./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:21:01,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:21:01,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:21:01,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:21:01,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:21:01,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:21:01,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:21:01,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:21:01,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:21:01,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:21:01,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:21:01,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:21:01,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:21:01,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:21:01,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:21:01,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:21:01,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:21:01,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:21:01,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:21:01,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:21:01,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:21:01,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:21:01,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:21:01,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:21:01,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:21:01,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:21:01,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:21:01,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:21:01,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:21:01,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:21:01,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:21:01,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:21:01,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:21:01,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:21:01,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:21:01,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:21:01,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:21:01,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:21:01,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:21:01,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:21:01,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:21:01,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:21:01,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:21:01,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:21:01,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:21:01,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:21:01,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:21:01,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:21:01,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:21:01,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:21:01,625 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:21:01,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:21:01,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:21:01,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:21:01,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:21:01,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:21:01,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:21:01,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:21:01,628 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:21:01,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:21:01,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:21:01,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:21:01,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:21:01,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:21:01,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:21:01,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:21:01,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:21:01,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:01,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:21:01,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:21:01,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:21:01,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:21:01,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:21:01,633 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2021-11-20 06:21:01,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:21:01,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:21:01,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:21:01,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:21:01,961 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:21:01,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-20 06:21:02,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/55e21ea98/7365f3b6b12b4ceb8101a063e092f266/FLAG642f5c8fb [2021-11-20 06:21:02,715 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:21:02,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-20 06:21:02,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/55e21ea98/7365f3b6b12b4ceb8101a063e092f266/FLAG642f5c8fb [2021-11-20 06:21:02,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/55e21ea98/7365f3b6b12b4ceb8101a063e092f266 [2021-11-20 06:21:02,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:21:02,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:21:02,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:02,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:21:02,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:21:02,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:02" (1/1) ... [2021-11-20 06:21:02,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de88491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:02, skipping insertion in model container [2021-11-20 06:21:02,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:02" (1/1) ... [2021-11-20 06:21:02,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:21:03,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:03,436 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-20 06:21:03,589 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-20 06:21:03,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:03,669 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 06:21:03,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@643839b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:03, skipping insertion in model container [2021-11-20 06:21:03,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:03,670 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 06:21:03,672 INFO L158 Benchmark]: Toolchain (without parser) took 739.20ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 69.3MB in the beginning and 97.4MB in the end (delta: -28.1MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-11-20 06:21:03,673 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:21:03,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.71ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 69.0MB in the beginning and 97.4MB in the end (delta: -28.4MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-11-20 06:21:03,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 736.71ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 69.0MB in the beginning and 97.4MB in the end (delta: -28.4MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:21:06,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:21:06,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:21:06,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:21:06,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:21:06,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:21:06,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:21:06,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:21:06,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:21:06,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:21:06,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:21:06,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:21:06,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:21:06,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:21:06,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:21:06,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:21:06,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:21:06,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:21:06,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:21:06,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:21:06,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:21:06,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:21:06,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:21:06,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:21:06,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:21:06,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:21:06,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:21:06,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:21:06,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:21:06,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:21:06,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:21:06,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:21:06,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:21:06,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:21:06,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:21:06,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:21:06,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:21:06,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:21:06,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:21:06,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:21:06,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:21:06,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:21:06,175 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:21:06,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:21:06,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:21:06,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:21:06,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:21:06,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:21:06,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:21:06,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:21:06,180 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:21:06,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:21:06,182 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:21:06,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:21:06,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:21:06,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:21:06,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:21:06,183 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:21:06,183 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:21:06,183 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:21:06,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:21:06,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:21:06,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:21:06,184 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:21:06,184 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:21:06,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:21:06,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:21:06,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:21:06,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:21:06,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:06,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:21:06,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:21:06,186 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:21:06,186 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:21:06,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:21:06,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:21:06,187 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2021-11-20 06:21:06,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:21:06,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:21:06,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:21:06,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:21:06,632 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:21:06,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-20 06:21:06,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/62f910da7/b9d0a4243492461382624d63c95a209f/FLAGa8ce18ab4 [2021-11-20 06:21:07,448 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:21:07,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2021-11-20 06:21:07,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/62f910da7/b9d0a4243492461382624d63c95a209f/FLAGa8ce18ab4 [2021-11-20 06:21:07,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/data/62f910da7/b9d0a4243492461382624d63c95a209f [2021-11-20 06:21:07,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:21:07,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:21:07,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:07,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:21:07,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:21:07,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:07" (1/1) ... [2021-11-20 06:21:07,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a51976f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:07, skipping insertion in model container [2021-11-20 06:21:07,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:07" (1/1) ... [2021-11-20 06:21:07,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:21:07,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:08,236 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-20 06:21:08,508 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-20 06:21:08,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:08,541 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:21:08,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:08,575 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-20 06:21:08,700 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-20 06:21:08,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:08,735 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:21:08,781 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2021-11-20 06:21:08,873 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_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2021-11-20 06:21:08,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:08,959 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:21:08,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08 WrapperNode [2021-11-20 06:21:08,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:08,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:08,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:21:08,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:21:08,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,117 INFO L137 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1578 [2021-11-20 06:21:09,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:09,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:21:09,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:21:09,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:21:09,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:21:09,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:21:09,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:21:09,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:21:09,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (1/1) ... [2021-11-20 06:21:09,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:09,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:21:09,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 06:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 06:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:21:09,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:21:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 06:21:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 06:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:21:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 06:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:21:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:21:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:21:09,800 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:21:09,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:21:09,806 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 06:21:17,251 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:21:17,269 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:21:17,269 INFO L301 CfgBuilder]: Removed 92 assume(true) statements. [2021-11-20 06:21:17,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:17 BoogieIcfgContainer [2021-11-20 06:21:17,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:21:17,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:21:17,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:21:17,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:21:17,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:21:07" (1/3) ... [2021-11-20 06:21:17,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55eafc18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:17, skipping insertion in model container [2021-11-20 06:21:17,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:08" (2/3) ... [2021-11-20 06:21:17,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55eafc18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:17, skipping insertion in model container [2021-11-20 06:21:17,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:17" (3/3) ... [2021-11-20 06:21:17,282 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-2.i [2021-11-20 06:21:17,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:21:17,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2021-11-20 06:21:17,335 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:21:17,342 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 06:21:17,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2021-11-20 06:21:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 06:21:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:21:17,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:17,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:21:17,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:17,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-20 06:21:17,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410399203] [2021-11-20 06:21:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:17,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:17,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:21:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:17,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:21:17,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:17,652 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 06:21:17,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:17,663 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 06:21:17,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:17,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410399203] [2021-11-20 06:21:17,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410399203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:17,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:17,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:21:17,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250947347] [2021-11-20 06:21:17,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:17,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:21:17,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:21:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:21:17,707 INFO L87 Difference]: Start difference. First operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 06:21:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:17,849 INFO L93 Difference]: Finished difference Result 1637 states and 1731 transitions. [2021-11-20 06:21:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:21:17,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-20 06:21:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:17,891 INFO L225 Difference]: With dead ends: 1637 [2021-11-20 06:21:17,891 INFO L226 Difference]: Without dead ends: 1635 [2021-11-20 06:21:17,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:21:17,897 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:17,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:17,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-11-20 06:21:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2021-11-20 06:21:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 804 states have (on average 2.123134328358209) internal successors, (1707), 1626 states have internal predecessors, (1707), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 06:21:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1729 transitions. [2021-11-20 06:21:18,070 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1729 transitions. Word has length 5 [2021-11-20 06:21:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:18,071 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 1729 transitions. [2021-11-20 06:21:18,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 06:21:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1729 transitions. [2021-11-20 06:21:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:21:18,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:18,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:21:18,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:18,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:18,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-20 06:21:18,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:18,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803562002] [2021-11-20 06:21:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:18,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:18,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:18,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:21:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:18,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:21:18,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:18,559 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 06:21:18,589 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 06:21:18,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:18,634 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 06:21:18,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:18,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803562002] [2021-11-20 06:21:18,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803562002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:18,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:18,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:21:18,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169159821] [2021-11-20 06:21:18,635 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:18,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:18,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:18,638 INFO L87 Difference]: Start difference. First operand 1635 states and 1729 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 06:21:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:22,203 INFO L93 Difference]: Finished difference Result 1891 states and 2028 transitions. [2021-11-20 06:21:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-20 06:21:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:22,219 INFO L225 Difference]: With dead ends: 1891 [2021-11-20 06:21:22,219 INFO L226 Difference]: Without dead ends: 1891 [2021-11-20 06:21:22,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 06:21:22,222 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 1369 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:22,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1533 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-20 06:21:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2021-11-20 06:21:22,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1620. [2021-11-20 06:21:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 880 states have (on average 1.9897727272727272) internal successors, (1751), 1611 states have internal predecessors, (1751), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 06:21:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1773 transitions. [2021-11-20 06:21:22,284 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1773 transitions. Word has length 5 [2021-11-20 06:21:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:22,285 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 1773 transitions. [2021-11-20 06:21:22,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 06:21:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1773 transitions. [2021-11-20 06:21:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:21:22,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:22,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:21:22,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 06:21:22,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:22,498 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-20 06:21:22,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:22,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493337834] [2021-11-20 06:21:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:22,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:22,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:22,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:21:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:22,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:21:22,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:22,698 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 06:21:22,725 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 06:21:22,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:22,798 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 06:21:22,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:22,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493337834] [2021-11-20 06:21:22,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493337834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:22,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:22,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 06:21:22,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259572329] [2021-11-20 06:21:22,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:22,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:22,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:22,801 INFO L87 Difference]: Start difference. First operand 1620 states and 1773 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 06:21:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:31,386 INFO L93 Difference]: Finished difference Result 2191 states and 2395 transitions. [2021-11-20 06:21:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:21:31,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-11-20 06:21:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:31,401 INFO L225 Difference]: With dead ends: 2191 [2021-11-20 06:21:31,401 INFO L226 Difference]: Without dead ends: 2191 [2021-11-20 06:21:31,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 06:21:31,403 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 825 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:31,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 2897 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-11-20 06:21:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2021-11-20 06:21:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1776. [2021-11-20 06:21:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1046 states have (on average 1.9665391969407267) internal successors, (2057), 1767 states have internal predecessors, (2057), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 06:21:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2079 transitions. [2021-11-20 06:21:31,466 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2079 transitions. Word has length 5 [2021-11-20 06:21:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:31,466 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 2079 transitions. [2021-11-20 06:21:31,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 06:21:31,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2079 transitions. [2021-11-20 06:21:31,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:21:31,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:31,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:21:31,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:31,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:31,685 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-20 06:21:31,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:31,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240871584] [2021-11-20 06:21:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:31,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:31,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:31,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:31,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:21:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:31,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:21:31,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:31,857 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 06:21:31,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:31,880 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 06:21:31,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:31,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240871584] [2021-11-20 06:21:31,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240871584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:31,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:31,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:21:31,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030695311] [2021-11-20 06:21:31,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:31,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:31,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:31,885 INFO L87 Difference]: Start difference. First operand 1776 states and 2079 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 06:21:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:32,165 INFO L93 Difference]: Finished difference Result 3338 states and 3933 transitions. [2021-11-20 06:21:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:21:32,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-20 06:21:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:32,186 INFO L225 Difference]: With dead ends: 3338 [2021-11-20 06:21:32,187 INFO L226 Difference]: Without dead ends: 3338 [2021-11-20 06:21:32,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 06:21:32,193 INFO L933 BasicCegarLoop]: 1906 mSDtfsCounter, 3858 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3880 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:32,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3880 Valid, 3513 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:21:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2021-11-20 06:21:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2721. [2021-11-20 06:21:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 1986 states have (on average 1.957703927492447) internal successors, (3888), 2706 states have internal predecessors, (3888), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3932 transitions. [2021-11-20 06:21:32,304 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3932 transitions. Word has length 6 [2021-11-20 06:21:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:32,305 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 3932 transitions. [2021-11-20 06:21:32,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 06:21:32,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3932 transitions. [2021-11-20 06:21:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:21:32,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:32,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:32,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-20 06:21:32,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:32,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:32,526 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-20 06:21:32,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:32,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516418230] [2021-11-20 06:21:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:32,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:32,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:32,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:32,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:21:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:32,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:21:32,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:32,741 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 06:21:32,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:32,773 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 06:21:32,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:32,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516418230] [2021-11-20 06:21:32,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516418230] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:32,774 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:32,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:21:32,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623999397] [2021-11-20 06:21:32,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:32,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:32,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:32,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:32,776 INFO L87 Difference]: Start difference. First operand 2721 states and 3932 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 06:21:32,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:32,856 INFO L93 Difference]: Finished difference Result 2661 states and 3846 transitions. [2021-11-20 06:21:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:32,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 06:21:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:32,877 INFO L225 Difference]: With dead ends: 2661 [2021-11-20 06:21:32,877 INFO L226 Difference]: Without dead ends: 2661 [2021-11-20 06:21:32,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 06:21:32,879 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 3100 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3111 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:32,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3111 Valid, 1608 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2021-11-20 06:21:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2661. [2021-11-20 06:21:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 1950 states have (on average 1.9497435897435897) internal successors, (3802), 2646 states have internal predecessors, (3802), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 3846 transitions. [2021-11-20 06:21:32,974 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 3846 transitions. Word has length 11 [2021-11-20 06:21:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:32,974 INFO L470 AbstractCegarLoop]: Abstraction has 2661 states and 3846 transitions. [2021-11-20 06:21:32,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 06:21:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 3846 transitions. [2021-11-20 06:21:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:21:32,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:32,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:32,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:33,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:33,193 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:33,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-20 06:21:33,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:33,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348467309] [2021-11-20 06:21:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:33,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:33,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:33,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:21:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:33,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:21:33,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:33,408 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 06:21:33,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:33,448 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 06:21:33,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:33,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348467309] [2021-11-20 06:21:33,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348467309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:33,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:33,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 06:21:33,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253675264] [2021-11-20 06:21:33,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:33,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:33,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:33,450 INFO L87 Difference]: Start difference. First operand 2661 states and 3846 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 06:21:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:33,559 INFO L93 Difference]: Finished difference Result 2633 states and 3790 transitions. [2021-11-20 06:21:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:21:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 13 [2021-11-20 06:21:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:33,578 INFO L225 Difference]: With dead ends: 2633 [2021-11-20 06:21:33,578 INFO L226 Difference]: Without dead ends: 2633 [2021-11-20 06:21:33,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 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 06:21:33,580 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1521 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:33,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 3119 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2021-11-20 06:21:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2631. [2021-11-20 06:21:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 1934 states have (on average 1.9358841778697) internal successors, (3744), 2616 states have internal predecessors, (3744), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3788 transitions. [2021-11-20 06:21:33,657 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3788 transitions. Word has length 13 [2021-11-20 06:21:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:33,658 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 3788 transitions. [2021-11-20 06:21:33,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 06:21:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3788 transitions. [2021-11-20 06:21:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:21:33,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:33,660 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] [2021-11-20 06:21:33,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:33,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:33,872 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:33,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-20 06:21:33,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:33,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028951460] [2021-11-20 06:21:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:33,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:33,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:33,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:33,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:21:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:34,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:21:34,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:34,043 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 06:21:34,163 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 06:21:34,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:34,258 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 06:21:34,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:34,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028951460] [2021-11-20 06:21:34,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028951460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:34,259 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:34,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:21:34,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208049143] [2021-11-20 06:21:34,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:34,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:34,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:34,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:34,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:34,261 INFO L87 Difference]: Start difference. First operand 2631 states and 3788 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 06:21:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:38,614 INFO L93 Difference]: Finished difference Result 4120 states and 5743 transitions. [2021-11-20 06:21:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:21:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-20 06:21:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:38,635 INFO L225 Difference]: With dead ends: 4120 [2021-11-20 06:21:38,636 INFO L226 Difference]: Without dead ends: 4120 [2021-11-20 06:21:38,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:38,637 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 3206 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:38,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3214 Valid, 1886 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:21:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-11-20 06:21:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 2627. [2021-11-20 06:21:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 1934 states have (on average 1.9317476732161323) internal successors, (3736), 2612 states have internal predecessors, (3736), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3780 transitions. [2021-11-20 06:21:38,722 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3780 transitions. Word has length 27 [2021-11-20 06:21:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:38,722 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 3780 transitions. [2021-11-20 06:21:38,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 06:21:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3780 transitions. [2021-11-20 06:21:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:21:38,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:38,724 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] [2021-11-20 06:21:38,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:38,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:38,942 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-20 06:21:38,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:38,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022266833] [2021-11-20 06:21:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:38,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:38,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:38,946 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:38,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:21:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:39,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:21:39,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:39,140 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 06:21:39,403 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 06:21:39,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:39,841 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 06:21:39,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:39,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022266833] [2021-11-20 06:21:39,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022266833] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:39,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:39,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 06:21:39,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052507791] [2021-11-20 06:21:39,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:39,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:21:39,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:21:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:21:39,844 INFO L87 Difference]: Start difference. First operand 2627 states and 3780 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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 06:21:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:51,621 INFO L93 Difference]: Finished difference Result 3413 states and 4617 transitions. [2021-11-20 06:21:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:21:51,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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 27 [2021-11-20 06:21:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:51,640 INFO L225 Difference]: With dead ends: 3413 [2021-11-20 06:21:51,641 INFO L226 Difference]: Without dead ends: 3413 [2021-11-20 06:21:51,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:21:51,642 INFO L933 BasicCegarLoop]: 1117 mSDtfsCounter, 2519 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2519 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:51,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2519 Valid, 3238 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2021-11-20 06:21:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2021-11-20 06:21:51,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 2623. [2021-11-20 06:21:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 1934 states have (on average 1.9276111685625645) internal successors, (3728), 2608 states have internal predecessors, (3728), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3772 transitions. [2021-11-20 06:21:51,709 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3772 transitions. Word has length 27 [2021-11-20 06:21:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:51,709 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3772 transitions. [2021-11-20 06:21:51,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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 06:21:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3772 transitions. [2021-11-20 06:21:51,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:21:51,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:51,711 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] [2021-11-20 06:21:51,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-20 06:21:51,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:51,926 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:51,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-20 06:21:51,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:51,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849437949] [2021-11-20 06:21:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:51,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:51,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:51,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:21:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:52,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:21:52,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:52,272 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 06:21:52,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:52,381 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 06:21:52,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:52,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849437949] [2021-11-20 06:21:52,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849437949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:52,381 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:52,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:21:52,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028803518] [2021-11-20 06:21:52,382 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:52,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:52,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:52,383 INFO L87 Difference]: Start difference. First operand 2623 states and 3772 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 06:21:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:52,452 INFO L93 Difference]: Finished difference Result 2611 states and 3752 transitions. [2021-11-20 06:21:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:21:52,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-20 06:21:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:52,467 INFO L225 Difference]: With dead ends: 2611 [2021-11-20 06:21:52,468 INFO L226 Difference]: Without dead ends: 2611 [2021-11-20 06:21:52,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 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 06:21:52,469 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 1497 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3069 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 06:21:52,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 3069 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-11-20 06:21:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-11-20 06:21:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 1922 states have (on average 1.9292403746097815) internal successors, (3708), 2596 states have internal predecessors, (3708), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3752 transitions. [2021-11-20 06:21:52,539 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3752 transitions. Word has length 42 [2021-11-20 06:21:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:52,539 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3752 transitions. [2021-11-20 06:21:52,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 06:21:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3752 transitions. [2021-11-20 06:21:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 06:21:52,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:52,542 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] [2021-11-20 06:21:52,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:52,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:52,765 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:52,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-20 06:21:52,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:52,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527698193] [2021-11-20 06:21:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:52,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:52,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:52,768 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:52,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:21:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:52,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:21:52,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:53,298 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 06:21:53,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:53,653 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 06:21:53,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:53,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527698193] [2021-11-20 06:21:53,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527698193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:53,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:53,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:21:53,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474902307] [2021-11-20 06:21:53,654 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:53,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:53,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:53,655 INFO L87 Difference]: Start difference. First operand 2611 states and 3752 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 06:21:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:53,910 INFO L93 Difference]: Finished difference Result 2622 states and 3601 transitions. [2021-11-20 06:21:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:53,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-20 06:21:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:53,921 INFO L225 Difference]: With dead ends: 2622 [2021-11-20 06:21:53,921 INFO L226 Difference]: Without dead ends: 2622 [2021-11-20 06:21:53,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 06:21:53,922 INFO L933 BasicCegarLoop]: 1608 mSDtfsCounter, 269 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:53,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 3012 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:21:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-11-20 06:21:53,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2427. [2021-11-20 06:21:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1738 states have (on average 1.929228998849252) internal successors, (3353), 2412 states have internal predecessors, (3353), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:21:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3397 transitions. [2021-11-20 06:21:53,995 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3397 transitions. Word has length 50 [2021-11-20 06:21:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:53,996 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3397 transitions. [2021-11-20 06:21:53,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 06:21:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3397 transitions. [2021-11-20 06:21:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 06:21:54,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:54,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:54,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:54,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:54,216 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:21:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-20 06:21:54,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:54,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699328426] [2021-11-20 06:21:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:54,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:54,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:54,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:54,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:21:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:54,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:21:54,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:54,576 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 06:21:54,588 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 06:21:55,256 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:21:55,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 06:21:55,267 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:21:55,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 06:21:55,313 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 06:21:55,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:02,228 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 06:22:02,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:02,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699328426] [2021-11-20 06:22:02,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699328426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:02,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:02,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 06:22:02,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519938020] [2021-11-20 06:22:02,229 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:02,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:22:02,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:22:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 06:22:02,230 INFO L87 Difference]: Start difference. First operand 2427 states and 3397 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 06:22:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:02,521 INFO L93 Difference]: Finished difference Result 2426 states and 3395 transitions. [2021-11-20 06:22:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:22:02,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-20 06:22:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:02,531 INFO L225 Difference]: With dead ends: 2426 [2021-11-20 06:22:02,531 INFO L226 Difference]: Without dead ends: 2426 [2021-11-20 06:22:02,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 06:22:02,532 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 128 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1076 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:02,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 2372 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 1076 Unchecked, 0.3s Time] [2021-11-20 06:22:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-11-20 06:22:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2426. [2021-11-20 06:22:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1738 states have (on average 1.928078250863061) internal successors, (3351), 2411 states have internal predecessors, (3351), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:22:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3395 transitions. [2021-11-20 06:22:02,584 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3395 transitions. Word has length 53 [2021-11-20 06:22:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:02,584 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 3395 transitions. [2021-11-20 06:22:02,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 06:22:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3395 transitions. [2021-11-20 06:22:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 06:22:02,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:02,586 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] [2021-11-20 06:22:02,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:02,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:02,806 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:02,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-20 06:22:02,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:02,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449824402] [2021-11-20 06:22:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:02,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:02,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:02,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:02,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:22:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:03,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:22:03,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:03,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:03,329 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 06:22:03,677 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 06:22:03,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:03,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449824402] [2021-11-20 06:22:03,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449824402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:03,678 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:03,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 06:22:03,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110608104] [2021-11-20 06:22:03,678 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:03,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:22:03,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:03,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:22:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:03,680 INFO L87 Difference]: Start difference. First operand 2426 states and 3395 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 06:22:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:07,531 INFO L93 Difference]: Finished difference Result 2393 states and 3329 transitions. [2021-11-20 06:22:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:22:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 55 [2021-11-20 06:22:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:07,538 INFO L225 Difference]: With dead ends: 2393 [2021-11-20 06:22:07,538 INFO L226 Difference]: Without dead ends: 2393 [2021-11-20 06:22:07,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 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 06:22:07,539 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 3641 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3652 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:07,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3652 Valid, 1448 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 06:22:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2021-11-20 06:22:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2393. [2021-11-20 06:22:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2393 states, 1738 states have (on average 1.8901035673187572) internal successors, (3285), 2378 states have internal predecessors, (3285), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:22:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3329 transitions. [2021-11-20 06:22:07,581 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3329 transitions. Word has length 55 [2021-11-20 06:22:07,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:07,582 INFO L470 AbstractCegarLoop]: Abstraction has 2393 states and 3329 transitions. [2021-11-20 06:22:07,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 06:22:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3329 transitions. [2021-11-20 06:22:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 06:22:07,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:07,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:07,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:07,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:07,797 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-20 06:22:07,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:07,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140413365] [2021-11-20 06:22:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:07,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:07,800 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:07,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:22:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:08,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:22:08,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:08,176 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 06:22:08,190 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 06:22:08,237 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 06:22:08,251 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 06:22:08,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:08,388 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 06:22:08,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:08,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140413365] [2021-11-20 06:22:08,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140413365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:08,389 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:08,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:22:08,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884922613] [2021-11-20 06:22:08,390 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:08,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:22:08,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:22:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:22:08,391 INFO L87 Difference]: Start difference. First operand 2393 states and 3329 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 06:22:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:13,559 INFO L93 Difference]: Finished difference Result 2392 states and 3327 transitions. [2021-11-20 06:22:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:13,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2021-11-20 06:22:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:13,569 INFO L225 Difference]: With dead ends: 2392 [2021-11-20 06:22:13,569 INFO L226 Difference]: Without dead ends: 2392 [2021-11-20 06:22:13,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:13,571 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 4 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:13,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3854 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-20 06:22:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2021-11-20 06:22:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2392. [2021-11-20 06:22:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 1738 states have (on average 1.8889528193325662) internal successors, (3283), 2377 states have internal predecessors, (3283), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:22:13,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3327 transitions. [2021-11-20 06:22:13,625 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3327 transitions. Word has length 58 [2021-11-20 06:22:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:13,625 INFO L470 AbstractCegarLoop]: Abstraction has 2392 states and 3327 transitions. [2021-11-20 06:22:13,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 06:22:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3327 transitions. [2021-11-20 06:22:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 06:22:13,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:13,628 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] [2021-11-20 06:22:13,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:13,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:13,852 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:13,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-20 06:22:13,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:13,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415562198] [2021-11-20 06:22:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:13,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:13,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:13,855 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:13,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:22:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:14,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:22:14,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:14,175 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 06:22:14,212 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 06:22:14,225 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 06:22:14,286 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 06:22:14,290 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 06:22:14,312 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 06:22:14,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:14,605 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 06:22:14,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:14,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415562198] [2021-11-20 06:22:14,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415562198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:14,606 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:14,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 06:22:14,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75205000] [2021-11-20 06:22:14,606 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:14,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:22:14,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:14,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:22:14,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:22:14,607 INFO L87 Difference]: Start difference. First operand 2392 states and 3327 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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 06:22:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:30,263 INFO L93 Difference]: Finished difference Result 2391 states and 3325 transitions. [2021-11-20 06:22:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:30,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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 58 [2021-11-20 06:22:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:30,268 INFO L225 Difference]: With dead ends: 2391 [2021-11-20 06:22:30,268 INFO L226 Difference]: Without dead ends: 2391 [2021-11-20 06:22:30,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:22:30,269 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 3 mSDsluCounter, 3849 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5348 SdHoareTripleChecker+Invalid, 3652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:30,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5348 Invalid, 3652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2021-11-20 06:22:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-20 06:22:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2021-11-20 06:22:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 1736 states have (on average 1.8899769585253456) internal successors, (3281), 2376 states have internal predecessors, (3281), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 06:22:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3325 transitions. [2021-11-20 06:22:30,302 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3325 transitions. Word has length 58 [2021-11-20 06:22:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:30,302 INFO L470 AbstractCegarLoop]: Abstraction has 2391 states and 3325 transitions. [2021-11-20 06:22:30,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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 06:22:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3325 transitions. [2021-11-20 06:22:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 06:22:30,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:30,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:22:30,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 06:22:30,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:30,537 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:30,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2015085822, now seen corresponding path program 1 times [2021-11-20 06:22:30,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:30,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993202537] [2021-11-20 06:22:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:30,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:30,540 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:30,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:22:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:30,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:22:30,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:30,929 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 06:22:30,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:31,101 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 06:22:31,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:31,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993202537] [2021-11-20 06:22:31,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993202537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:31,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:31,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:22:31,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520733638] [2021-11-20 06:22:31,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:31,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:22:31,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:22:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:31,104 INFO L87 Difference]: Start difference. First operand 2391 states and 3325 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 06:22:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:31,283 INFO L93 Difference]: Finished difference Result 2401 states and 3341 transitions. [2021-11-20 06:22:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:31,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 66 [2021-11-20 06:22:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:31,291 INFO L225 Difference]: With dead ends: 2401 [2021-11-20 06:22:31,291 INFO L226 Difference]: Without dead ends: 2401 [2021-11-20 06:22:31,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 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 06:22:31,292 INFO L933 BasicCegarLoop]: 1497 mSDtfsCounter, 9 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5971 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:31,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5971 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:22:31,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-11-20 06:22:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2401. [2021-11-20 06:22:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1744 states have (on average 1.8881880733944953) internal successors, (3293), 2385 states have internal predecessors, (3293), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-20 06:22:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3341 transitions. [2021-11-20 06:22:31,341 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3341 transitions. Word has length 66 [2021-11-20 06:22:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:31,342 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3341 transitions. [2021-11-20 06:22:31,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 06:22:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3341 transitions. [2021-11-20 06:22:31,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 06:22:31,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:31,343 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] [2021-11-20 06:22:31,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:31,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:31,557 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1919736862, now seen corresponding path program 1 times [2021-11-20 06:22:31,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:31,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747398585] [2021-11-20 06:22:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:31,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:31,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:31,560 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:31,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:22:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:31,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:22:31,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:31,933 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 06:22:31,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:32,186 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 06:22:32,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747398585] [2021-11-20 06:22:32,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747398585] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:22:32,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:22:32,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-20 06:22:32,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766268876] [2021-11-20 06:22:32,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:22:32,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:22:32,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:32,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:22:32,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:22:32,188 INFO L87 Difference]: Start difference. First operand 2401 states and 3341 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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 06:22:32,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:32,683 INFO L93 Difference]: Finished difference Result 2415 states and 3365 transitions. [2021-11-20 06:22:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:22:32,683 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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 68 [2021-11-20 06:22:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:32,689 INFO L225 Difference]: With dead ends: 2415 [2021-11-20 06:22:32,690 INFO L226 Difference]: Without dead ends: 2411 [2021-11-20 06:22:32,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:22:32,691 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 30 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7474 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:32,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 7474 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:22:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2021-11-20 06:22:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2407. [2021-11-20 06:22:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 1750 states have (on average 1.8862857142857143) internal successors, (3301), 2391 states have internal predecessors, (3301), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-20 06:22:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 3349 transitions. [2021-11-20 06:22:32,735 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 3349 transitions. Word has length 68 [2021-11-20 06:22:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:32,735 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 3349 transitions. [2021-11-20 06:22:32,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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 06:22:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 3349 transitions. [2021-11-20 06:22:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 06:22:32,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:32,736 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] [2021-11-20 06:22:32,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:32,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:32,949 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:32,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash -863686050, now seen corresponding path program 2 times [2021-11-20 06:22:32,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:32,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271324523] [2021-11-20 06:22:32,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:22:32,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:32,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:32,951 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:32,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 06:22:33,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:22:33,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:22:33,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:22:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:33,565 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 06:22:33,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:34,267 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 06:22:34,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:34,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271324523] [2021-11-20 06:22:34,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271324523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:22:34,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:22:34,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-20 06:22:34,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288439244] [2021-11-20 06:22:34,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:22:34,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:22:34,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:22:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:22:34,269 INFO L87 Difference]: Start difference. First operand 2407 states and 3349 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 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 06:22:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:36,427 INFO L93 Difference]: Finished difference Result 2435 states and 3413 transitions. [2021-11-20 06:22:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:22:36,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 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 72 [2021-11-20 06:22:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:36,435 INFO L225 Difference]: With dead ends: 2435 [2021-11-20 06:22:36,436 INFO L226 Difference]: Without dead ends: 2429 [2021-11-20 06:22:36,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=369, Invalid=687, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 06:22:36,437 INFO L933 BasicCegarLoop]: 1501 mSDtfsCounter, 74 mSDsluCounter, 11953 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13454 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:36,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 13454 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 06:22:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-11-20 06:22:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2419. [2021-11-20 06:22:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 1762 states have (on average 1.8819523269012486) internal successors, (3316), 2403 states have internal predecessors, (3316), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-20 06:22:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3364 transitions. [2021-11-20 06:22:36,485 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3364 transitions. Word has length 72 [2021-11-20 06:22:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:36,485 INFO L470 AbstractCegarLoop]: Abstraction has 2419 states and 3364 transitions. [2021-11-20 06:22:36,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 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 06:22:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3364 transitions. [2021-11-20 06:22:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:22:36,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:36,487 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] [2021-11-20 06:22:36,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:36,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:36,703 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -360284450, now seen corresponding path program 3 times [2021-11-20 06:22:36,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:36,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93257332] [2021-11-20 06:22:36,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:22:36,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:36,705 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:36,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 06:22:37,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 06:22:37,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:22:37,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:22:37,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:37,800 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 06:22:37,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:39,520 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 06:22:39,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:39,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93257332] [2021-11-20 06:22:39,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93257332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:22:39,520 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:22:39,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-20 06:22:39,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520492524] [2021-11-20 06:22:39,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:22:39,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 06:22:39,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 06:22:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 06:22:39,526 INFO L87 Difference]: Start difference. First operand 2419 states and 3364 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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 06:22:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:48,639 INFO L93 Difference]: Finished difference Result 2473 states and 3515 transitions. [2021-11-20 06:22:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 06:22:48,639 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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 80 [2021-11-20 06:22:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:48,646 INFO L225 Difference]: With dead ends: 2473 [2021-11-20 06:22:48,646 INFO L226 Difference]: Without dead ends: 2467 [2021-11-20 06:22:48,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 06:22:48,649 INFO L933 BasicCegarLoop]: 1508 mSDtfsCounter, 223 mSDsluCounter, 24032 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 25540 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:48,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 25540 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 06:22:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2021-11-20 06:22:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2443. [2021-11-20 06:22:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 1786 states have (on average 1.874020156774916) internal successors, (3347), 2427 states have internal predecessors, (3347), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-20 06:22:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3395 transitions. [2021-11-20 06:22:48,701 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3395 transitions. Word has length 80 [2021-11-20 06:22:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:48,701 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 3395 transitions. [2021-11-20 06:22:48,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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 06:22:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3395 transitions. [2021-11-20 06:22:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:22:48,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:48,703 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] [2021-11-20 06:22:48,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:48,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:48,917 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:22:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:48,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1450469410, now seen corresponding path program 4 times [2021-11-20 06:22:48,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:48,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120831034] [2021-11-20 06:22:48,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:22:48,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:48,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:48,921 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:48,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 06:22:49,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:22:49,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:22:49,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:22:49,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:50,639 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 06:22:50,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:55,019 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 06:22:55,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120831034] [2021-11-20 06:22:55,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120831034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:22:55,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:22:55,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-20 06:22:55,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156034422] [2021-11-20 06:22:55,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:22:55,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-20 06:22:55,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-20 06:22:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 06:22:55,024 INFO L87 Difference]: Start difference. First operand 2443 states and 3395 transitions. Second operand has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 66 states have internal predecessors, (127), 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 06:23:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:23:12,530 INFO L93 Difference]: Finished difference Result 2533 states and 3597 transitions. [2021-11-20 06:23:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-20 06:23:12,531 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 66 states have internal predecessors, (127), 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 96 [2021-11-20 06:23:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:23:12,539 INFO L225 Difference]: With dead ends: 2533 [2021-11-20 06:23:12,539 INFO L226 Difference]: Without dead ends: 2529 [2021-11-20 06:23:12,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=4454, Invalid=14452, Unknown=0, NotChecked=0, Total=18906 [2021-11-20 06:23:12,547 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 305 mSDsluCounter, 48616 mSDsCounter, 0 mSdLazyCounter, 4995 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 50141 SdHoareTripleChecker+Invalid, 5582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 4995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:23:12,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 50141 Invalid, 5582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [587 Valid, 4995 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2021-11-20 06:23:12,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2021-11-20 06:23:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2473. [2021-11-20 06:23:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1816 states have (on average 1.8683920704845816) internal successors, (3393), 2457 states have internal predecessors, (3393), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2021-11-20 06:23:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3441 transitions. [2021-11-20 06:23:12,605 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3441 transitions. Word has length 96 [2021-11-20 06:23:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:23:12,606 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 3441 transitions. [2021-11-20 06:23:12,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 66 states have internal predecessors, (127), 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 06:23:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3441 transitions. [2021-11-20 06:23:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-20 06:23:12,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:23:12,608 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] [2021-11-20 06:23:12,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:23:12,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:23:12,822 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-11-20 06:23:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:23:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 182176190, now seen corresponding path program 5 times [2021-11-20 06:23:12,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:23:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507785249] [2021-11-20 06:23:12,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:23:12,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:23:12,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:23:12,825 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:23:12,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ba1956-f3d7-4899-bb71-1a76ae3c6161/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 06:23:13,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-20 06:23:13,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:23:14,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-20 06:23:14,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:23:14,021 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 06:23:14,268 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:23:14,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-20 06:23:14,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 06:23:14,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22