./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF --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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:56,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:56,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:56,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:56,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:56,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:56,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:56,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:56,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:56,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:56,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:56,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:56,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:56,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:56,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:56,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:56,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:56,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:56,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:56,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:56,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:56,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:56,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:56,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:56,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:56,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:56,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:56,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:56,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:56,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:56,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:56,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:56,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:56,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:56,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:56,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:56,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:56,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:56,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:56,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:56,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:56,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:51:56,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:56,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:56,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:56,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:56,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:56,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:56,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:56,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:56,970 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:56,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:56,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:56,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:56,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:56,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:56,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:56,973 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:51:56,973 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:51:56,974 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:51:56,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:56,974 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:51:56,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:56,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:56,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:56,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:56,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:56,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:56,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:56,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:56,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:51:56,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:51:56,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:56,980 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_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2021-11-20 05:51:57,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:57,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:57,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:57,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:57,353 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:57,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-20 05:51:57,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/43c2cf28a/e9a72c2234a746adb5d5eb83994038dc/FLAGdb7095488 [2021-11-20 05:51:58,194 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:58,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-20 05:51:58,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/43c2cf28a/e9a72c2234a746adb5d5eb83994038dc/FLAGdb7095488 [2021-11-20 05:51:58,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/43c2cf28a/e9a72c2234a746adb5d5eb83994038dc [2021-11-20 05:51:58,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:58,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:58,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:58,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:58,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:58,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:58" (1/1) ... [2021-11-20 05:51:58,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc4f37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:58, skipping insertion in model container [2021-11-20 05:51:58,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:58" (1/1) ... [2021-11-20 05:51:58,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:58,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:58,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-20 05:51:59,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-20 05:51:59,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:59,169 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) [2021-11-20 05:51:59,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ad28c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:59, skipping insertion in model container [2021-11-20 05:51:59,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:59,170 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:51:59,173 INFO L158 Benchmark]: Toolchain (without parser) took 815.61ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 78.6MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:51:59,174 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory was 86.9MB in the beginning and 86.8MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:51:59,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 812.21ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 78.6MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:51:59,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory was 86.9MB in the beginning and 86.8MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 812.21ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 78.6MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF --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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:52:02,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:52:02,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:52:02,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:52:02,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:52:02,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:52:02,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:52:02,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:52:02,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:52:02,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:52:02,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:52:02,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:52:02,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:52:02,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:52:02,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:52:02,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:52:02,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:52:02,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:52:02,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:52:02,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:52:02,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:52:02,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:52:02,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:52:02,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:52:02,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:52:02,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:52:02,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:52:02,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:52:02,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:52:02,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:52:02,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:52:02,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:52:02,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:52:02,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:52:02,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:52:02,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:52:02,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:52:02,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:52:02,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:52:02,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:52:02,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:52:02,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:52:02,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:52:02,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:52:02,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:52:02,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:52:02,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:52:02,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:52:02,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:52:02,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:52:02,280 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:52:02,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:52:02,282 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:52:02,282 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:52:02,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:52:02,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:52:02,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:52:02,283 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:52:02,284 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:52:02,284 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:52:02,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:52:02,285 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:52:02,285 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:52:02,285 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:52:02,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:52:02,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:52:02,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:52:02,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:52:02,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:52:02,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:02,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:52:02,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:52:02,288 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:52:02,288 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:52:02,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:52:02,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:52:02,289 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_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2021-11-20 05:52:02,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:52:02,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:52:02,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:52:02,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:52:02,835 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:52:02,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-20 05:52:02,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/3938d7545/3439a2b593644168a50b45bc15d7c151/FLAGe4b8ff5b5 [2021-11-20 05:52:03,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:52:03,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-20 05:52:03,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/3938d7545/3439a2b593644168a50b45bc15d7c151/FLAGe4b8ff5b5 [2021-11-20 05:52:03,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/data/3938d7545/3439a2b593644168a50b45bc15d7c151 [2021-11-20 05:52:03,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:52:03,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:52:03,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:03,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:52:03,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:52:03,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:03" (1/1) ... [2021-11-20 05:52:03,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0919b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:03, skipping insertion in model container [2021-11-20 05:52:03,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:03" (1/1) ... [2021-11-20 05:52:03,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:52:04,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:52:04,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-20 05:52:04,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-20 05:52:04,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:04,844 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:52:04,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:52:04,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-20 05:52:04,991 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-20 05:52:04,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:05,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:52:05,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-20 05:52:05,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-20 05:52:05,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:05,252 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:52:05,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05 WrapperNode [2021-11-20 05:52:05,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:05,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:05,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:52:05,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:52:05,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,497 INFO L137 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1041 [2021-11-20 05:52:05,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:05,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:52:05,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:52:05,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:52:05,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:52:05,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:52:05,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:52:05,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:52:05,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (1/1) ... [2021-11-20 05:52:05,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:05,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:52:05,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:52:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 05:52:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:52:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:52:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:52:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 05:52:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 05:52:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:52:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:52:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:52:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:52:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 05:52:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:52:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:52:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:52:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:52:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:52:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:52:06,116 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:52:06,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:52:06,123 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 05:52:12,117 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:52:12,157 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:52:12,157 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-20 05:52:12,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:12 BoogieIcfgContainer [2021-11-20 05:52:12,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:52:12,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:52:12,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:52:12,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:52:12,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:52:03" (1/3) ... [2021-11-20 05:52:12,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c09e6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:12, skipping insertion in model container [2021-11-20 05:52:12,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:05" (2/3) ... [2021-11-20 05:52:12,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c09e6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:12, skipping insertion in model container [2021-11-20 05:52:12,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:12" (3/3) ... [2021-11-20 05:52:12,176 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-1.i [2021-11-20 05:52:12,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:52:12,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-20 05:52:12,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:52:12,263 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 [2021-11-20 05:52:12,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-20 05:52:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:52:12,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:12,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:52:12,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:12,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-20 05:52:12,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:12,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873060302] [2021-11-20 05:52:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:12,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:12,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:12,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:12,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:52:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:12,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:52:12,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:12,632 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 [2021-11-20 05:52:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:12,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:12,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873060302] [2021-11-20 05:52:12,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873060302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:12,677 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:12,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:52:12,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856321771] [2021-11-20 05:52:12,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:12,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:52:12,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:52:12,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:12,739 INFO L87 Difference]: Start difference. First operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:15,032 INFO L93 Difference]: Finished difference Result 1067 states and 1132 transitions. [2021-11-20 05:52:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:52:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:15,061 INFO L225 Difference]: With dead ends: 1067 [2021-11-20 05:52:15,062 INFO L226 Difference]: Without dead ends: 1065 [2021-11-20 05:52:15,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:15,068 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 990 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:15,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 705 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 05:52:15,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-20 05:52:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1057. [2021-11-20 05:52:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 530 states have (on average 2.0886792452830187) internal successors, (1107), 1051 states have internal predecessors, (1107), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1123 transitions. [2021-11-20 05:52:15,192 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1123 transitions. Word has length 3 [2021-11-20 05:52:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:15,192 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1123 transitions. [2021-11-20 05:52:15,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1123 transitions. [2021-11-20 05:52:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:52:15,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:15,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:52:15,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:15,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:15,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-20 05:52:15,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:15,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798666907] [2021-11-20 05:52:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:15,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:15,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:15,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:15,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:52:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:15,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:15,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:15,614 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 [2021-11-20 05:52:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:15,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:15,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:15,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798666907] [2021-11-20 05:52:15,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798666907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:15,698 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:15,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 05:52:15,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196400779] [2021-11-20 05:52:15,698 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:15,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:15,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:15,702 INFO L87 Difference]: Start difference. First operand 1057 states and 1123 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:21,333 INFO L93 Difference]: Finished difference Result 1542 states and 1651 transitions. [2021-11-20 05:52:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:21,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:52:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:21,346 INFO L225 Difference]: With dead ends: 1542 [2021-11-20 05:52:21,346 INFO L226 Difference]: Without dead ends: 1542 [2021-11-20 05:52:21,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:21,349 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 1167 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:21,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1592 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-20 05:52:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-11-20 05:52:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1092. [2021-11-20 05:52:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 574 states have (on average 2.0662020905923346) internal successors, (1186), 1086 states have internal predecessors, (1186), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1202 transitions. [2021-11-20 05:52:21,403 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1202 transitions. Word has length 3 [2021-11-20 05:52:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:21,404 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1202 transitions. [2021-11-20 05:52:21,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1202 transitions. [2021-11-20 05:52:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:52:21,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:21,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:21,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 05:52:21,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:21,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:21,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-20 05:52:21,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:21,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013723234] [2021-11-20 05:52:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:21,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:21,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:21,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:21,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:52:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:21,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:52:21,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:21,793 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 [2021-11-20 05:52:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:21,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:21,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:21,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013723234] [2021-11-20 05:52:21,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013723234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:21,871 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:21,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:52:21,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594379546] [2021-11-20 05:52:21,872 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:21,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:52:21,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:52:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:21,877 INFO L87 Difference]: Start difference. First operand 1092 states and 1202 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:24,595 INFO L93 Difference]: Finished difference Result 1420 states and 1555 transitions. [2021-11-20 05:52:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:24,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 05:52:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:24,608 INFO L225 Difference]: With dead ends: 1420 [2021-11-20 05:52:24,608 INFO L226 Difference]: Without dead ends: 1420 [2021-11-20 05:52:24,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:24,614 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 992 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:24,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1201 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 05:52:24,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-20 05:52:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1043. [2021-11-20 05:52:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 574 states have (on average 1.975609756097561) internal successors, (1134), 1037 states have internal predecessors, (1134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1150 transitions. [2021-11-20 05:52:24,663 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1150 transitions. Word has length 8 [2021-11-20 05:52:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:24,664 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1150 transitions. [2021-11-20 05:52:24,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1150 transitions. [2021-11-20 05:52:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:52:24,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:24,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:24,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:24,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:24,879 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-20 05:52:24,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:24,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669688816] [2021-11-20 05:52:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:24,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:24,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:24,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:24,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:52:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:25,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:25,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:25,093 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 [2021-11-20 05:52:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:25,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:25,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:25,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669688816] [2021-11-20 05:52:25,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669688816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:25,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:25,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 05:52:25,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097517331] [2021-11-20 05:52:25,254 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:25,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:25,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:25,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:25,255 INFO L87 Difference]: Start difference. First operand 1043 states and 1150 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:30,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:30,654 INFO L93 Difference]: Finished difference Result 1463 states and 1562 transitions. [2021-11-20 05:52:30,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 05:52:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:30,665 INFO L225 Difference]: With dead ends: 1463 [2021-11-20 05:52:30,666 INFO L226 Difference]: Without dead ends: 1463 [2021-11-20 05:52:30,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:30,667 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 1407 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:30,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1556 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 05:52:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-11-20 05:52:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1033. [2021-11-20 05:52:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 574 states have (on average 1.9529616724738676) internal successors, (1121), 1027 states have internal predecessors, (1121), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1137 transitions. [2021-11-20 05:52:30,705 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1137 transitions. Word has length 8 [2021-11-20 05:52:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:30,706 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1137 transitions. [2021-11-20 05:52:30,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1137 transitions. [2021-11-20 05:52:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:52:30,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:30,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:30,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:30,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:30,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:30,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 871377621, now seen corresponding path program 1 times [2021-11-20 05:52:30,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:30,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914611895] [2021-11-20 05:52:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:30,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:30,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:30,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:52:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:31,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:52:31,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:31,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:31,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914611895] [2021-11-20 05:52:31,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914611895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:31,317 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:31,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:52:31,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116295320] [2021-11-20 05:52:31,318 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:31,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:31,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:31,319 INFO L87 Difference]: Start difference. First operand 1033 states and 1137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:32,262 INFO L93 Difference]: Finished difference Result 1479 states and 1615 transitions. [2021-11-20 05:52:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:52:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 05:52:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:32,273 INFO L225 Difference]: With dead ends: 1479 [2021-11-20 05:52:32,273 INFO L226 Difference]: Without dead ends: 1479 [2021-11-20 05:52:32,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:32,274 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 547 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:32,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3025 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 05:52:32,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-20 05:52:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1269. [2021-11-20 05:52:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 810 states have (on average 1.9395061728395062) internal successors, (1571), 1263 states have internal predecessors, (1571), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1587 transitions. [2021-11-20 05:52:32,317 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1587 transitions. Word has length 11 [2021-11-20 05:52:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:32,317 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1587 transitions. [2021-11-20 05:52:32,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1587 transitions. [2021-11-20 05:52:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:52:32,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:32,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:32,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 05:52:32,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:32,533 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr532ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1242903717, now seen corresponding path program 1 times [2021-11-20 05:52:32,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:32,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853965191] [2021-11-20 05:52:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:32,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:32,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:32,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:32,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:52:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:32,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:32,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:32,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:52:32,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:52:32,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:52:32,759 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-20 05:52:32,759 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 [2021-11-20 05:52:32,850 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-20 05:52:32,851 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 [2021-11-20 05:52:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:32,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:32,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:32,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853965191] [2021-11-20 05:52:32,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853965191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:32,981 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:32,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:52:32,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117425598] [2021-11-20 05:52:32,982 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:32,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:32,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:32,983 INFO L87 Difference]: Start difference. First operand 1269 states and 1587 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:34,987 INFO L93 Difference]: Finished difference Result 1643 states and 2031 transitions. [2021-11-20 05:52:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:34,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 05:52:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:34,999 INFO L225 Difference]: With dead ends: 1643 [2021-11-20 05:52:34,999 INFO L226 Difference]: Without dead ends: 1643 [2021-11-20 05:52:34,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:35,000 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 746 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:35,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 3895 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 05:52:35,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-20 05:52:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1268. [2021-11-20 05:52:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 809 states have (on average 1.9394313967861558) internal successors, (1569), 1262 states have internal predecessors, (1569), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1585 transitions. [2021-11-20 05:52:35,045 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1585 transitions. Word has length 12 [2021-11-20 05:52:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:35,045 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1585 transitions. [2021-11-20 05:52:35,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1585 transitions. [2021-11-20 05:52:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:52:35,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:35,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:35,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:35,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:35,263 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-20 05:52:35,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:35,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759194824] [2021-11-20 05:52:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:35,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:35,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:35,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:35,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:52:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:52:35,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:35,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:35,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759194824] [2021-11-20 05:52:35,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759194824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:35,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:35,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:52:35,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244909764] [2021-11-20 05:52:35,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:35,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:35,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:35,587 INFO L87 Difference]: Start difference. First operand 1268 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:35,630 INFO L93 Difference]: Finished difference Result 1208 states and 1499 transitions. [2021-11-20 05:52:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:35,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 05:52:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:35,639 INFO L225 Difference]: With dead ends: 1208 [2021-11-20 05:52:35,639 INFO L226 Difference]: Without dead ends: 1208 [2021-11-20 05:52:35,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:35,641 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 976 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:35,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1071 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-20 05:52:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2021-11-20 05:52:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 773 states have (on average 1.9184993531694696) internal successors, (1483), 1202 states have internal predecessors, (1483), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1499 transitions. [2021-11-20 05:52:35,678 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1499 transitions. Word has length 18 [2021-11-20 05:52:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:35,678 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1499 transitions. [2021-11-20 05:52:35,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1499 transitions. [2021-11-20 05:52:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:52:35,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:35,680 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] [2021-11-20 05:52:35,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:35,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:35,894 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-20 05:52:35,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:35,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290753330] [2021-11-20 05:52:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:35,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:35,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:35,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:35,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:52:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:36,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:36,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:36,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:36,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290753330] [2021-11-20 05:52:36,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290753330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:36,180 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:36,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 05:52:36,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878663102] [2021-11-20 05:52:36,181 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:36,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:52:36,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:52:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:36,182 INFO L87 Difference]: Start difference. First operand 1208 states and 1499 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:36,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:36,289 INFO L93 Difference]: Finished difference Result 1180 states and 1443 transitions. [2021-11-20 05:52:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:36,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 05:52:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:36,296 INFO L225 Difference]: With dead ends: 1180 [2021-11-20 05:52:36,297 INFO L226 Difference]: Without dead ends: 1180 [2021-11-20 05:52:36,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:36,298 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 1884 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:36,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 1949 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:52:36,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-11-20 05:52:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2021-11-20 05:52:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 757 states have (on average 1.8824306472919419) internal successors, (1425), 1172 states have internal predecessors, (1425), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1441 transitions. [2021-11-20 05:52:36,329 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1441 transitions. Word has length 20 [2021-11-20 05:52:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:36,330 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1441 transitions. [2021-11-20 05:52:36,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1441 transitions. [2021-11-20 05:52:36,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:52:36,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:36,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:36,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:36,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:36,546 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-20 05:52:36,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:36,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326059421] [2021-11-20 05:52:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:36,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:36,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:36,548 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:36,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:52:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:36,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:36,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:36,755 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 [2021-11-20 05:52:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:36,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:37,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:37,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326059421] [2021-11-20 05:52:37,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326059421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:37,055 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:37,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:52:37,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075050231] [2021-11-20 05:52:37,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:37,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:37,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:37,057 INFO L87 Difference]: Start difference. First operand 1178 states and 1441 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:39,490 INFO L93 Difference]: Finished difference Result 1660 states and 2054 transitions. [2021-11-20 05:52:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:52:39,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 05:52:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:39,500 INFO L225 Difference]: With dead ends: 1660 [2021-11-20 05:52:39,501 INFO L226 Difference]: Without dead ends: 1660 [2021-11-20 05:52:39,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:39,502 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1738 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:39,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 1063 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 05:52:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-11-20 05:52:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1174. [2021-11-20 05:52:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 757 states have (on average 1.8718626155878468) internal successors, (1417), 1168 states have internal predecessors, (1417), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1433 transitions. [2021-11-20 05:52:39,538 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1433 transitions. Word has length 34 [2021-11-20 05:52:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:39,539 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1433 transitions. [2021-11-20 05:52:39,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1433 transitions. [2021-11-20 05:52:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:52:39,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:39,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:39,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:39,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:39,759 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-20 05:52:39,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:39,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932806840] [2021-11-20 05:52:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:39,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:39,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:39,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:39,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:52:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:39,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:52:39,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:39,942 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 [2021-11-20 05:52:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:40,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:40,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:40,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932806840] [2021-11-20 05:52:40,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932806840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:40,831 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:40,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:52:40,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824708167] [2021-11-20 05:52:40,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:40,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:40,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:40,834 INFO L87 Difference]: Start difference. First operand 1174 states and 1433 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:49,626 INFO L93 Difference]: Finished difference Result 1791 states and 2207 transitions. [2021-11-20 05:52:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:52:49,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 05:52:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:49,636 INFO L225 Difference]: With dead ends: 1791 [2021-11-20 05:52:49,636 INFO L226 Difference]: Without dead ends: 1791 [2021-11-20 05:52:49,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:52:49,638 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 1279 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:49,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 2916 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-20 05:52:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-20 05:52:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1170. [2021-11-20 05:52:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 757 states have (on average 1.8612945838837516) internal successors, (1409), 1164 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1425 transitions. [2021-11-20 05:52:49,673 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1425 transitions. Word has length 34 [2021-11-20 05:52:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:49,674 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 1425 transitions. [2021-11-20 05:52:49,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1425 transitions. [2021-11-20 05:52:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 05:52:49,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:49,677 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] [2021-11-20 05:52:49,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:49,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:49,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-20 05:52:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:49,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579290226] [2021-11-20 05:52:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:49,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:49,895 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:49,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:52:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:50,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:50,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:50,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:50,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:50,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579290226] [2021-11-20 05:52:50,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579290226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:50,411 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:50,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:52:50,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667833272] [2021-11-20 05:52:50,412 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:50,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:50,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:50,413 INFO L87 Difference]: Start difference. First operand 1170 states and 1425 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:50,490 INFO L93 Difference]: Finished difference Result 1158 states and 1405 transitions. [2021-11-20 05:52:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:50,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-20 05:52:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:50,498 INFO L225 Difference]: With dead ends: 1158 [2021-11-20 05:52:50,499 INFO L226 Difference]: Without dead ends: 1158 [2021-11-20 05:52:50,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:50,500 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 923 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:50,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 1927 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-20 05:52:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-11-20 05:52:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 745 states have (on average 1.8644295302013423) internal successors, (1389), 1152 states have internal predecessors, (1389), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:52:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1405 transitions. [2021-11-20 05:52:50,553 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1405 transitions. Word has length 52 [2021-11-20 05:52:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:50,554 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1405 transitions. [2021-11-20 05:52:50,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1405 transitions. [2021-11-20 05:52:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 05:52:50,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:50,559 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] [2021-11-20 05:52:50,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:50,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:50,775 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:52:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-20 05:52:50,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:50,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353265007] [2021-11-20 05:52:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:50,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:50,780 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:50,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:52:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:51,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:52:51,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:51,118 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 [2021-11-20 05:52:51,125 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 [2021-11-20 05:52:52,022 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:52,022 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 27 treesize of output 29 [2021-11-20 05:52:52,048 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:52:52,048 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 26 treesize of output 22 [2021-11-20 05:52:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:52,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:59,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:59,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353265007] [2021-11-20 05:52:59,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353265007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:59,943 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:59,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:52:59,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201122770] [2021-11-20 05:52:59,943 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:59,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:59,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:59,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-20 05:52:59,945 INFO L87 Difference]: Start difference. First operand 1158 states and 1405 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:06,046 INFO L93 Difference]: Finished difference Result 1769 states and 2114 transitions. [2021-11-20 05:53:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-20 05:53:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:06,059 INFO L225 Difference]: With dead ends: 1769 [2021-11-20 05:53:06,059 INFO L226 Difference]: Without dead ends: 1769 [2021-11-20 05:53:06,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2021-11-20 05:53:06,060 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 1532 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1074 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:06,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1868 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1434 Invalid, 0 Unknown, 1074 Unchecked, 6.0s Time] [2021-11-20 05:53:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-11-20 05:53:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1136. [2021-11-20 05:53:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 755 states have (on average 1.8211920529801324) internal successors, (1375), 1130 states have internal predecessors, (1375), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:53:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1391 transitions. [2021-11-20 05:53:06,093 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1391 transitions. Word has length 60 [2021-11-20 05:53:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:06,093 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1391 transitions. [2021-11-20 05:53:06,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1391 transitions. [2021-11-20 05:53:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 05:53:06,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:06,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:06,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-20 05:53:06,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:06,313 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-20 05:53:06,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:06,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822609549] [2021-11-20 05:53:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:06,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:06,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:06,315 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:06,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:53:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:06,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:06,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:06,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:06,901 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 [2021-11-20 05:53:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:07,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822609549] [2021-11-20 05:53:07,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822609549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:07,230 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:07,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:53:07,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337973065] [2021-11-20 05:53:07,230 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:07,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:53:07,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:07,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:53:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:07,232 INFO L87 Difference]: Start difference. First operand 1136 states and 1391 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:09,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:09,275 INFO L93 Difference]: Finished difference Result 1134 states and 1389 transitions. [2021-11-20 05:53:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:09,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-20 05:53:09,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:09,282 INFO L225 Difference]: With dead ends: 1134 [2021-11-20 05:53:09,282 INFO L226 Difference]: Without dead ends: 1134 [2021-11-20 05:53:09,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:09,284 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 2527 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:09,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 562 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 05:53:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-20 05:53:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-20 05:53:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 755 states have (on average 1.818543046357616) internal successors, (1373), 1128 states have internal predecessors, (1373), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:53:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1389 transitions. [2021-11-20 05:53:09,309 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1389 transitions. Word has length 62 [2021-11-20 05:53:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:09,310 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1389 transitions. [2021-11-20 05:53:09,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1389 transitions. [2021-11-20 05:53:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:53:09,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:09,312 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] [2021-11-20 05:53:09,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:09,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:09,526 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:09,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-20 05:53:09,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:09,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606427474] [2021-11-20 05:53:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:09,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:09,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:09,529 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:09,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:53:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:09,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:53:09,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:09,975 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 [2021-11-20 05:53:09,996 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 [2021-11-20 05:53:10,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 05:53:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:10,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:10,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:10,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606427474] [2021-11-20 05:53:10,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606427474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:10,243 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:10,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:53:10,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632156660] [2021-11-20 05:53:10,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:10,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:53:10,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:10,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:53:10,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:10,244 INFO L87 Difference]: Start difference. First operand 1134 states and 1389 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:13,484 INFO L93 Difference]: Finished difference Result 1133 states and 1388 transitions. [2021-11-20 05:53:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:53:13,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 05:53:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:13,490 INFO L225 Difference]: With dead ends: 1133 [2021-11-20 05:53:13,490 INFO L226 Difference]: Without dead ends: 1133 [2021-11-20 05:53:13,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:13,491 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:13,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2377 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 05:53:13,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-20 05:53:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-11-20 05:53:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 755 states have (on average 1.8172185430463577) internal successors, (1372), 1127 states have internal predecessors, (1372), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:53:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1388 transitions. [2021-11-20 05:53:13,514 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1388 transitions. Word has length 65 [2021-11-20 05:53:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:13,514 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1388 transitions. [2021-11-20 05:53:13,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1388 transitions. [2021-11-20 05:53:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:53:13,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:13,516 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] [2021-11-20 05:53:13,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 05:53:13,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:13,730 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-20 05:53:13,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816269387] [2021-11-20 05:53:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:13,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:13,734 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:13,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:53:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:53:14,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:14,149 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 [2021-11-20 05:53:14,182 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 [2021-11-20 05:53:14,197 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 [2021-11-20 05:53:14,294 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 [2021-11-20 05:53:14,299 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 [2021-11-20 05:53:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:14,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:14,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:14,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816269387] [2021-11-20 05:53:14,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816269387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:14,771 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:14,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 05:53:14,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084484174] [2021-11-20 05:53:14,772 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:14,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:53:14,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:53:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:14,773 INFO L87 Difference]: Start difference. First operand 1133 states and 1388 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:23,811 INFO L93 Difference]: Finished difference Result 1132 states and 1387 transitions. [2021-11-20 05:53:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:53:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 05:53:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:23,819 INFO L225 Difference]: With dead ends: 1132 [2021-11-20 05:53:23,819 INFO L226 Difference]: Without dead ends: 1132 [2021-11-20 05:53:23,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:53:23,820 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:23,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2400 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-11-20 05:53:23,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-11-20 05:53:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2021-11-20 05:53:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 754 states have (on average 1.8183023872679045) internal successors, (1371), 1126 states have internal predecessors, (1371), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:53:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1387 transitions. [2021-11-20 05:53:23,845 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1387 transitions. Word has length 65 [2021-11-20 05:53:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:23,846 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1387 transitions. [2021-11-20 05:53:23,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1387 transitions. [2021-11-20 05:53:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 05:53:23,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:23,848 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] [2021-11-20 05:53:23,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:24,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:24,067 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash 845908815, now seen corresponding path program 1 times [2021-11-20 05:53:24,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:24,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514232157] [2021-11-20 05:53:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:24,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:24,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:24,071 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:24,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:53:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:24,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:24,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:24,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:24,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:24,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514232157] [2021-11-20 05:53:24,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514232157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:24,795 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:24,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:53:24,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395061954] [2021-11-20 05:53:24,795 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:24,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:53:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:53:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:24,797 INFO L87 Difference]: Start difference. First operand 1132 states and 1387 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:24,938 INFO L93 Difference]: Finished difference Result 1142 states and 1400 transitions. [2021-11-20 05:53:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:53:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-20 05:53:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:24,955 INFO L225 Difference]: With dead ends: 1142 [2021-11-20 05:53:24,955 INFO L226 Difference]: Without dead ends: 1142 [2021-11-20 05:53:24,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:24,956 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 9 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:24,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2754 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:24,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-11-20 05:53:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2021-11-20 05:53:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 762 states have (on average 1.81496062992126) internal successors, (1383), 1135 states have internal predecessors, (1383), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:53:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1400 transitions. [2021-11-20 05:53:25,012 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1400 transitions. Word has length 73 [2021-11-20 05:53:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:25,013 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1400 transitions. [2021-11-20 05:53:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1400 transitions. [2021-11-20 05:53:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 05:53:25,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:25,017 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] [2021-11-20 05:53:25,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:25,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:25,234 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1863463505, now seen corresponding path program 1 times [2021-11-20 05:53:25,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:25,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407717684] [2021-11-20 05:53:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:25,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:25,238 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:25,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:53:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:25,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:25,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:26,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:26,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407717684] [2021-11-20 05:53:26,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407717684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:26,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:26,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-20 05:53:26,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161287918] [2021-11-20 05:53:26,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:26,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:53:26,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:53:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:53:26,095 INFO L87 Difference]: Start difference. First operand 1142 states and 1400 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:26,591 INFO L93 Difference]: Finished difference Result 1156 states and 1418 transitions. [2021-11-20 05:53:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:53:26,596 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2021-11-20 05:53:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:26,602 INFO L225 Difference]: With dead ends: 1156 [2021-11-20 05:53:26,602 INFO L226 Difference]: Without dead ends: 1152 [2021-11-20 05:53:26,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:53:26,604 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 26 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:26,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 3680 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:53:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-20 05:53:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1148. [2021-11-20 05:53:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 768 states have (on average 1.8111979166666667) internal successors, (1391), 1141 states have internal predecessors, (1391), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:53:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1408 transitions. [2021-11-20 05:53:26,629 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1408 transitions. Word has length 75 [2021-11-20 05:53:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:26,630 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1408 transitions. [2021-11-20 05:53:26,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1408 transitions. [2021-11-20 05:53:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 05:53:26,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:26,631 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] [2021-11-20 05:53:26,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:26,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:26,848 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1287850607, now seen corresponding path program 2 times [2021-11-20 05:53:26,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:26,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044575437] [2021-11-20 05:53:26,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:26,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:26,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:26,851 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:26,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:53:27,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:53:27,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:27,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:53:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:27,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:28,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:28,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044575437] [2021-11-20 05:53:28,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044575437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:28,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:28,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-20 05:53:28,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171449084] [2021-11-20 05:53:28,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:28,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:53:28,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:53:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:53:28,276 INFO L87 Difference]: Start difference. First operand 1148 states and 1408 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:29,884 INFO L93 Difference]: Finished difference Result 1176 states and 1446 transitions. [2021-11-20 05:53:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 05:53:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-20 05:53:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:29,894 INFO L225 Difference]: With dead ends: 1176 [2021-11-20 05:53:29,894 INFO L226 Difference]: Without dead ends: 1172 [2021-11-20 05:53:29,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 05:53:29,896 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 69 mSDsluCounter, 7373 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8299 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:29,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 8299 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:53:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-20 05:53:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1160. [2021-11-20 05:53:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 780 states have (on average 1.8038461538461539) internal successors, (1407), 1153 states have internal predecessors, (1407), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:53:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1424 transitions. [2021-11-20 05:53:29,930 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1424 transitions. Word has length 79 [2021-11-20 05:53:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:29,931 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1424 transitions. [2021-11-20 05:53:29,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1424 transitions. [2021-11-20 05:53:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 05:53:29,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:29,933 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] [2021-11-20 05:53:29,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:30,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:30,146 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:30,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1034394641, now seen corresponding path program 3 times [2021-11-20 05:53:30,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:30,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004086890] [2021-11-20 05:53:30,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:53:30,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:30,149 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:30,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:53:31,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 05:53:31,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:31,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:53:31,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:31,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:33,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:33,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004086890] [2021-11-20 05:53:33,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004086890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:33,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:33,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-20 05:53:33,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055190256] [2021-11-20 05:53:33,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:33,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 05:53:33,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 05:53:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 05:53:33,548 INFO L87 Difference]: Start difference. First operand 1160 states and 1424 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:42,508 INFO L93 Difference]: Finished difference Result 1216 states and 1508 transitions. [2021-11-20 05:53:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 05:53:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 87 [2021-11-20 05:53:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:42,516 INFO L225 Difference]: With dead ends: 1216 [2021-11-20 05:53:42,517 INFO L226 Difference]: Without dead ends: 1210 [2021-11-20 05:53:42,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 05:53:42,520 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 251 mSDsluCounter, 14850 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 15783 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:42,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 15783 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 05:53:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-20 05:53:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1184. [2021-11-20 05:53:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 804 states have (on average 1.7885572139303483) internal successors, (1438), 1177 states have internal predecessors, (1438), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:53:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1455 transitions. [2021-11-20 05:53:42,573 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1455 transitions. Word has length 87 [2021-11-20 05:53:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:42,573 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1455 transitions. [2021-11-20 05:53:42,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1455 transitions. [2021-11-20 05:53:42,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:53:42,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:42,575 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] [2021-11-20 05:53:42,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:42,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:42,789 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:53:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -831613201, now seen corresponding path program 4 times [2021-11-20 05:53:42,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:42,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429458622] [2021-11-20 05:53:42,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:53:42,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:42,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:42,792 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:42,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:53:43,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:53:43,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:43,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 05:53:43,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:44,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:48,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429458622] [2021-11-20 05:53:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429458622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:48,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:48,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-20 05:53:48,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039808227] [2021-11-20 05:53:48,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:48,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-20 05:53:48,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-20 05:53:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 05:53:48,874 INFO L87 Difference]: Start difference. First operand 1184 states and 1455 transitions. Second operand has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:54:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:04,252 INFO L93 Difference]: Finished difference Result 1276 states and 1575 transitions. [2021-11-20 05:54:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-20 05:54:04,254 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2021-11-20 05:54:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:04,260 INFO L225 Difference]: With dead ends: 1276 [2021-11-20 05:54:04,261 INFO L226 Difference]: Without dead ends: 1272 [2021-11-20 05:54:04,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-20 05:54:04,270 INFO L933 BasicCegarLoop]: 949 mSDtfsCounter, 260 mSDsluCounter, 30215 mSDsCounter, 0 mSdLazyCounter, 4016 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 31164 SdHoareTripleChecker+Invalid, 4529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 4016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:04,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 31164 Invalid, 4529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 4016 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-20 05:54:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-11-20 05:54:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1214. [2021-11-20 05:54:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 834 states have (on average 1.7793764988009593) internal successors, (1484), 1207 states have internal predecessors, (1484), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:54:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1501 transitions. [2021-11-20 05:54:04,305 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1501 transitions. Word has length 103 [2021-11-20 05:54:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:04,305 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1501 transitions. [2021-11-20 05:54:04,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:54:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1501 transitions. [2021-11-20 05:54:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 05:54:04,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:04,308 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] [2021-11-20 05:54:04,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:04,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:04,522 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-20 05:54:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash 869177231, now seen corresponding path program 5 times [2021-11-20 05:54:04,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:04,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445900024] [2021-11-20 05:54:04,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:54:04,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:04,524 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:04,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c31af-3939-47e3-8f2d-7b8bf284543e/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:54:05,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-20 05:54:05,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:54:05,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-20 05:54:05,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:05,843 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 [2021-11-20 05:54:06,094 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 [2021-11-20 05:54:06,110 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:54:06,110 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 14 treesize of output 14 [2021-11-20 05:54:06,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 05:54:06,164 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 [2021-11-20 05:54:06,309 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 31 treesize of output 19 [2021-11-20 05:54:06,314 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 19 treesize of output 13 [2021-11-20 06:00:45,980 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:00:54,831 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr234_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_190| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_186| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_181|)) (.cse1 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_182|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_183|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_184|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_185|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_186|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_187|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_188|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_189|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_190|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_191|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_192|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_193|))) (and (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse1 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse13) .cse1 .cse13) .cse2 .cse13) .cse3 .cse13) .cse4 .cse13) .cse5 .cse13) .cse6 .cse13) .cse7 .cse13) .cse8 .cse13) .cse9 .cse13) .cse10 .cse13) .cse11 .cse13) .cse12 .cse13))))))) (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32)))) is different from false [2021-11-20 06:01:03,862 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_190| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_186| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_181|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_182|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_183|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_184|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_185|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_186|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_187|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_188|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_189|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_190|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_191|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_192|)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_193|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_194|))) (and (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1) .cse7 .cse1) .cse8 .cse1) .cse9 .cse1) .cse10 .cse1) .cse11 .cse1) .cse12 .cse1) .cse13 .cse1) .cse14 .cse1))) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |c_#memory_$Pointer$.base|))))) is different from false [2021-11-20 06:02:14,217 WARN L227 SmtUtils]: Spent 7.40s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:02:21,855 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr234_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_190| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_196| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_195| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_186| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_181|)) (.cse1 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_182|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_183|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_184|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_185|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_186|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_187|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_188|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_189|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_190|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_191|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_192|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_193|)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_194|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_195|)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_196|))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse1 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse16) .cse1 .cse16) .cse2 .cse16) .cse3 .cse16) .cse4 .cse16) .cse5 .cse16) .cse6 .cse16) .cse7 .cse16) .cse8 .cse16) .cse9 .cse16) .cse10 .cse16) .cse11 .cse16) .cse12 .cse16) .cse13 .cse16) .cse14 .cse16) .cse15 .cse16))))))) (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32)))) is different from false [2021-11-20 06:02:31,308 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr234_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_190| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_196| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_195| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_186| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_197| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_181|)) (.cse1 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_182|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_183|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_184|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_185|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_186|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_187|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_188|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_189|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_190|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_191|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_192|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_193|)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_194|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_195|)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_196|)) (.cse16 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr234_197|))) (and (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse1 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse17) .cse1 .cse17) .cse2 .cse17) .cse3 .cse17) .cse4 .cse17) .cse5 .cse17) .cse6 .cse17) .cse7 .cse17) .cse8 .cse17) .cse9 .cse17) .cse10 .cse17) .cse11 .cse17) .cse12 .cse17) .cse13 .cse17) .cse14 .cse17) .cse15 .cse17) .cse16 .cse17))))))) (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32)))) is different from false [2021-11-20 06:05:46,267 WARN L227 SmtUtils]: Spent 10.12s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)