1199. [2021-11-13 18:53:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 798 states have (on average 1.8082706766917294) internal successors, (1443), 1183 states have internal predecessors, (1443), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:53:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1493 transitions. [2021-11-13 18:53:14,838 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1493 transitions. Word has length 83 [2021-11-13 18:53:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:14,839 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1493 transitions. [2021-11-13 18:53:14,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1493 transitions. [2021-11-13 18:53:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 18:53:14,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:14,840 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:53:14,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:53:15,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:53:15,057 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:53:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash 326177477, now seen corresponding path program 3 times [2021-11-13 18:53:15,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:53:15,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163650344] [2021-11-13 18:53:15,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:53:15,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:53:15,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:53:15,058 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:53:15,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:53:15,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:53:15,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:53:15,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:53:15,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:16,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:53:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:18,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:53:18,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163650344] [2021-11-13 18:53:18,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163650344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:53:18,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:53:18,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:53:18,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205034765] [2021-11-13 18:53:18,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:53:18,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:53:18,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:53:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:53:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:53:18,069 INFO L87 Difference]: Start difference. First operand 1199 states and 1493 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:26,637 INFO L93 Difference]: Finished difference Result 1255 states and 1577 transitions. [2021-11-13 18:53:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:53:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-13 18:53:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:26,646 INFO L225 Difference]: With dead ends: 1255 [2021-11-13 18:53:26,646 INFO L226 Difference]: Without dead ends: 1249 [2021-11-13 18:53:26,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:53:26,649 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 236 mSDsluCounter, 15632 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2176.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 16614 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.49ms SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2476.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:26,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 16614 Invalid, 1407 Unknown, 0 Unchecked, 18.49ms Time], IncrementalHoareTripleChecker [167 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 2476.38ms Time] [2021-11-13 18:53:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-13 18:53:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1223. [2021-11-13 18:53:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 822 states have (on average 1.7931873479318734) internal successors, (1474), 1207 states have internal predecessors, (1474), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:53:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1524 transitions. [2021-11-13 18:53:26,680 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1524 transitions. Word has length 91 [2021-11-13 18:53:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:26,680 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1524 transitions. [2021-11-13 18:53:26,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1524 transitions. [2021-11-13 18:53:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 18:53:26,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:26,682 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:53:26,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:53:26,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:53:26,905 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:53:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:26,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1201101627, now seen corresponding path program 4 times [2021-11-13 18:53:26,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:53:26,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709853011] [2021-11-13 18:53:26,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:53:26,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:53:26,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:53:26,908 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:53:26,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:53:27,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:53:27,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:53:27,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:53:27,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:28,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:53:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:53:32,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:53:32,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709853011] [2021-11-13 18:53:32,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709853011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:53:32,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:53:32,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:53:32,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668464614] [2021-11-13 18:53:32,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:53:32,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:53:32,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:53:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:53:32,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:53:32,737 INFO L87 Difference]: Start difference. First operand 1223 states and 1524 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:47,436 INFO L93 Difference]: Finished difference Result 1315 states and 1644 transitions. [2021-11-13 18:53:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:53:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-13 18:53:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:47,461 INFO L225 Difference]: With dead ends: 1315 [2021-11-13 18:53:47,461 INFO L226 Difference]: Without dead ends: 1311 [2021-11-13 18:53:47,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:53:47,469 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 278 mSDsluCounter, 31783 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6791.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 32781 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.19ms SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7743.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:47,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 32781 Invalid, 4552 Unknown, 0 Unchecked, 38.19ms Time], IncrementalHoareTripleChecker [511 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 7743.31ms Time] [2021-11-13 18:53:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-11-13 18:53:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1253. [2021-11-13 18:53:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 852 states have (on average 1.784037558685446) internal successors, (1520), 1237 states have internal predecessors, (1520), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-13 18:53:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1570 transitions. [2021-11-13 18:53:47,500 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1570 transitions. Word has length 107 [2021-11-13 18:53:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:47,500 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1570 transitions. [2021-11-13 18:53:47,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:53:47,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1570 transitions. [2021-11-13 18:53:47,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 18:53:47,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:47,502 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:53:47,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:53:47,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:53:47,719 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:53:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1844395141, now seen corresponding path program 5 times [2021-11-13 18:53:47,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:53:47,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499987403] [2021-11-13 18:53:47,721 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:53:47,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:53:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:53:47,722 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:53:47,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d63670-f413-4d4d-b374-9795098b49ce/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:53:48,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:53:48,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:53:48,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:53:48,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:48,923 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 [2021-11-13 18:53:49,142 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:53:49,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-13 18:53:49,188 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 [2021-11-13 18:53:49,361 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 36 treesize of output 24