./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.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_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/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_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/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_4c14848a-e63c-4187-aaf5-353b73357150/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 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:29:32,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:29:32,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:29:32,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:29:32,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:29:32,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:29:32,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:29:32,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:29:32,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:29:32,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:29:32,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:29:32,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:29:32,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:29:32,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:29:32,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:29:32,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:29:32,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:29:32,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:29:32,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:29:32,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:29:32,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:29:32,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:29:32,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:29:32,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:29:32,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:29:32,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:29:32,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:29:32,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:29:32,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:29:32,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:29:32,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:29:32,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:29:32,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:29:32,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:29:32,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:29:32,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:29:32,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:29:32,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:29:32,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:29:32,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:29:32,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:29:32,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:29:32,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:29:32,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:29:32,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:29:32,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:29:32,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:29:32,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:29:32,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:29:32,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:29:32,570 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:29:32,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:29:32,571 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:29:32,571 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:29:32,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:29:32,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:29:32,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:29:32,572 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:29:32,572 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:29:32,572 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:29:32,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:29:32,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:29:32,573 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:29:32,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:29:32,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:29:32,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:29:32,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:29:32,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:29:32,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:29:32,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:29:32,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:29:32,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:29:32,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:29:32,576 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_4c14848a-e63c-4187-aaf5-353b73357150/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 [2021-11-20 07:29:32,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:29:32,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:29:32,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:29:32,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:29:32,872 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:29:32,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-20 07:29:32,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/f83989db4/4f4e3a1aceaa48f1a9466afdbe4aab79/FLAG26f62c788 [2021-11-20 07:29:33,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:29:33,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-20 07:29:33,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/f83989db4/4f4e3a1aceaa48f1a9466afdbe4aab79/FLAG26f62c788 [2021-11-20 07:29:33,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/f83989db4/4f4e3a1aceaa48f1a9466afdbe4aab79 [2021-11-20 07:29:33,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:29:33,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:29:33,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:29:33,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:29:33,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:29:33,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:29:33" (1/1) ... [2021-11-20 07:29:33,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d068454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:33, skipping insertion in model container [2021-11-20 07:29:33,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:29:33" (1/1) ... [2021-11-20 07:29:33,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:29:33,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:29:34,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:29:34,150 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 07:29:34,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@362a1690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:34, skipping insertion in model container [2021-11-20 07:29:34,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:29:34,152 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 07:29:34,155 INFO L158 Benchmark]: Toolchain (without parser) took 398.85ms. Allocated memory is still 92.3MB. Free memory was 71.5MB in the beginning and 65.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 07:29:34,156 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory was 68.7MB in the beginning and 68.6MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:29:34,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.57ms. Allocated memory is still 92.3MB. Free memory was 71.3MB in the beginning and 65.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 07:29:34,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory was 68.7MB in the beginning and 68.6MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.57ms. Allocated memory is still 92.3MB. Free memory was 71.3MB in the beginning and 65.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 555]: 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_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/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_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/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_4c14848a-e63c-4187-aaf5-353b73357150/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 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:29:36,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:29:36,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:29:36,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:29:36,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:29:36,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:29:36,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:29:36,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:29:36,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:29:36,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:29:36,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:29:36,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:29:36,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:29:36,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:29:36,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:29:36,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:29:36,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:29:36,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:29:36,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:29:36,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:29:36,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:29:36,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:29:36,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:29:36,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:29:36,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:29:36,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:29:36,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:29:36,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:29:36,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:29:36,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:29:36,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:29:36,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:29:36,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:29:36,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:29:36,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:29:36,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:29:36,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:29:36,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:29:36,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:29:36,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:29:36,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:29:36,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 07:29:36,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:29:36,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:29:36,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:29:36,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:29:36,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:29:36,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:29:36,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:29:36,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:29:36,556 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:29:36,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:29:36,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:29:36,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:29:36,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:29:36,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:29:36,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:29:36,559 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:29:36,559 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:29:36,559 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:29:36,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:29:36,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:29:36,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:29:36,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:29:36,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:29:36,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:29:36,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:29:36,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:29:36,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:29:36,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:29:36,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:29:36,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:29:36,562 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:29:36,562 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:29:36,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:29:36,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:29:36,563 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_4c14848a-e63c-4187-aaf5-353b73357150/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 [2021-11-20 07:29:36,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:29:37,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:29:37,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:29:37,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:29:37,023 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:29:37,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-20 07:29:37,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/100192d3b/63ce6bf75e7a46649f520f452ea95187/FLAGf84209952 [2021-11-20 07:29:37,667 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:29:37,668 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-20 07:29:37,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/100192d3b/63ce6bf75e7a46649f520f452ea95187/FLAGf84209952 [2021-11-20 07:29:38,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/data/100192d3b/63ce6bf75e7a46649f520f452ea95187 [2021-11-20 07:29:38,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:29:38,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:29:38,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:29:38,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:29:38,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:29:38,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b37843b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38, skipping insertion in model container [2021-11-20 07:29:38,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:29:38,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:29:38,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:29:38,638 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:29:38,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:29:38,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:29:38,694 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:29:38,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:29:38,762 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:29:38,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38 WrapperNode [2021-11-20 07:29:38,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:29:38,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:29:38,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:29:38,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:29:38,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,813 INFO L137 Inliner]: procedures = 129, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2021-11-20 07:29:38,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:29:38,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:29:38,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:29:38,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:29:38,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:29:38,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:29:38,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:29:38,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:29:38,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (1/1) ... [2021-11-20 07:29:38,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:29:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:29:38,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:29:38,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:29:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:29:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:29:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:29:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:29:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:29:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:29:38,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:29:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:29:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:29:38,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:29:38,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:29:39,140 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:29:39,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:29:39,668 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:29:39,675 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:29:39,675 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:29:39,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:29:39 BoogieIcfgContainer [2021-11-20 07:29:39,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:29:39,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:29:39,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:29:39,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:29:39,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:29:38" (1/3) ... [2021-11-20 07:29:39,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa0cb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:29:39, skipping insertion in model container [2021-11-20 07:29:39,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:29:38" (2/3) ... [2021-11-20 07:29:39,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa0cb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:29:39, skipping insertion in model container [2021-11-20 07:29:39,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:29:39" (3/3) ... [2021-11-20 07:29:39,685 INFO L111 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04-2.i [2021-11-20 07:29:39,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:29:39,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-20 07:29:39,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:29:39,741 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 07:29:39,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-20 07:29:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 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 07:29:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 07:29:39,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:39,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 07:29:39,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2021-11-20 07:29:39,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:39,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550373598] [2021-11-20 07:29:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:39,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:39,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:39,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:39,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:29:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:39,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:29:39,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:39,928 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 07:29:39,976 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 07:29:39,977 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 18 treesize of output 23 [2021-11-20 07:29:40,013 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 07:29:40,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:40,047 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 07:29:40,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:40,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550373598] [2021-11-20 07:29:40,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550373598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:40,049 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:40,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 07:29:40,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729276286] [2021-11-20 07:29:40,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:40,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:29:40,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:29:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:29:40,114 INFO L87 Difference]: Start difference. First operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 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) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 07:29:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:40,443 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-11-20 07:29:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:29:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 4 [2021-11-20 07:29:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:40,455 INFO L225 Difference]: With dead ends: 158 [2021-11-20 07:29:40,455 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 07:29:40,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:29:40,460 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 199 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:40,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 110 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2021-11-20 07:29:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 07:29:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 98. [2021-11-20 07:29:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 97 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 07:29:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-11-20 07:29:40,500 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 4 [2021-11-20 07:29:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:40,500 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-11-20 07:29:40,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 07:29:40,501 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-11-20 07:29:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 07:29:40,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:40,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 07:29:40,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:40,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:40,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:40,714 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2021-11-20 07:29:40,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:40,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184668706] [2021-11-20 07:29:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:40,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:40,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:40,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:40,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:29:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:40,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:29:40,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:40,811 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 07:29:40,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:29:40,881 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:29:40,882 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 28 treesize of output 30 [2021-11-20 07:29:40,890 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:29:40,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 07:29:40,924 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 07:29:40,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:41,148 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 07:29:41,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:41,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184668706] [2021-11-20 07:29:41,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184668706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:41,149 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:41,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:29:41,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682617814] [2021-11-20 07:29:41,150 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:41,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:29:41,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:29:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:29:41,152 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 07:29:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:41,719 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2021-11-20 07:29:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:29:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 4 [2021-11-20 07:29:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:41,721 INFO L225 Difference]: With dead ends: 100 [2021-11-20 07:29:41,721 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 07:29:41,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:29:41,723 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:41,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 204 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 81 Unchecked, 0.5s Time] [2021-11-20 07:29:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 07:29:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-11-20 07:29:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 58 states have (on average 1.896551724137931) internal successors, (110), 99 states have internal predecessors, (110), 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 07:29:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2021-11-20 07:29:41,743 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 4 [2021-11-20 07:29:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:41,743 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2021-11-20 07:29:41,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 07:29:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2021-11-20 07:29:41,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:29:41,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:41,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:29:41,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:41,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:41,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2021-11-20 07:29:41,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:41,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67670390] [2021-11-20 07:29:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:41,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:41,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:41,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:41,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:29:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:42,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:29:42,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:42,016 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 07:29:42,026 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 07:29:42,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:42,038 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 07:29:42,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:42,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67670390] [2021-11-20 07:29:42,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67670390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:42,039 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:42,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:29:42,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814253114] [2021-11-20 07:29:42,040 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:42,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:29:42,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:42,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:29:42,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:29:42,041 INFO L87 Difference]: Start difference. First operand 100 states and 110 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 07:29:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:42,249 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-11-20 07:29:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:29:42,250 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 07:29:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:42,251 INFO L225 Difference]: With dead ends: 143 [2021-11-20 07:29:42,251 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 07:29:42,252 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 07:29:42,253 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 81 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:42,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 88 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:29:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 07:29:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2021-11-20 07:29:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.8448275862068966) internal successors, (107), 97 states have internal predecessors, (107), 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 07:29:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2021-11-20 07:29:42,263 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 5 [2021-11-20 07:29:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:42,263 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2021-11-20 07:29:42,264 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 07:29:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2021-11-20 07:29:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:29:42,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:42,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:29:42,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:42,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:42,483 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2021-11-20 07:29:42,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:42,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544950228] [2021-11-20 07:29:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:42,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:42,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:42,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:29:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:42,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:29:42,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:42,557 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 07:29:42,598 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 07:29:42,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:42,662 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 07:29:42,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:42,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544950228] [2021-11-20 07:29:42,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544950228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:42,663 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:42,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:29:42,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388220805] [2021-11-20 07:29:42,664 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:42,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:29:42,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:29:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:29:42,665 INFO L87 Difference]: Start difference. First operand 98 states and 107 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 07:29:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:43,073 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2021-11-20 07:29:43,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:29:43,074 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 07:29:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:43,075 INFO L225 Difference]: With dead ends: 163 [2021-11-20 07:29:43,075 INFO L226 Difference]: Without dead ends: 163 [2021-11-20 07:29:43,076 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 07:29:43,077 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 155 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:43,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 109 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:29:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-20 07:29:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 101. [2021-11-20 07:29:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 100 states have internal predecessors, (111), 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 07:29:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-11-20 07:29:43,091 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 5 [2021-11-20 07:29:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:43,092 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-11-20 07:29:43,092 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 07:29:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-11-20 07:29:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:29:43,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:43,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:43,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:43,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:43,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash 234239181, now seen corresponding path program 1 times [2021-11-20 07:29:43,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:43,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413072737] [2021-11-20 07:29:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:43,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:43,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:43,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:29:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:43,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:29:43,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:43,390 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 07:29:43,414 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 07:29:43,414 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 15 treesize of output 20 [2021-11-20 07:29:43,432 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 07:29:43,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:43,460 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 07:29:43,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:43,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413072737] [2021-11-20 07:29:43,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413072737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:43,461 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:43,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:29:43,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751850573] [2021-11-20 07:29:43,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:43,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:29:43,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:29:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:29:43,463 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 07:29:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:43,698 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2021-11-20 07:29:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:29:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-11-20 07:29:43,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:43,700 INFO L225 Difference]: With dead ends: 150 [2021-11-20 07:29:43,700 INFO L226 Difference]: Without dead ends: 150 [2021-11-20 07:29:43,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 2 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 07:29:43,701 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 75 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:43,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 153 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:29:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-20 07:29:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2021-11-20 07:29:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 96 states have internal predecessors, (106), 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 07:29:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-11-20 07:29:43,710 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 9 [2021-11-20 07:29:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:43,711 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-11-20 07:29:43,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 07:29:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-11-20 07:29:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:29:43,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:43,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:43,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:43,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:43,927 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 234239182, now seen corresponding path program 1 times [2021-11-20 07:29:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:43,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276972346] [2021-11-20 07:29:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:43,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:43,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:43,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:43,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:29:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:44,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:29:44,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:44,043 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 07:29:44,052 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 07:29:44,110 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:29:44,111 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 24 treesize of output 26 [2021-11-20 07:29:44,117 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:29:44,117 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 23 treesize of output 19 [2021-11-20 07:29:44,146 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 07:29:44,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:29:46,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276972346] [2021-11-20 07:29:46,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276972346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:46,411 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:46,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:29:46,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526021161] [2021-11-20 07:29:46,412 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:46,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:29:46,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:29:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 07:29:46,413 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:29:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:46,963 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2021-11-20 07:29:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:29:46,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 07:29:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:46,965 INFO L225 Difference]: With dead ends: 163 [2021-11-20 07:29:46,965 INFO L226 Difference]: Without dead ends: 163 [2021-11-20 07:29:46,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 07:29:46,966 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 77 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:46,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 275 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 119 Unchecked, 0.5s Time] [2021-11-20 07:29:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-20 07:29:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 97. [2021-11-20 07:29:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.671875) internal successors, (107), 96 states have internal predecessors, (107), 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 07:29:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2021-11-20 07:29:46,974 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 9 [2021-11-20 07:29:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:46,974 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2021-11-20 07:29:46,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:29:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2021-11-20 07:29:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:29:46,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:46,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:46,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:47,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:47,176 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:47,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1328494166, now seen corresponding path program 1 times [2021-11-20 07:29:47,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:47,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852677088] [2021-11-20 07:29:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:47,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:47,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:47,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:47,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:29:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:47,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:29:47,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:47,280 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 07:29:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:29:47,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:47,423 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 07:29:47,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:47,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852677088] [2021-11-20 07:29:47,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852677088] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:47,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:47,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:29:47,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812804018] [2021-11-20 07:29:47,424 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:47,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:29:47,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:29:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:29:47,425 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 07:29:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:48,091 INFO L93 Difference]: Finished difference Result 217 states and 233 transitions. [2021-11-20 07:29:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:29:48,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 10 [2021-11-20 07:29:48,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:48,094 INFO L225 Difference]: With dead ends: 217 [2021-11-20 07:29:48,094 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 07:29:48,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 07:29:48,095 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 143 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:48,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 248 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:29:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 07:29:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 96. [2021-11-20 07:29:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.640625) internal successors, (105), 95 states have internal predecessors, (105), 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 07:29:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2021-11-20 07:29:48,102 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 10 [2021-11-20 07:29:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:48,102 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2021-11-20 07:29:48,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 07:29:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2021-11-20 07:29:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:29:48,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:48,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:48,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:48,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:48,314 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:48,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1764814573, now seen corresponding path program 1 times [2021-11-20 07:29:48,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:48,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289264170] [2021-11-20 07:29:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:48,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:48,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:48,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:48,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:29:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:48,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:29:48,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:29:48,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:48,685 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 07:29:48,754 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 07:29:48,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:48,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289264170] [2021-11-20 07:29:48,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289264170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:48,754 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:48,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 07:29:48,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877066020] [2021-11-20 07:29:48,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:48,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:29:48,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:48,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:29:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:29:48,756 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 07:29:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:48,994 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-11-20 07:29:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:29:49,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 07:29:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:49,001 INFO L225 Difference]: With dead ends: 95 [2021-11-20 07:29:49,002 INFO L226 Difference]: Without dead ends: 95 [2021-11-20 07:29:49,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:29:49,003 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 326 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:49,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 56 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:29:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-20 07:29:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-20 07:29:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.609375) internal successors, (103), 94 states have internal predecessors, (103), 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 07:29:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2021-11-20 07:29:49,008 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 11 [2021-11-20 07:29:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:49,009 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2021-11-20 07:29:49,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 07:29:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2021-11-20 07:29:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:29:49,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:49,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:49,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:49,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:49,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1102419536, now seen corresponding path program 1 times [2021-11-20 07:29:49,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:49,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776993737] [2021-11-20 07:29:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:49,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:49,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:49,222 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:49,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:29:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:49,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:29:49,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:29:49,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:49,438 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 07:29:49,474 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 07:29:49,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:49,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776993737] [2021-11-20 07:29:49,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776993737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:49,475 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:49,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:29:49,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69687078] [2021-11-20 07:29:49,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:49,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:29:49,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:49,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:29:49,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:29:49,476 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 07:29:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:49,638 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2021-11-20 07:29:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:29:49,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 07:29:49,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:49,640 INFO L225 Difference]: With dead ends: 154 [2021-11-20 07:29:49,640 INFO L226 Difference]: Without dead ends: 154 [2021-11-20 07:29:49,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 07:29:49,642 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 155 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:49,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 252 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:29:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-20 07:29:49,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2021-11-20 07:29:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.596774193548387) internal successors, (99), 91 states have internal predecessors, (99), 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 07:29:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-11-20 07:29:49,649 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 12 [2021-11-20 07:29:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:49,649 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-11-20 07:29:49,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 07:29:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-11-20 07:29:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 07:29:49,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:49,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:49,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-20 07:29:49,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:49,861 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash 184732728, now seen corresponding path program 1 times [2021-11-20 07:29:49,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:49,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617126800] [2021-11-20 07:29:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:49,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:49,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:49,863 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:49,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:29:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:49,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:29:49,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:49,937 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 07:29:49,954 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 07:29:49,989 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 07:29:50,005 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 07:29:50,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:50,059 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 07:29:50,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:50,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617126800] [2021-11-20 07:29:50,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617126800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:50,060 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:50,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:29:50,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855069230] [2021-11-20 07:29:50,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:50,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:29:50,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:50,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:29:50,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:29:50,061 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 07:29:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:50,546 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-11-20 07:29:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:29:50,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 13 [2021-11-20 07:29:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:50,548 INFO L225 Difference]: With dead ends: 101 [2021-11-20 07:29:50,548 INFO L226 Difference]: Without dead ends: 101 [2021-11-20 07:29:50,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:29:50,549 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:50,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 217 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:29:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-20 07:29:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2021-11-20 07:29:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.6) internal successors, (104), 94 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 07:29:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-11-20 07:29:50,553 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 13 [2021-11-20 07:29:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:50,553 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-11-20 07:29:50,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 07:29:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-11-20 07:29:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 07:29:50,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:50,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:50,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:50,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:50,761 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:50,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash 184732729, now seen corresponding path program 1 times [2021-11-20 07:29:50,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:50,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126498125] [2021-11-20 07:29:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:50,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:50,764 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:50,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:29:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:50,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:29:50,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:50,865 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 07:29:50,893 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 07:29:50,904 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 07:29:51,007 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 07:29:51,011 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 07:29:51,036 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 07:29:51,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:51,579 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 07:29:51,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:51,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126498125] [2021-11-20 07:29:51,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126498125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:51,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:51,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 07:29:51,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986980367] [2021-11-20 07:29:51,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:51,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:29:51,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:29:51,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:29:51,582 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 07:29:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:52,864 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-11-20 07:29:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:29:52,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 07:29:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:52,865 INFO L225 Difference]: With dead ends: 96 [2021-11-20 07:29:52,866 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 07:29:52,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:29:52,866 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 5 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:52,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 407 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:29:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 07:29:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-11-20 07:29:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 94 states have internal predecessors, (102), 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 07:29:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-11-20 07:29:52,870 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 13 [2021-11-20 07:29:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:52,871 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-11-20 07:29:52,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 07:29:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-11-20 07:29:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:29:52,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:52,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:52,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:53,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:53,079 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:53,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 896280002, now seen corresponding path program 1 times [2021-11-20 07:29:53,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:53,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006517341] [2021-11-20 07:29:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:53,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:53,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:53,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:53,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:29:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:53,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:29:53,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:53,292 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 07:29:53,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:53,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:29:53,464 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 22 treesize of output 26 [2021-11-20 07:29:53,616 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 07:29:53,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:53,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006517341] [2021-11-20 07:29:53,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006517341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:53,616 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:53,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 07:29:53,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961220415] [2021-11-20 07:29:53,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:53,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:29:53,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:29:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:29:53,618 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 07:29:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:53,804 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2021-11-20 07:29:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:29:53,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 14 [2021-11-20 07:29:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:53,805 INFO L225 Difference]: With dead ends: 89 [2021-11-20 07:29:53,805 INFO L226 Difference]: Without dead ends: 89 [2021-11-20 07:29:53,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:29:53,806 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 355 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:53,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 51 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:29:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-20 07:29:53,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-11-20 07:29:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 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 07:29:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-11-20 07:29:53,808 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 14 [2021-11-20 07:29:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:53,809 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-11-20 07:29:53,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 07:29:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-11-20 07:29:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:29:53,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:53,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:53,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:54,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:54,011 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1897191058, now seen corresponding path program 1 times [2021-11-20 07:29:54,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:54,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906523771] [2021-11-20 07:29:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:54,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:54,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:54,013 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:54,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 07:29:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:54,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:29:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:54,155 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:29:54,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-20 07:29:54,318 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 07:29:54,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:58,438 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 07:29:58,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:58,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906523771] [2021-11-20 07:29:58,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906523771] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:58,439 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:58,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 07:29:58,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938124853] [2021-11-20 07:29:58,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:58,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:29:58,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:29:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=0, Total=20 [2021-11-20 07:29:58,440 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 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 07:29:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:58,456 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2021-11-20 07:29:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:29:58,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 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 15 [2021-11-20 07:29:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:58,458 INFO L225 Difference]: With dead ends: 93 [2021-11-20 07:29:58,458 INFO L226 Difference]: Without dead ends: 93 [2021-11-20 07:29:58,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=0, Total=20 [2021-11-20 07:29:58,460 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:58,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 116 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2021-11-20 07:29:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-20 07:29:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2021-11-20 07:29:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 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 07:29:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-11-20 07:29:58,463 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 15 [2021-11-20 07:29:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:58,464 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-11-20 07:29:58,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 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 07:29:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-11-20 07:29:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:29:58,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:58,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:58,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:58,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:58,677 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash -734113802, now seen corresponding path program 1 times [2021-11-20 07:29:58,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:58,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769743471] [2021-11-20 07:29:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:58,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:58,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:58,679 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:58,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 07:29:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:58,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:29:58,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:58,897 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 16 treesize of output 12 [2021-11-20 07:29:58,927 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 16 treesize of output 8 [2021-11-20 07:29:58,946 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 07:29:58,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:58,975 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 30 treesize of output 26 [2021-11-20 07:29:59,107 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 07:29:59,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:59,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769743471] [2021-11-20 07:29:59,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769743471] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:29:59,108 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:29:59,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 07:29:59,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252165532] [2021-11-20 07:29:59,109 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:29:59,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:29:59,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:29:59,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:29:59,110 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 07:29:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:59,405 INFO L93 Difference]: Finished difference Result 133 states and 141 transitions. [2021-11-20 07:29:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:29:59,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-11-20 07:29:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:59,407 INFO L225 Difference]: With dead ends: 133 [2021-11-20 07:29:59,407 INFO L226 Difference]: Without dead ends: 133 [2021-11-20 07:29:59,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:29:59,408 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 156 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:59,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 174 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:29:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-20 07:29:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 87. [2021-11-20 07:29:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 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 07:29:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-11-20 07:29:59,411 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 17 [2021-11-20 07:29:59,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:59,412 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-11-20 07:29:59,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 07:29:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-11-20 07:29:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:29:59,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:59,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:59,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:29:59,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:59,624 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:29:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash -734113798, now seen corresponding path program 1 times [2021-11-20 07:29:59,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:59,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000597179] [2021-11-20 07:29:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:59,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:59,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:59,627 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:59,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 07:29:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:59,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:29:59,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:59,738 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 07:29:59,881 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 20 treesize of output 16 [2021-11-20 07:29:59,926 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 21 treesize of output 13 [2021-11-20 07:29:59,941 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 07:29:59,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:59,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-20 07:30:00,284 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 07:30:00,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:30:00,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000597179] [2021-11-20 07:30:00,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000597179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:30:00,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:30:00,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 07:30:00,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57349304] [2021-11-20 07:30:00,285 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:30:00,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:30:00,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:30:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:30:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:30:00,287 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 07:30:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:30:00,765 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2021-11-20 07:30:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:30:00,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 17 [2021-11-20 07:30:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:30:00,766 INFO L225 Difference]: With dead ends: 127 [2021-11-20 07:30:00,766 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 07:30:00,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:30:00,767 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 98 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:30:00,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 173 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 28 Unchecked, 0.4s Time] [2021-11-20 07:30:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 07:30:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 89. [2021-11-20 07:30:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.476923076923077) internal successors, (96), 88 states have internal predecessors, (96), 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 07:30:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2021-11-20 07:30:00,771 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 17 [2021-11-20 07:30:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:30:00,772 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2021-11-20 07:30:00,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 07:30:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2021-11-20 07:30:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:30:00,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:00,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:00,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-20 07:30:00,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:30:00,984 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:30:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash -734113797, now seen corresponding path program 1 times [2021-11-20 07:30:00,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:30:00,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60740036] [2021-11-20 07:30:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:00,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:30:00,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:30:00,985 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:30:00,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 07:30:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:01,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:30:01,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:30:01,063 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 07:30:01,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:30:01,245 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 17 treesize of output 13 [2021-11-20 07:30:01,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 07:30:01,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-20 07:30:01,339 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 07:30:01,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:30:01,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-11-20 07:30:01,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:30:01,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:30:01,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:30:01,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:30:01,867 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 07:30:01,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:30:01,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60740036] [2021-11-20 07:30:01,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60740036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:30:01,868 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:30:01,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 07:30:01,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695259570] [2021-11-20 07:30:01,868 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:30:01,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:30:01,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:30:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:30:01,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:30:01,869 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 07:30:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:30:03,373 INFO L93 Difference]: Finished difference Result 223 states and 237 transitions. [2021-11-20 07:30:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:30:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 17 [2021-11-20 07:30:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:30:03,376 INFO L225 Difference]: With dead ends: 223 [2021-11-20 07:30:03,376 INFO L226 Difference]: Without dead ends: 223 [2021-11-20 07:30:03,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:30:03,377 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 329 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:30:03,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 261 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:30:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-20 07:30:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 89. [2021-11-20 07:30:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 88 states have internal predecessors, (95), 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 07:30:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-11-20 07:30:03,381 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 17 [2021-11-20 07:30:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:30:03,381 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-11-20 07:30:03,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 07:30:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2021-11-20 07:30:03,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:30:03,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:03,382 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:03,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:30:03,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:30:03,593 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:30:03,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash 50233868, now seen corresponding path program 1 times [2021-11-20 07:30:03,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:30:03,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702685009] [2021-11-20 07:30:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:03,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:30:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:30:03,595 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:30:03,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 07:30:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:30:03,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:30:03,705 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 07:30:03,746 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:30:03,746 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 07:30:03,801 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 07:30:04,146 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-20 07:30:04,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 48 [2021-11-20 07:30:04,289 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 51 treesize of output 33 [2021-11-20 07:30:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:30:04,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:30:10,628 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_create_data_~counter~0#1| (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse0 (let ((.cse1 (bvmul |ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse1) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse1 (_ bv1 32)) v_DerPreprocessor_2) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse1) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse1) v_DerPreprocessor_4)))) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse2))))))) (_ bv1 1)))) is different from false [2021-11-20 07:30:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-20 07:30:17,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:30:17,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702685009] [2021-11-20 07:30:17,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702685009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:30:17,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:30:17,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-20 07:30:17,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308364270] [2021-11-20 07:30:17,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:30:17,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:30:17,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:30:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:30:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=4, NotChecked=20, Total=156 [2021-11-20 07:30:17,447 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 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 07:30:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:30:17,837 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2021-11-20 07:30:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:30:17,838 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 07:30:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:30:17,839 INFO L225 Difference]: With dead ends: 136 [2021-11-20 07:30:17,839 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 07:30:17,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=4, NotChecked=20, Total=156 [2021-11-20 07:30:17,840 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 59 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:30:17,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 387 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 223 Unchecked, 0.3s Time] [2021-11-20 07:30:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 07:30:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 88. [2021-11-20 07:30:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 87 states have internal predecessors, (94), 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 07:30:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2021-11-20 07:30:17,844 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 18 [2021-11-20 07:30:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:30:17,844 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2021-11-20 07:30:17,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 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 07:30:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2021-11-20 07:30:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:30:17,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:17,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:17,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:30:18,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:30:18,057 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-20 07:30:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash 50233869, now seen corresponding path program 1 times [2021-11-20 07:30:18,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:30:18,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362054233] [2021-11-20 07:30:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:18,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:30:18,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:30:18,059 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:30:18,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c14848a-e63c-4187-aaf5-353b73357150/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 07:30:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:18,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:30:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:30:18,162 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 07:30:18,189 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:30:18,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-20 07:30:18,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 07:30:18,227 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 07:30:18,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 07:30:18,581 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-20 07:30:18,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 251 treesize of output 126 [2021-11-20 07:30:18,647 INFO L354 Elim1Store]: treesize reduction 714, result has 1.2 percent of original size [2021-11-20 07:30:18,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 34 [2021-11-20 07:30:18,784 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 49 treesize of output 31 [2021-11-20 07:30:18,789 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 28 treesize of output 16 [2021-11-20 07:30:18,830 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 07:30:18,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:30:22,169 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse5 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (let ((.cse0 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse5)) (.cse1 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse5 (_ bv1 32))) (.cse2 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse5)) (.cse3 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse5)) (.cse4 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) .cse0 v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4) .cse5) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) .cse0 v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse7 (bvmul |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv4 32)))) (let ((.cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base|) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse7) v_DerPreprocessor_5) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| .cse7 (_ bv1 32)) v_DerPreprocessor_6) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32) .cse7) v_DerPreprocessor_7) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32) .cse7) v_DerPreprocessor_8)) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32))))) (bvule (bvadd (_ bv4 32) .cse6 .cse7) (bvadd (_ bv8 32) .cse6 .cse7)))))) is different from false [2021-11-20 07:30:39,496 WARN L227 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:30:41,644 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse4 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (.cse1 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv1 32))) (.cse2 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32))) (.cse3 (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem8#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse5 (let ((.cse7 (bvadd |c_ULTIMATE.start_create_data_~data~0#1.offset| (_ bv4 32)))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (store |c_#memory_$Pointer$.offset| .cse6 (store (store (store (store (select |c_#memory_$Pointer$.offset| .cse6) |ULTIMATE.start_create_data_#t~mem8#1.offset| v_DerPreprocessor_5) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv1 32)) v_DerPreprocessor_6) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv2 32)) v_DerPreprocessor_7) (bvadd |ULTIMATE.start_create_data_#t~mem8#1.offset| (_ bv3 32)) v_DerPreprocessor_8))) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7)))) (bvule (bvadd (_ bv4 32) .cse5) (bvadd (_ bv8 32) .cse5))))) is different from false