./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:22:04,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:22:04,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:22:04,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:22:04,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:22:04,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:22:04,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:22:04,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:22:04,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:22:04,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:22:04,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:22:04,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:22:04,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:22:04,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:22:04,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:22:04,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:22:04,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:22:04,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:22:04,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:22:04,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:22:04,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:22:04,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:22:04,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:22:04,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:22:04,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:22:04,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:22:04,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:22:04,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:22:04,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:22:04,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:22:04,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:22:04,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:22:04,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:22:04,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:22:04,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:22:04,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:22:04,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:22:04,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:22:04,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:22:04,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:22:04,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:22:04,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:22:04,499 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:22:04,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:22:04,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:22:04,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:22:04,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:22:04,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:22:04,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:22:04,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:22:04,516 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:22:04,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:22:04,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:22:04,519 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:22:04,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:22:04,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:22:04,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:22:04,520 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:22:04,520 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:22:04,521 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:22:04,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:22:04,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:22:04,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:22:04,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:22:04,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:22:04,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:22:04,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:22:04,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:22:04,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:22:04,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:22:04,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:22:04,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:22:04,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:22:04,534 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_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c [2021-11-19 05:22:04,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:22:04,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:22:04,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:22:04,894 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:22:04,903 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:22:04,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2021-11-19 05:22:05,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/38475ea92/820bfe7559f547c5a955f455ef4d3df2/FLAG928d237b4 [2021-11-19 05:22:05,679 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:22:05,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2021-11-19 05:22:05,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/38475ea92/820bfe7559f547c5a955f455ef4d3df2/FLAG928d237b4 [2021-11-19 05:22:05,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/38475ea92/820bfe7559f547c5a955f455ef4d3df2 [2021-11-19 05:22:05,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:22:05,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:22:05,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:22:05,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:22:05,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:22:05,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:05" (1/1) ... [2021-11-19 05:22:05,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673ae86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:05, skipping insertion in model container [2021-11-19 05:22:05,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:05" (1/1) ... [2021-11-19 05:22:05,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:22:05,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:22:06,523 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i[33022,33035] [2021-11-19 05:22:06,812 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:22:06,831 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 05:22:06,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f66c28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:06, skipping insertion in model container [2021-11-19 05:22:06,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:22:06,832 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 05:22:06,834 INFO L158 Benchmark]: Toolchain (without parser) took 990.11ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 74.2MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:22:06,835 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 58.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:22:06,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 986.47ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 74.5MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:22:06,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 58.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 986.47ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 74.5MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:22:09,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:22:09,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:22:09,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:22:09,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:22:09,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:22:09,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:22:09,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:22:09,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:22:09,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:22:09,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:22:09,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:22:09,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:22:09,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:22:09,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:22:09,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:22:09,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:22:09,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:22:09,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:22:09,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:22:09,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:22:09,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:22:09,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:22:09,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:22:09,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:22:09,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:22:09,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:22:09,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:22:09,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:22:09,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:22:09,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:22:09,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:22:09,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:22:09,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:22:09,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:22:09,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:22:09,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:22:09,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:22:09,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:22:09,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:22:09,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:22:09,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:22:09,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:22:09,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:22:09,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:22:09,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:22:09,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:22:09,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:22:09,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:22:09,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:22:09,532 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:22:09,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:22:09,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:22:09,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:22:09,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:22:09,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:22:09,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:22:09,536 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:22:09,536 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:22:09,536 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:22:09,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:22:09,537 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:22:09,537 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:22:09,537 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:22:09,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:22:09,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:22:09,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:22:09,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:22:09,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:22:09,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:22:09,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:22:09,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:22:09,541 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:22:09,541 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:22:09,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:22:09,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:22:09,542 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_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c [2021-11-19 05:22:09,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:22:09,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:22:09,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:22:09,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:22:09,976 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:22:09,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2021-11-19 05:22:10,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/b3e0a6ce7/e1773569ec14451698d2b00d68a72966/FLAG2a9c8efd7 [2021-11-19 05:22:10,844 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:22:10,845 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2021-11-19 05:22:10,866 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/b3e0a6ce7/e1773569ec14451698d2b00d68a72966/FLAG2a9c8efd7 [2021-11-19 05:22:10,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/data/b3e0a6ce7/e1773569ec14451698d2b00d68a72966 [2021-11-19 05:22:10,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:22:10,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:22:10,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:22:10,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:22:10,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:22:10,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:10" (1/1) ... [2021-11-19 05:22:10,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d7f274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:10, skipping insertion in model container [2021-11-19 05:22:10,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:10" (1/1) ... [2021-11-19 05:22:11,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:22:11,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:22:11,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i[33022,33035] [2021-11-19 05:22:12,068 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:22:12,080 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 05:22:12,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:22:12,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i[33022,33035] [2021-11-19 05:22:12,311 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:22:12,319 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:22:12,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i[33022,33035] [2021-11-19 05:22:12,573 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:22:12,630 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:22:12,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12 WrapperNode [2021-11-19 05:22:12,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:22:12,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:22:12,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:22:12,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:22:12,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:22:12,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:22:12,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:22:12,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:22:12,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (1/1) ... [2021-11-19 05:22:12,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:22:12,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:22:12,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:22:12,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:22:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:22:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:22:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:22:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:22:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:22:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:22:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:22:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:22:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:22:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:22:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 05:22:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:22:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 05:22:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 05:22:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 05:22:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 05:22:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 05:22:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 05:22:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 05:22:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 05:22:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 05:22:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 05:22:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 05:22:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 05:22:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 05:22:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 05:22:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 05:22:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 05:22:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 05:22:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 05:22:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 05:22:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 05:22:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 05:22:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 05:22:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 05:22:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 05:22:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:22:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:22:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:22:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:22:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:22:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:22:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:22:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:22:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:22:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:22:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:22:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:22:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:22:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:22:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:22:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:22:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:22:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:22:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 05:22:13,591 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:22:13,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:22:13,733 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:22:24,913 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:22:24,948 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:22:24,948 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-19 05:22:24,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:24 BoogieIcfgContainer [2021-11-19 05:22:24,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:22:24,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:22:24,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:22:24,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:22:24,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:10" (1/3) ... [2021-11-19 05:22:24,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eddc964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:24, skipping insertion in model container [2021-11-19 05:22:24,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:12" (2/3) ... [2021-11-19 05:22:24,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eddc964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:24, skipping insertion in model container [2021-11-19 05:22:24,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:24" (3/3) ... [2021-11-19 05:22:24,971 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-2.i [2021-11-19 05:22:24,977 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:22:24,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2021-11-19 05:22:25,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:22:25,048 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:22:25,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2021-11-19 05:22:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 2264 states, 1153 states have (on average 2.2133564614050303) internal successors, (2552), 2246 states have internal predecessors, (2552), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 05:22:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:22:25,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:22:25,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:22:25,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:22:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:22:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2126582278, now seen corresponding path program 1 times [2021-11-19 05:22:25,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:22:25,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135249007] [2021-11-19 05:22:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:22:25,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:22:25,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:22:25,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:22:25,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:22:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:22:25,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:22:25,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:22:25,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:22:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:25,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:22:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:25,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:22:25,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135249007] [2021-11-19 05:22:25,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135249007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:22:25,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:22:25,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:22:25,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054417972] [2021-11-19 05:22:25,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:22:25,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:22:25,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:22:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:22:25,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:22:25,630 INFO L87 Difference]: Start difference. First operand has 2264 states, 1153 states have (on average 2.2133564614050303) internal successors, (2552), 2246 states have internal predecessors, (2552), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:22:30,476 INFO L93 Difference]: Finished difference Result 2939 states and 3125 transitions. [2021-11-19 05:22:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:22:30,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:22:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:22:30,523 INFO L225 Difference]: With dead ends: 2939 [2021-11-19 05:22:30,523 INFO L226 Difference]: Without dead ends: 2936 [2021-11-19 05:22:30,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:22:30,529 INFO L933 BasicCegarLoop]: 1399 mSDtfsCounter, 2142 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:22:30,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1879 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-19 05:22:30,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2021-11-19 05:22:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2405. [2021-11-19 05:22:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 1319 states have (on average 2.050796057619409) internal successors, (2705), 2386 states have internal predecessors, (2705), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:22:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 2740 transitions. [2021-11-19 05:22:30,694 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 2740 transitions. Word has length 7 [2021-11-19 05:22:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:22:30,695 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 2740 transitions. [2021-11-19 05:22:30,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 2740 transitions. [2021-11-19 05:22:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:22:30,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:22:30,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:22:30,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 05:22:30,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:22:30,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:22:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:22:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2126582279, now seen corresponding path program 1 times [2021-11-19 05:22:30,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:22:30,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960215831] [2021-11-19 05:22:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:22:30,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:22:30,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:22:30,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:22:30,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:22:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:22:31,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:22:31,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:22:31,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:22:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:31,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:22:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:31,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:22:31,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960215831] [2021-11-19 05:22:31,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960215831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:22:31,254 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:22:31,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:22:31,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801353548] [2021-11-19 05:22:31,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:22:31,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:22:31,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:22:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:22:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:22:31,257 INFO L87 Difference]: Start difference. First operand 2405 states and 2740 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:22:43,676 INFO L93 Difference]: Finished difference Result 3705 states and 4151 transitions. [2021-11-19 05:22:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:22:43,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:22:43,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:22:43,700 INFO L225 Difference]: With dead ends: 3705 [2021-11-19 05:22:43,700 INFO L226 Difference]: Without dead ends: 3705 [2021-11-19 05:22:43,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:22:43,702 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 2670 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:22:43,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2678 Valid, 3532 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-11-19 05:22:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-19 05:22:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 2569. [2021-11-19 05:22:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 1495 states have (on average 2.0381270903010034) internal successors, (3047), 2550 states have internal predecessors, (3047), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:22:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3082 transitions. [2021-11-19 05:22:43,795 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3082 transitions. Word has length 7 [2021-11-19 05:22:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:22:43,795 INFO L470 AbstractCegarLoop]: Abstraction has 2569 states and 3082 transitions. [2021-11-19 05:22:43,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3082 transitions. [2021-11-19 05:22:43,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:22:43,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:22:43,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:22:43,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:22:44,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:22:44,019 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:22:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:22:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1456660511, now seen corresponding path program 1 times [2021-11-19 05:22:44,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:22:44,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785757882] [2021-11-19 05:22:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:22:44,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:22:44,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:22:44,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:22:44,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:22:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:22:44,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:22:44,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:22:44,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:22:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:44,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:22:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:44,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:22:44,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785757882] [2021-11-19 05:22:44,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785757882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:22:44,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:22:44,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:22:44,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465966930] [2021-11-19 05:22:44,343 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:22:44,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:22:44,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:22:44,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:22:44,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:22:44,345 INFO L87 Difference]: Start difference. First operand 2569 states and 3082 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:22:48,707 INFO L93 Difference]: Finished difference Result 3307 states and 3820 transitions. [2021-11-19 05:22:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:22:48,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 05:22:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:22:48,729 INFO L225 Difference]: With dead ends: 3307 [2021-11-19 05:22:48,729 INFO L226 Difference]: Without dead ends: 3307 [2021-11-19 05:22:48,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:22:48,731 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 1987 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:22:48,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2917 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-19 05:22:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-11-19 05:22:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2478. [2021-11-19 05:22:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 1495 states have (on average 1.9545150501672242) internal successors, (2922), 2459 states have internal predecessors, (2922), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:22:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 2957 transitions. [2021-11-19 05:22:48,818 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 2957 transitions. Word has length 12 [2021-11-19 05:22:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:22:48,818 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 2957 transitions. [2021-11-19 05:22:48,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 2957 transitions. [2021-11-19 05:22:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:22:48,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:22:48,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:22:48,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:22:49,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:22:49,036 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:22:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:22:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1456660512, now seen corresponding path program 1 times [2021-11-19 05:22:49,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:22:49,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915802294] [2021-11-19 05:22:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:22:49,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:22:49,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:22:49,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:22:49,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:22:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:22:49,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:22:49,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:22:49,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:22:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:49,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:22:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:49,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:22:49,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915802294] [2021-11-19 05:22:49,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915802294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:22:49,498 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:22:49,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:22:49,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191150707] [2021-11-19 05:22:49,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:22:49,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:22:49,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:22:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:22:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:22:49,501 INFO L87 Difference]: Start difference. First operand 2478 states and 2957 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:59,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:22:59,306 INFO L93 Difference]: Finished difference Result 3433 states and 3848 transitions. [2021-11-19 05:22:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:22:59,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 05:22:59,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:22:59,327 INFO L225 Difference]: With dead ends: 3433 [2021-11-19 05:22:59,328 INFO L226 Difference]: Without dead ends: 3433 [2021-11-19 05:22:59,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:22:59,329 INFO L933 BasicCegarLoop]: 2495 mSDtfsCounter, 2798 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2804 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:22:59,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2804 Valid, 3601 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 05:22:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2021-11-19 05:22:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 2470. [2021-11-19 05:22:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1497 states have (on average 1.9385437541750168) internal successors, (2902), 2451 states have internal predecessors, (2902), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:22:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 2937 transitions. [2021-11-19 05:22:59,440 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 2937 transitions. Word has length 12 [2021-11-19 05:22:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:22:59,440 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 2937 transitions. [2021-11-19 05:22:59,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:22:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 2937 transitions. [2021-11-19 05:22:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:22:59,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:22:59,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:22:59,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 05:22:59,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:22:59,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr658REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:22:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:22:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1450909355, now seen corresponding path program 1 times [2021-11-19 05:22:59,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:22:59,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639710484] [2021-11-19 05:22:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:22:59,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:22:59,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:22:59,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:22:59,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:22:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:22:59,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:22:59,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:22:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:59,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:22:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:59,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:22:59,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639710484] [2021-11-19 05:22:59,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639710484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:22:59,981 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:22:59,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:22:59,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633276124] [2021-11-19 05:22:59,982 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:22:59,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:22:59,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:22:59,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:22:59,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:22:59,984 INFO L87 Difference]: Start difference. First operand 2470 states and 2937 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:00,041 INFO L93 Difference]: Finished difference Result 2428 states and 2894 transitions. [2021-11-19 05:23:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:23:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 05:23:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:00,058 INFO L225 Difference]: With dead ends: 2428 [2021-11-19 05:23:00,058 INFO L226 Difference]: Without dead ends: 2428 [2021-11-19 05:23:00,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:00,061 INFO L933 BasicCegarLoop]: 2214 mSDtfsCounter, 2012 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:00,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2016 Valid, 3429 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:23:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-11-19 05:23:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2428. [2021-11-19 05:23:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1479 states have (on average 1.9330628803245435) internal successors, (2859), 2409 states have internal predecessors, (2859), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 2894 transitions. [2021-11-19 05:23:00,128 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 2894 transitions. Word has length 15 [2021-11-19 05:23:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:00,128 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 2894 transitions. [2021-11-19 05:23:00,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 2894 transitions. [2021-11-19 05:23:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:23:00,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:00,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:00,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:00,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:00,343 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr682REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1540536399, now seen corresponding path program 1 times [2021-11-19 05:23:00,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:00,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806965717] [2021-11-19 05:23:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:00,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:00,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:00,345 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:00,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:23:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:00,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:23:00,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:00,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:00,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:00,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806965717] [2021-11-19 05:23:00,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806965717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:00,613 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:00,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 05:23:00,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806607047] [2021-11-19 05:23:00,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:00,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:23:00,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:00,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:23:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:23:00,615 INFO L87 Difference]: Start difference. First operand 2428 states and 2894 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:00,753 INFO L93 Difference]: Finished difference Result 2407 states and 2866 transitions. [2021-11-19 05:23:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:23:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 05:23:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:00,768 INFO L225 Difference]: With dead ends: 2407 [2021-11-19 05:23:00,768 INFO L226 Difference]: Without dead ends: 2407 [2021-11-19 05:23:00,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:23:00,771 INFO L933 BasicCegarLoop]: 2169 mSDtfsCounter, 1944 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 5547 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:00,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1948 Valid, 5547 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:23:00,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-19 05:23:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2406. [2021-11-19 05:23:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1471 states have (on average 1.9238613188307274) internal successors, (2830), 2387 states have internal predecessors, (2830), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 2865 transitions. [2021-11-19 05:23:00,826 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 2865 transitions. Word has length 17 [2021-11-19 05:23:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:00,827 INFO L470 AbstractCegarLoop]: Abstraction has 2406 states and 2865 transitions. [2021-11-19 05:23:00,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 2865 transitions. [2021-11-19 05:23:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:23:00,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:00,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:00,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:01,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:01,048 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr334REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 192419436, now seen corresponding path program 1 times [2021-11-19 05:23:01,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:01,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441749650] [2021-11-19 05:23:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:01,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:01,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:01,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:01,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:23:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:01,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:23:01,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:01,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:01,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:01,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441749650] [2021-11-19 05:23:01,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441749650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:01,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:01,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:23:01,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331463637] [2021-11-19 05:23:01,348 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:01,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:23:01,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:01,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:23:01,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:01,349 INFO L87 Difference]: Start difference. First operand 2406 states and 2865 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:01,443 INFO L93 Difference]: Finished difference Result 3839 states and 4394 transitions. [2021-11-19 05:23:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:23:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 05:23:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:01,466 INFO L225 Difference]: With dead ends: 3839 [2021-11-19 05:23:01,466 INFO L226 Difference]: Without dead ends: 3839 [2021-11-19 05:23:01,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:01,467 INFO L933 BasicCegarLoop]: 3707 mSDtfsCounter, 4182 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 5323 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:01,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 5323 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:23:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-11-19 05:23:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 2328. [2021-11-19 05:23:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 1417 states have (on average 1.9061397318278053) internal successors, (2701), 2309 states have internal predecessors, (2701), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 2736 transitions. [2021-11-19 05:23:01,533 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 2736 transitions. Word has length 24 [2021-11-19 05:23:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:01,533 INFO L470 AbstractCegarLoop]: Abstraction has 2328 states and 2736 transitions. [2021-11-19 05:23:01,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 2736 transitions. [2021-11-19 05:23:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:23:01,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:01,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:01,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:01,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:01,750 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 47115756, now seen corresponding path program 1 times [2021-11-19 05:23:01,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:01,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657385346] [2021-11-19 05:23:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:01,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:01,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:01,752 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:01,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:23:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:01,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:23:01,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:02,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:02,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:02,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657385346] [2021-11-19 05:23:02,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657385346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:02,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:02,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:23:02,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747228343] [2021-11-19 05:23:02,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:02,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:23:02,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:02,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:23:02,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:02,061 INFO L87 Difference]: Start difference. First operand 2328 states and 2736 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:02,127 INFO L93 Difference]: Finished difference Result 3762 states and 4317 transitions. [2021-11-19 05:23:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:23:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 05:23:02,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:02,155 INFO L225 Difference]: With dead ends: 3762 [2021-11-19 05:23:02,156 INFO L226 Difference]: Without dead ends: 3762 [2021-11-19 05:23:02,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:02,157 INFO L933 BasicCegarLoop]: 3628 mSDtfsCounter, 2048 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 6788 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:02,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 6788 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:23:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2021-11-19 05:23:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 2286. [2021-11-19 05:23:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 1399 states have (on average 1.899928520371694) internal successors, (2658), 2267 states have internal predecessors, (2658), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 2693 transitions. [2021-11-19 05:23:02,215 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 2693 transitions. Word has length 24 [2021-11-19 05:23:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:02,215 INFO L470 AbstractCegarLoop]: Abstraction has 2286 states and 2693 transitions. [2021-11-19 05:23:02,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 2693 transitions. [2021-11-19 05:23:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:23:02,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:02,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:02,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:02,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:02,435 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr358REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:02,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:02,435 INFO L85 PathProgramCache]: Analyzing trace with hash 231511206, now seen corresponding path program 1 times [2021-11-19 05:23:02,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:02,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990461221] [2021-11-19 05:23:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:02,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:02,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:02,437 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:02,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:23:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:02,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:23:02,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:02,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:02,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:02,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990461221] [2021-11-19 05:23:02,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990461221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:02,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:02,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 05:23:02,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979921620] [2021-11-19 05:23:02,833 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:02,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:23:02,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:02,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:23:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:23:02,834 INFO L87 Difference]: Start difference. First operand 2286 states and 2693 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:02,973 INFO L93 Difference]: Finished difference Result 3720 states and 4224 transitions. [2021-11-19 05:23:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:23:02,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-19 05:23:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:02,988 INFO L225 Difference]: With dead ends: 3720 [2021-11-19 05:23:02,988 INFO L226 Difference]: Without dead ends: 3720 [2021-11-19 05:23:02,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:23:02,989 INFO L933 BasicCegarLoop]: 3576 mSDtfsCounter, 4028 mSDsluCounter, 5143 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4038 SdHoareTripleChecker+Valid, 8719 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:02,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4038 Valid, 8719 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:23:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-11-19 05:23:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 2248. [2021-11-19 05:23:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1375 states have (on average 1.8698181818181818) internal successors, (2571), 2229 states have internal predecessors, (2571), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:03,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2606 transitions. [2021-11-19 05:23:03,043 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2606 transitions. Word has length 26 [2021-11-19 05:23:03,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:03,044 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 2606 transitions. [2021-11-19 05:23:03,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:03,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2606 transitions. [2021-11-19 05:23:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:23:03,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:03,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:03,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:03,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:03,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr40REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1966399834, now seen corresponding path program 1 times [2021-11-19 05:23:03,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:03,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509378019] [2021-11-19 05:23:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:03,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:03,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:03,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:03,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:23:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:03,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:23:03,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:03,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:03,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:03,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509378019] [2021-11-19 05:23:03,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509378019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:03,610 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:03,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 05:23:03,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692618362] [2021-11-19 05:23:03,610 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:03,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:23:03,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:23:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:23:03,612 INFO L87 Difference]: Start difference. First operand 2248 states and 2606 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:03,722 INFO L93 Difference]: Finished difference Result 3681 states and 4173 transitions. [2021-11-19 05:23:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:23:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-19 05:23:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:03,732 INFO L225 Difference]: With dead ends: 3681 [2021-11-19 05:23:03,732 INFO L226 Difference]: Without dead ends: 3681 [2021-11-19 05:23:03,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:23:03,733 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 1984 mSDsluCounter, 6597 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 10110 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:03,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 10110 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:23:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-11-19 05:23:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2226. [2021-11-19 05:23:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1367 states have (on average 1.8595464520848572) internal successors, (2542), 2207 states have internal predecessors, (2542), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 2577 transitions. [2021-11-19 05:23:03,812 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 2577 transitions. Word has length 26 [2021-11-19 05:23:03,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:03,812 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 2577 transitions. [2021-11-19 05:23:03,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 2577 transitions. [2021-11-19 05:23:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 05:23:03,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:03,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:03,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:04,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:04,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr696REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash -500295907, now seen corresponding path program 1 times [2021-11-19 05:23:04,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:04,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922486274] [2021-11-19 05:23:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:04,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:04,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:04,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:04,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:23:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:04,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:23:04,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:04,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:23:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:04,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:04,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:04,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922486274] [2021-11-19 05:23:04,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922486274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:04,525 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:04,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:23:04,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555881519] [2021-11-19 05:23:04,525 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:04,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:23:04,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:23:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:04,526 INFO L87 Difference]: Start difference. First operand 2226 states and 2577 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:08,764 INFO L93 Difference]: Finished difference Result 2678 states and 2940 transitions. [2021-11-19 05:23:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:23:08,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 05:23:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:08,783 INFO L225 Difference]: With dead ends: 2678 [2021-11-19 05:23:08,784 INFO L226 Difference]: Without dead ends: 2678 [2021-11-19 05:23:08,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:23:08,785 INFO L933 BasicCegarLoop]: 1247 mSDtfsCounter, 2729 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:08,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 2352 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-19 05:23:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-11-19 05:23:08,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2222. [2021-11-19 05:23:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1367 states have (on average 1.8566203365032918) internal successors, (2538), 2203 states have internal predecessors, (2538), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2573 transitions. [2021-11-19 05:23:08,859 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2573 transitions. Word has length 31 [2021-11-19 05:23:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:08,860 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 2573 transitions. [2021-11-19 05:23:08,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2573 transitions. [2021-11-19 05:23:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 05:23:08,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:08,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:08,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:09,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:09,077 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr697REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:09,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash -500295906, now seen corresponding path program 1 times [2021-11-19 05:23:09,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:09,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128983533] [2021-11-19 05:23:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:09,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:09,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:09,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:09,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 05:23:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:09,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:23:09,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:09,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:23:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:09,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:10,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:10,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128983533] [2021-11-19 05:23:10,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128983533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:10,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:10,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:23:10,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615833528] [2021-11-19 05:23:10,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:10,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:23:10,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:23:10,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:23:10,105 INFO L87 Difference]: Start difference. First operand 2222 states and 2573 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:26,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:26,837 INFO L93 Difference]: Finished difference Result 3219 states and 3556 transitions. [2021-11-19 05:23:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:23:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 05:23:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:26,847 INFO L225 Difference]: With dead ends: 3219 [2021-11-19 05:23:26,847 INFO L226 Difference]: Without dead ends: 3219 [2021-11-19 05:23:26,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:23:26,848 INFO L933 BasicCegarLoop]: 1485 mSDtfsCounter, 4179 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 4575 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:26,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4179 Valid, 4575 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2021-11-19 05:23:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-11-19 05:23:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2255. [2021-11-19 05:23:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1401 states have (on average 1.8379728765167738) internal successors, (2575), 2236 states have internal predecessors, (2575), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2610 transitions. [2021-11-19 05:23:26,889 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2610 transitions. Word has length 31 [2021-11-19 05:23:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:26,889 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 2610 transitions. [2021-11-19 05:23:26,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2610 transitions. [2021-11-19 05:23:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:23:26,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:26,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:26,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 05:23:27,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:27,104 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr372REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1370503628, now seen corresponding path program 1 times [2021-11-19 05:23:27,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:27,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260953401] [2021-11-19 05:23:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:27,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:27,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:27,106 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:27,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 05:23:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:27,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:23:27,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:27,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:23:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:27,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:27,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:27,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260953401] [2021-11-19 05:23:27,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260953401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:27,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:27,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:23:27,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486168304] [2021-11-19 05:23:27,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:27,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:23:27,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:23:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:27,620 INFO L87 Difference]: Start difference. First operand 2255 states and 2610 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:35,026 INFO L93 Difference]: Finished difference Result 4711 states and 5277 transitions. [2021-11-19 05:23:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:23:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-19 05:23:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:35,038 INFO L225 Difference]: With dead ends: 4711 [2021-11-19 05:23:35,038 INFO L226 Difference]: Without dead ends: 4711 [2021-11-19 05:23:35,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:23:35,039 INFO L933 BasicCegarLoop]: 2262 mSDtfsCounter, 4669 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:35,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 4570 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2977 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 05:23:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-11-19 05:23:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 2252. [2021-11-19 05:23:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 1401 states have (on average 1.8301213418986437) internal successors, (2564), 2233 states have internal predecessors, (2564), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 2599 transitions. [2021-11-19 05:23:35,091 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 2599 transitions. Word has length 40 [2021-11-19 05:23:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:35,092 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 2599 transitions. [2021-11-19 05:23:35,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 2599 transitions. [2021-11-19 05:23:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:23:35,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:35,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:35,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-19 05:23:35,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:35,307 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr373REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1370503627, now seen corresponding path program 1 times [2021-11-19 05:23:35,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:35,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690703733] [2021-11-19 05:23:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:35,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:35,309 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:35,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 05:23:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:35,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:23:35,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:35,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:23:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:35,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:36,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:36,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690703733] [2021-11-19 05:23:36,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690703733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:36,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:36,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:23:36,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116438326] [2021-11-19 05:23:36,385 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:36,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:23:36,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:36,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:23:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:23:36,387 INFO L87 Difference]: Start difference. First operand 2252 states and 2599 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:23:54,392 INFO L93 Difference]: Finished difference Result 4656 states and 5162 transitions. [2021-11-19 05:23:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:23:54,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-19 05:23:54,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:23:54,402 INFO L225 Difference]: With dead ends: 4656 [2021-11-19 05:23:54,402 INFO L226 Difference]: Without dead ends: 4656 [2021-11-19 05:23:54,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:23:54,403 INFO L933 BasicCegarLoop]: 2523 mSDtfsCounter, 6117 mSDsluCounter, 3447 mSDsCounter, 0 mSdLazyCounter, 3690 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6122 SdHoareTripleChecker+Valid, 5970 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:23:54,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6122 Valid, 5970 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3690 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2021-11-19 05:23:54,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2021-11-19 05:23:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 2252. [2021-11-19 05:23:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 1401 states have (on average 1.827266238401142) internal successors, (2560), 2233 states have internal predecessors, (2560), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:23:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 2595 transitions. [2021-11-19 05:23:54,451 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 2595 transitions. Word has length 40 [2021-11-19 05:23:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:23:54,451 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 2595 transitions. [2021-11-19 05:23:54,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:23:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 2595 transitions. [2021-11-19 05:23:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:23:54,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:23:54,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:23:54,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 05:23:54,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:23:54,666 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr54REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:23:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:23:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash 937079220, now seen corresponding path program 1 times [2021-11-19 05:23:54,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:23:54,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062322825] [2021-11-19 05:23:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:54,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:23:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:23:54,669 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:23:54,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 05:23:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:54,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:23:54,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:54,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:23:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:55,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:55,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:23:55,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062322825] [2021-11-19 05:23:55,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062322825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:23:55,244 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:23:55,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:23:55,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731752436] [2021-11-19 05:23:55,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:23:55,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:23:55,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:23:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:23:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:23:55,247 INFO L87 Difference]: Start difference. First operand 2252 states and 2595 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:01,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:01,198 INFO L93 Difference]: Finished difference Result 4324 states and 4866 transitions. [2021-11-19 05:24:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:24:01,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-19 05:24:01,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:01,207 INFO L225 Difference]: With dead ends: 4324 [2021-11-19 05:24:01,207 INFO L226 Difference]: Without dead ends: 4324 [2021-11-19 05:24:01,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:24:01,208 INFO L933 BasicCegarLoop]: 2284 mSDtfsCounter, 4289 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4296 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:01,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4296 Valid, 4399 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-19 05:24:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2021-11-19 05:24:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 2248. [2021-11-19 05:24:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1401 states have (on average 1.8244111349036403) internal successors, (2556), 2229 states have internal predecessors, (2556), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:24:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2591 transitions. [2021-11-19 05:24:01,254 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2591 transitions. Word has length 40 [2021-11-19 05:24:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:01,255 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 2591 transitions. [2021-11-19 05:24:01,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2591 transitions. [2021-11-19 05:24:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:24:01,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:01,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:01,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:01,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:01,470 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr55REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash 937079221, now seen corresponding path program 1 times [2021-11-19 05:24:01,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:01,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845278853] [2021-11-19 05:24:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:01,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:01,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:01,473 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:01,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 05:24:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:01,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:24:01,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:01,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:24:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:02,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:02,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:02,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845278853] [2021-11-19 05:24:02,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845278853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:02,541 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:02,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:24:02,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354001950] [2021-11-19 05:24:02,541 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:02,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:24:02,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:24:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:24:02,542 INFO L87 Difference]: Start difference. First operand 2248 states and 2591 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:19,238 INFO L93 Difference]: Finished difference Result 4223 states and 4645 transitions. [2021-11-19 05:24:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:24:19,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-19 05:24:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:19,247 INFO L225 Difference]: With dead ends: 4223 [2021-11-19 05:24:19,247 INFO L226 Difference]: Without dead ends: 4223 [2021-11-19 05:24:19,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:24:19,249 INFO L933 BasicCegarLoop]: 2734 mSDtfsCounter, 5790 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5795 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:19,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5795 Valid, 5385 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2021-11-19 05:24:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-11-19 05:24:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 2244. [2021-11-19 05:24:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1401 states have (on average 1.8215560314061385) internal successors, (2552), 2225 states have internal predecessors, (2552), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:24:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2587 transitions. [2021-11-19 05:24:19,297 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2587 transitions. Word has length 40 [2021-11-19 05:24:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:19,298 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 2587 transitions. [2021-11-19 05:24:19,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2587 transitions. [2021-11-19 05:24:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:24:19,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:19,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:19,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 05:24:19,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:19,522 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:19,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1883921252, now seen corresponding path program 1 times [2021-11-19 05:24:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:19,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648744714] [2021-11-19 05:24:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:19,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:19,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:19,525 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:19,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 05:24:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:19,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:24:19,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:19,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:20,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:20,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648744714] [2021-11-19 05:24:20,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648744714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:20,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:20,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:24:20,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726404536] [2021-11-19 05:24:20,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:20,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:24:20,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:24:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:24:20,031 INFO L87 Difference]: Start difference. First operand 2244 states and 2587 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:20,104 INFO L93 Difference]: Finished difference Result 2238 states and 2573 transitions. [2021-11-19 05:24:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:24:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-11-19 05:24:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:20,113 INFO L225 Difference]: With dead ends: 2238 [2021-11-19 05:24:20,113 INFO L226 Difference]: Without dead ends: 2238 [2021-11-19 05:24:20,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:24:20,115 INFO L933 BasicCegarLoop]: 1999 mSDtfsCounter, 959 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:20,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 5027 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:24:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2021-11-19 05:24:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2238. [2021-11-19 05:24:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 1395 states have (on average 1.8193548387096774) internal successors, (2538), 2219 states have internal predecessors, (2538), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 05:24:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 2573 transitions. [2021-11-19 05:24:20,149 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 2573 transitions. Word has length 44 [2021-11-19 05:24:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:20,150 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 2573 transitions. [2021-11-19 05:24:20,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 2573 transitions. [2021-11-19 05:24:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 05:24:20,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:20,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:20,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:20,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:20,364 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1519568976, now seen corresponding path program 1 times [2021-11-19 05:24:20,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:20,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030642108] [2021-11-19 05:24:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:20,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:20,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:20,369 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 05:24:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:20,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:24:20,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:20,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:21,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:21,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030642108] [2021-11-19 05:24:21,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030642108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:21,299 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:21,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:24:21,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038752949] [2021-11-19 05:24:21,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:21,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:24:21,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:24:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:24:21,300 INFO L87 Difference]: Start difference. First operand 2238 states and 2573 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:21,618 INFO L93 Difference]: Finished difference Result 3578 states and 4039 transitions. [2021-11-19 05:24:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:24:21,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-11-19 05:24:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:21,623 INFO L225 Difference]: With dead ends: 3578 [2021-11-19 05:24:21,623 INFO L226 Difference]: Without dead ends: 3578 [2021-11-19 05:24:21,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:24:21,624 INFO L933 BasicCegarLoop]: 2088 mSDtfsCounter, 1378 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:21,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 3934 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:24:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-11-19 05:24:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 2957. [2021-11-19 05:24:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2957 states, 2110 states have (on average 1.7943127962085308) internal successors, (3786), 2931 states have internal predecessors, (3786), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:24:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2957 states to 2957 states and 3835 transitions. [2021-11-19 05:24:21,677 INFO L78 Accepts]: Start accepts. Automaton has 2957 states and 3835 transitions. Word has length 52 [2021-11-19 05:24:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:21,677 INFO L470 AbstractCegarLoop]: Abstraction has 2957 states and 3835 transitions. [2021-11-19 05:24:21,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2957 states and 3835 transitions. [2021-11-19 05:24:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 05:24:21,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:21,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:21,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:21,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:21,902 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:21,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2035581901, now seen corresponding path program 1 times [2021-11-19 05:24:21,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:21,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743268700] [2021-11-19 05:24:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:21,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:21,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:21,904 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:21,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 05:24:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:22,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:24:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:22,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:22,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:22,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743268700] [2021-11-19 05:24:22,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743268700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:22,374 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:22,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:24:22,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41909771] [2021-11-19 05:24:22,374 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:22,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:24:22,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:24:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:24:22,375 INFO L87 Difference]: Start difference. First operand 2957 states and 3835 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:22,441 INFO L93 Difference]: Finished difference Result 4107 states and 5051 transitions. [2021-11-19 05:24:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:24:22,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-11-19 05:24:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:22,447 INFO L225 Difference]: With dead ends: 4107 [2021-11-19 05:24:22,448 INFO L226 Difference]: Without dead ends: 4107 [2021-11-19 05:24:22,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:24:22,448 INFO L933 BasicCegarLoop]: 3052 mSDtfsCounter, 1953 mSDsluCounter, 4355 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 7407 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:22,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 7407 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:24:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-19 05:24:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2933. [2021-11-19 05:24:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2086 states have (on average 1.7957813998082455) internal successors, (3746), 2907 states have internal predecessors, (3746), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:24:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3795 transitions. [2021-11-19 05:24:22,542 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3795 transitions. Word has length 55 [2021-11-19 05:24:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:22,542 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 3795 transitions. [2021-11-19 05:24:22,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3795 transitions. [2021-11-19 05:24:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 05:24:22,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:22,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:22,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:22,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:22,744 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash -619632909, now seen corresponding path program 1 times [2021-11-19 05:24:22,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:22,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532761350] [2021-11-19 05:24:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:22,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:22,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:22,747 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:22,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 05:24:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:23,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:24:23,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:23,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:23,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:23,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532761350] [2021-11-19 05:24:23,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532761350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:23,267 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:23,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:24:23,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126965806] [2021-11-19 05:24:23,268 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:23,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:24:23,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:24:23,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:24:23,269 INFO L87 Difference]: Start difference. First operand 2933 states and 3795 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:23,336 INFO L93 Difference]: Finished difference Result 3852 states and 4549 transitions. [2021-11-19 05:24:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:24:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-11-19 05:24:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:23,341 INFO L225 Difference]: With dead ends: 3852 [2021-11-19 05:24:23,341 INFO L226 Difference]: Without dead ends: 3852 [2021-11-19 05:24:23,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:24:23,342 INFO L933 BasicCegarLoop]: 3315 mSDtfsCounter, 1944 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 7983 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:23,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 7983 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:24:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-11-19 05:24:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2921. [2021-11-19 05:24:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2074 states have (on average 1.7965284474445515) internal successors, (3726), 2895 states have internal predecessors, (3726), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:24:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 3775 transitions. [2021-11-19 05:24:23,389 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 3775 transitions. Word has length 58 [2021-11-19 05:24:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:23,390 INFO L470 AbstractCegarLoop]: Abstraction has 2921 states and 3775 transitions. [2021-11-19 05:24:23,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 3775 transitions. [2021-11-19 05:24:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:24:23,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:23,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:23,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:23,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:23,606 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:23,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash -973745247, now seen corresponding path program 1 times [2021-11-19 05:24:23,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:23,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402020193] [2021-11-19 05:24:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:23,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:23,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:23,618 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:23,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 05:24:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:23,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:24:23,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:23,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:24:23,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:24:23,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:24:24,055 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 05:24:24,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 05:24:24,123 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 05:24:24,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 05:24:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:24,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:24,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:24,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402020193] [2021-11-19 05:24:24,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402020193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:24,389 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:24,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:24:24,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47566418] [2021-11-19 05:24:24,389 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:24,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:24:24,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:24:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:24:24,391 INFO L87 Difference]: Start difference. First operand 2921 states and 3775 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:26,569 INFO L93 Difference]: Finished difference Result 3026 states and 3886 transitions. [2021-11-19 05:24:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:24:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-19 05:24:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:26,583 INFO L225 Difference]: With dead ends: 3026 [2021-11-19 05:24:26,583 INFO L226 Difference]: Without dead ends: 3026 [2021-11-19 05:24:26,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:24:26,584 INFO L933 BasicCegarLoop]: 1890 mSDtfsCounter, 906 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 5635 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:26,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 5635 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 05:24:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-11-19 05:24:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2887. [2021-11-19 05:24:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2040 states have (on average 1.809313725490196) internal successors, (3691), 2861 states have internal predecessors, (3691), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:24:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3740 transitions. [2021-11-19 05:24:26,634 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3740 transitions. Word has length 61 [2021-11-19 05:24:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:26,634 INFO L470 AbstractCegarLoop]: Abstraction has 2887 states and 3740 transitions. [2021-11-19 05:24:26,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3740 transitions. [2021-11-19 05:24:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 05:24:26,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:26,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:26,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:26,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:26,851 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash -463327871, now seen corresponding path program 1 times [2021-11-19 05:24:26,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:26,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84586880] [2021-11-19 05:24:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:26,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:26,852 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:26,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 05:24:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:27,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:24:27,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:27,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:27,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:27,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84586880] [2021-11-19 05:24:27,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84586880] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:27,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:27,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:24:27,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674190164] [2021-11-19 05:24:27,902 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:27,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:24:27,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:27,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:24:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:24:27,903 INFO L87 Difference]: Start difference. First operand 2887 states and 3740 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:28,098 INFO L93 Difference]: Finished difference Result 4151 states and 5189 transitions. [2021-11-19 05:24:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:24:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-11-19 05:24:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:28,105 INFO L225 Difference]: With dead ends: 4151 [2021-11-19 05:24:28,105 INFO L226 Difference]: Without dead ends: 4151 [2021-11-19 05:24:28,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:24:28,107 INFO L933 BasicCegarLoop]: 2285 mSDtfsCounter, 1075 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:28,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 4160 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:24:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-11-19 05:24:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3610. [2021-11-19 05:24:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 2759 states have (on average 1.7767306995288148) internal successors, (4902), 3577 states have internal predecessors, (4902), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:24:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 4965 transitions. [2021-11-19 05:24:28,181 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 4965 transitions. Word has length 63 [2021-11-19 05:24:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:28,181 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 4965 transitions. [2021-11-19 05:24:28,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:28,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 4965 transitions. [2021-11-19 05:24:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:24:28,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:28,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:28,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:28,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:28,404 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr391REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash 917765823, now seen corresponding path program 1 times [2021-11-19 05:24:28,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:28,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542578090] [2021-11-19 05:24:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:28,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:28,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:28,407 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:28,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 05:24:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:28,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:24:28,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:28,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:24:28,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:24:29,484 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:24:29,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-19 05:24:29,490 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 05:24:29,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 05:24:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:29,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:34,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:34,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542578090] [2021-11-19 05:24:34,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542578090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:34,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:34,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:24:34,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988917398] [2021-11-19 05:24:34,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:34,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:24:34,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:24:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 05:24:34,582 INFO L87 Difference]: Start difference. First operand 3610 states and 4965 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:42,333 INFO L93 Difference]: Finished difference Result 3853 states and 5093 transitions. [2021-11-19 05:24:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:24:42,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-19 05:24:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:42,341 INFO L225 Difference]: With dead ends: 3853 [2021-11-19 05:24:42,342 INFO L226 Difference]: Without dead ends: 3853 [2021-11-19 05:24:42,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 05:24:42,343 INFO L933 BasicCegarLoop]: 1493 mSDtfsCounter, 2238 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1534 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:42,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2246 Valid, 2647 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1173 Invalid, 0 Unknown, 1534 Unchecked, 7.7s Time] [2021-11-19 05:24:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2021-11-19 05:24:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3585. [2021-11-19 05:24:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 2765 states have (on average 1.749005424954792) internal successors, (4836), 3552 states have internal predecessors, (4836), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:24:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 4899 transitions. [2021-11-19 05:24:42,402 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 4899 transitions. Word has length 66 [2021-11-19 05:24:42,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:42,403 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 4899 transitions. [2021-11-19 05:24:42,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 4899 transitions. [2021-11-19 05:24:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:24:42,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:42,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:42,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:42,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:42,621 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:42,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1144339135, now seen corresponding path program 1 times [2021-11-19 05:24:42,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:42,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339747849] [2021-11-19 05:24:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:42,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:42,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:42,624 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:42,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 05:24:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:43,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:24:43,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:24:43,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:24:43,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:24:44,034 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:24:44,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-19 05:24:44,041 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 05:24:44,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-19 05:24:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:44,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:49,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:24:49,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339747849] [2021-11-19 05:24:49,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339747849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:24:49,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:24:49,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:24:49,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682641266] [2021-11-19 05:24:49,153 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:24:49,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:24:49,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:24:49,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:24:49,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 05:24:49,154 INFO L87 Difference]: Start difference. First operand 3585 states and 4899 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:24:59,378 INFO L93 Difference]: Finished difference Result 5328 states and 7188 transitions. [2021-11-19 05:24:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:24:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-19 05:24:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:24:59,392 INFO L225 Difference]: With dead ends: 5328 [2021-11-19 05:24:59,392 INFO L226 Difference]: Without dead ends: 5328 [2021-11-19 05:24:59,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 05:24:59,394 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 2424 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 4148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2601 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:24:59,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 4681 Invalid, 4148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1506 Invalid, 0 Unknown, 2601 Unchecked, 10.1s Time] [2021-11-19 05:24:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-11-19 05:24:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 3555. [2021-11-19 05:24:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 2767 states have (on average 1.7253342970726417) internal successors, (4774), 3522 states have internal predecessors, (4774), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:24:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4837 transitions. [2021-11-19 05:24:59,471 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4837 transitions. Word has length 66 [2021-11-19 05:24:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:24:59,472 INFO L470 AbstractCegarLoop]: Abstraction has 3555 states and 4837 transitions. [2021-11-19 05:24:59,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:24:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4837 transitions. [2021-11-19 05:24:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 05:24:59,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:24:59,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:24:59,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 05:24:59,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:24:59,684 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr393REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:24:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:24:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1504698432, now seen corresponding path program 1 times [2021-11-19 05:24:59,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:24:59,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983895988] [2021-11-19 05:24:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:24:59,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:24:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:24:59,686 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:24:59,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 05:24:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:24:59,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:24:59,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:00,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:25:00,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 05:25:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:00,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:25:00,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983895988] [2021-11-19 05:25:00,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983895988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:25:00,611 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:25:00,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:25:00,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120740169] [2021-11-19 05:25:00,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:25:00,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:25:00,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:25:00,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:25:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:25:00,613 INFO L87 Difference]: Start difference. First operand 3555 states and 4837 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:05,770 INFO L93 Difference]: Finished difference Result 3552 states and 4819 transitions. [2021-11-19 05:25:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:25:05,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-19 05:25:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:05,780 INFO L225 Difference]: With dead ends: 3552 [2021-11-19 05:25:05,780 INFO L226 Difference]: Without dead ends: 3552 [2021-11-19 05:25:05,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:25:05,782 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 1673 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:05,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 2326 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 05:25:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2021-11-19 05:25:05,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3545. [2021-11-19 05:25:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 2765 states have (on average 1.7193490054249547) internal successors, (4754), 3512 states have internal predecessors, (4754), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:25:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4817 transitions. [2021-11-19 05:25:05,841 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4817 transitions. Word has length 68 [2021-11-19 05:25:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:05,841 INFO L470 AbstractCegarLoop]: Abstraction has 3545 states and 4817 transitions. [2021-11-19 05:25:05,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4817 transitions. [2021-11-19 05:25:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:25:05,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:05,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:05,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 05:25:06,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:25:06,057 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr396REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:25:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash -101487020, now seen corresponding path program 1 times [2021-11-19 05:25:06,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:25:06,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640845130] [2021-11-19 05:25:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:06,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:25:06,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:25:06,060 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:25:06,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 05:25:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:06,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:25:06,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:06,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:25:06,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 05:25:06,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 05:25:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:06,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:25:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:06,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:25:06,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640845130] [2021-11-19 05:25:06,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640845130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:25:06,761 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:25:06,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:25:06,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627947551] [2021-11-19 05:25:06,761 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:25:06,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:25:06,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:25:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:25:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:25:06,763 INFO L87 Difference]: Start difference. First operand 3545 states and 4817 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:12,505 INFO L93 Difference]: Finished difference Result 3544 states and 4814 transitions. [2021-11-19 05:25:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:25:12,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 05:25:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:12,511 INFO L225 Difference]: With dead ends: 3544 [2021-11-19 05:25:12,511 INFO L226 Difference]: Without dead ends: 3544 [2021-11-19 05:25:12,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:25:12,511 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 4 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:12,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5121 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-19 05:25:12,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2021-11-19 05:25:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3544. [2021-11-19 05:25:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 2765 states have (on average 1.7182640144665462) internal successors, (4751), 3511 states have internal predecessors, (4751), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:25:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 4814 transitions. [2021-11-19 05:25:12,544 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 4814 transitions. Word has length 71 [2021-11-19 05:25:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:12,545 INFO L470 AbstractCegarLoop]: Abstraction has 3544 states and 4814 transitions. [2021-11-19 05:25:12,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 4814 transitions. [2021-11-19 05:25:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:25:12,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:12,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:12,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 05:25:12,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:25:12,746 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr397REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:25:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash -101487019, now seen corresponding path program 1 times [2021-11-19 05:25:12,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:25:12,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828439130] [2021-11-19 05:25:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:12,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:25:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:25:12,749 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:25:12,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 05:25:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:13,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:25:13,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:13,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:25:13,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:25:13,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 05:25:13,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 05:25:13,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 05:25:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:13,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:25:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:13,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:25:13,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828439130] [2021-11-19 05:25:13,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828439130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:25:13,656 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:25:13,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 05:25:13,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913704779] [2021-11-19 05:25:13,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:25:13,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:25:13,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:25:13,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:25:13,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:25:13,657 INFO L87 Difference]: Start difference. First operand 3544 states and 4814 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:29,006 INFO L93 Difference]: Finished difference Result 3543 states and 4811 transitions. [2021-11-19 05:25:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:25:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 05:25:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:29,010 INFO L225 Difference]: With dead ends: 3543 [2021-11-19 05:25:29,010 INFO L226 Difference]: Without dead ends: 3543 [2021-11-19 05:25:29,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:25:29,011 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 3 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6190 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:29,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6190 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2021-11-19 05:25:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-11-19 05:25:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-11-19 05:25:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 2762 states have (on average 1.719044170890659) internal successors, (4748), 3510 states have internal predecessors, (4748), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:25:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 4811 transitions. [2021-11-19 05:25:29,042 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 4811 transitions. Word has length 71 [2021-11-19 05:25:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:29,042 INFO L470 AbstractCegarLoop]: Abstraction has 3543 states and 4811 transitions. [2021-11-19 05:25:29,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 4811 transitions. [2021-11-19 05:25:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:25:29,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:29,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:29,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 05:25:29,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:25:29,244 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr78REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:25:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:29,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1711524328, now seen corresponding path program 1 times [2021-11-19 05:25:29,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:25:29,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150948863] [2021-11-19 05:25:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:29,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:25:29,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:25:29,246 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:25:29,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 05:25:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:29,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:25:29,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:29,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:25:29,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 05:25:29,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 05:25:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:29,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:25:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:29,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:25:29,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150948863] [2021-11-19 05:25:29,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150948863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:25:29,765 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:25:29,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:25:29,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670552397] [2021-11-19 05:25:29,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:25:29,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:25:29,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:25:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:25:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:25:29,766 INFO L87 Difference]: Start difference. First operand 3543 states and 4811 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:34,810 INFO L93 Difference]: Finished difference Result 3542 states and 4809 transitions. [2021-11-19 05:25:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:25:34,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 05:25:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:34,814 INFO L225 Difference]: With dead ends: 3542 [2021-11-19 05:25:34,814 INFO L226 Difference]: Without dead ends: 3542 [2021-11-19 05:25:34,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:25:34,815 INFO L933 BasicCegarLoop]: 1929 mSDtfsCounter, 4 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:34,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5116 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 05:25:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2021-11-19 05:25:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3542. [2021-11-19 05:25:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 2762 states have (on average 1.718320057929037) internal successors, (4746), 3509 states have internal predecessors, (4746), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:25:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4809 transitions. [2021-11-19 05:25:34,850 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4809 transitions. Word has length 71 [2021-11-19 05:25:34,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:34,850 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 4809 transitions. [2021-11-19 05:25:34,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4809 transitions. [2021-11-19 05:25:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:25:34,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:34,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:34,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 05:25:35,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:25:35,052 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr79REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:25:35,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:35,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1711524329, now seen corresponding path program 1 times [2021-11-19 05:25:35,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:25:35,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667686982] [2021-11-19 05:25:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:35,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:25:35,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:25:35,054 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:25:35,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 05:25:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:25:35,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:35,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:25:35,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 05:25:35,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:25:35,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 05:25:35,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 05:25:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:35,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:25:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:35,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:25:35,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667686982] [2021-11-19 05:25:35,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667686982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:25:35,769 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:25:35,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 05:25:35,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662855721] [2021-11-19 05:25:35,770 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:25:35,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:25:35,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:25:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:25:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:25:35,771 INFO L87 Difference]: Start difference. First operand 3542 states and 4809 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:51,795 INFO L93 Difference]: Finished difference Result 3541 states and 4807 transitions. [2021-11-19 05:25:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:25:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 05:25:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:51,802 INFO L225 Difference]: With dead ends: 3541 [2021-11-19 05:25:51,802 INFO L226 Difference]: Without dead ends: 3541 [2021-11-19 05:25:51,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:25:51,803 INFO L933 BasicCegarLoop]: 1929 mSDtfsCounter, 4 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6184 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:51,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6184 Invalid, 3466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2021-11-19 05:25:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-11-19 05:25:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3541. [2021-11-19 05:25:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3541 states, 2760 states have (on average 1.718840579710145) internal successors, (4744), 3508 states have internal predecessors, (4744), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 05:25:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 4807 transitions. [2021-11-19 05:25:51,846 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 4807 transitions. Word has length 71 [2021-11-19 05:25:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:51,846 INFO L470 AbstractCegarLoop]: Abstraction has 3541 states and 4807 transitions. [2021-11-19 05:25:51,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:25:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 4807 transitions. [2021-11-19 05:25:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 05:25:51,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:51,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:51,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-19 05:25:52,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:25:52,061 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:25:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash 788046843, now seen corresponding path program 1 times [2021-11-19 05:25:52,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:25:52,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513168933] [2021-11-19 05:25:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:52,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:25:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:25:52,064 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:25:52,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 05:25:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:52,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:25:52,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:52,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:25:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:52,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:25:52,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513168933] [2021-11-19 05:25:52,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513168933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:25:52,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:25:52,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:25:52,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200387951] [2021-11-19 05:25:52,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:25:52,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:25:52,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:25:52,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:25:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:25:52,666 INFO L87 Difference]: Start difference. First operand 3541 states and 4807 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:25:52,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:52,774 INFO L93 Difference]: Finished difference Result 3551 states and 4823 transitions. [2021-11-19 05:25:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:25:52,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-19 05:25:52,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:52,784 INFO L225 Difference]: With dead ends: 3551 [2021-11-19 05:25:52,784 INFO L226 Difference]: Without dead ends: 3551 [2021-11-19 05:25:52,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:25:52,785 INFO L933 BasicCegarLoop]: 1927 mSDtfsCounter, 11 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:52,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3853 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:25:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-11-19 05:25:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3551. [2021-11-19 05:25:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 2768 states have (on average 1.7182080924855492) internal successors, (4756), 3517 states have internal predecessors, (4756), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-19 05:25:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 4823 transitions. [2021-11-19 05:25:52,851 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 4823 transitions. Word has length 79 [2021-11-19 05:25:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:52,851 INFO L470 AbstractCegarLoop]: Abstraction has 3551 states and 4823 transitions. [2021-11-19 05:25:52,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:25:52,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 4823 transitions. [2021-11-19 05:25:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 05:25:52,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:52,853 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:52,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 05:25:53,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:25:53,082 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:25:53,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:53,082 INFO L85 PathProgramCache]: Analyzing trace with hash -545188869, now seen corresponding path program 1 times [2021-11-19 05:25:53,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:25:53,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865348956] [2021-11-19 05:25:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:25:53,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:25:53,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:25:53,085 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:25:53,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 05:25:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:25:53,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:25:53,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:53,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:25:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:25:53,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:25:53,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865348956] [2021-11-19 05:25:53,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865348956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:25:53,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:25:53,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 05:25:53,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881143891] [2021-11-19 05:25:53,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:25:53,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:25:53,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:25:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:25:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:25:53,711 INFO L87 Difference]: Start difference. First operand 3551 states and 4823 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:25:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:25:54,117 INFO L93 Difference]: Finished difference Result 3565 states and 4847 transitions. [2021-11-19 05:25:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:25:54,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2021-11-19 05:25:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:25:54,127 INFO L225 Difference]: With dead ends: 3565 [2021-11-19 05:25:54,127 INFO L226 Difference]: Without dead ends: 3561 [2021-11-19 05:25:54,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:25:54,128 INFO L933 BasicCegarLoop]: 1929 mSDtfsCounter, 30 mSDsluCounter, 7696 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9625 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:25:54,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 9625 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:25:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-11-19 05:25:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3557. [2021-11-19 05:25:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2774 states have (on average 1.7173756308579669) internal successors, (4764), 3523 states have internal predecessors, (4764), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-19 05:25:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4831 transitions. [2021-11-19 05:25:54,205 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4831 transitions. Word has length 81 [2021-11-19 05:25:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:25:54,206 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4831 transitions. [2021-11-19 05:25:54,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:25:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4831 transitions. [2021-11-19 05:25:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 05:25:54,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:25:54,207 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:25:54,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 05:25:54,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:25:54,421 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 05:25:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:25:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash -427953157, now seen corresponding path program 2 times [2021-11-19 05:25:54,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:25:54,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102644543] [2021-11-19 05:25:54,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:25:54,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:25:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:25:54,424 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:25:54,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beaad50d-2f66-46a9-b7fa-7c6d9b05b7d2/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-19 05:25:54,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 05:25:54,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:25:54,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:25:54,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:25:54,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:25:54,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:25:54,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:25:54,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:25:54,904 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 05:25:54,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 05:25:55,001 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:25:55,001 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 15 treesize of output 15 [2021-11-19 05:25:55,210 INFO L354 Elim1Store]: treesize reduction 229, result has 11.2 percent of original size [2021-11-19 05:25:55,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 86 [2021-11-19 05:26:00,625 INFO L354 Elim1Store]: treesize reduction 1963, result has 5.1 percent of original size [2021-11-19 05:26:00,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 118 treesize of output 150 [2021-11-19 05:26:10,410 INFO L354 Elim1Store]: treesize reduction 876, result has 0.1 percent of original size [2021-11-19 05:26:10,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 157 treesize of output 67 [2021-11-19 05:26:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 05:26:10,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:26:13,723 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem11| (_ BitVec 32)) (|main_#t~mem10| (_ BitVec 32)) (main_~user~0.offset (_ BitVec 32)) (|main_#t~mem9| (_ BitVec 32))) (bvslt (let ((.cse0 (select (store |c_#memory_int| c_main_~user~0.base (let ((.cse1 (bvmul |main_#t~mem10| |main_#t~mem11|))) (store (store (store (store (store (store (store (store (select |c_#memory_int| c_main_~user~0.base) main_~user~0.offset ((_ extract 7 0) |main_#t~mem9|)) (bvadd main_~user~0.offset (_ bv1 32)) ((_ extract 15 8) |main_#t~mem9|)) (bvadd (_ bv2 32) main_~user~0.offset) ((_ extract 23 16) |main_#t~mem9|)) (bvadd (_ bv3 32) main_~user~0.offset) ((_ extract 31 24) |main_#t~mem9|)) (bvadd (_ bv4 32) main_~user~0.offset) ((_ extract 7 0) .cse1)) (bvadd main_~user~0.offset (_ bv5 32)) ((_ extract 15 8) .cse1)) (bvadd (_ bv6 32) main_~user~0.offset) ((_ extract 23 16) .cse1)) (bvadd main_~user~0.offset (_ bv7 32)) ((_ extract 31 24) .cse1)))) |c_main_~#i~0.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_main_~#i~0.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_main_~#i~0.offset|))) (select .cse0 (bvadd |c_main_~#i~0.offset| (_ bv1 32)))) (select .cse0 |c_main_~#i~0.offset|))) (_ bv10 32))) is different from false