./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:27:14,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:27:14,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:27:14,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:27:14,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:27:14,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:27:14,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:27:14,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:27:14,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:27:14,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:27:14,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:27:14,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:27:14,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:27:14,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:27:14,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:27:14,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:27:14,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:27:14,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:27:14,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:27:14,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:27:14,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:27:14,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:27:14,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:27:14,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:27:14,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:27:14,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:27:14,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:27:14,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:27:14,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:27:14,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:27:14,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:27:14,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:27:14,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:27:14,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:27:14,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:27:14,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:27:14,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:27:14,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:27:14,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:27:14,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:27:14,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:27:14,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:27:14,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:27:14,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:27:14,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:27:14,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:27:14,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:27:14,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:27:14,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:27:14,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:27:14,519 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:27:14,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:27:14,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:27:14,521 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:27:14,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:27:14,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:27:14,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:27:14,522 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:27:14,522 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:27:14,523 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:27:14,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:27:14,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:27:14,523 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:27:14,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:27:14,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:27:14,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:27:14,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:27:14,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:14,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:27:14,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:27:14,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:27:14,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:27:14,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:27:14,528 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_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2021-11-13 18:27:14,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:27:14,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:27:14,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:27:14,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:27:14,983 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:27:14,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-13 18:27:15,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/2672a67bb/12092fe073d74908ab599f32d204abd6/FLAG9340b7ded [2021-11-13 18:27:15,898 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:27:15,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-13 18:27:15,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/2672a67bb/12092fe073d74908ab599f32d204abd6/FLAG9340b7ded [2021-11-13 18:27:16,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/2672a67bb/12092fe073d74908ab599f32d204abd6 [2021-11-13 18:27:16,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:27:16,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:27:16,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:16,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:27:16,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:27:16,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:16" (1/1) ... [2021-11-13 18:27:16,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a804f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:16, skipping insertion in model container [2021-11-13 18:27:16,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:16" (1/1) ... [2021-11-13 18:27:16,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:27:16,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:27:16,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-13 18:27:16,961 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-13 18:27:16,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:17,019 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 18:27:17,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6cb20588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:17, skipping insertion in model container [2021-11-13 18:27:17,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:17,022 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:27:17,025 INFO L158 Benchmark]: Toolchain (without parser) took 969.65ms. Allocated memory is still 96.5MB. Free memory was 52.4MB in the beginning and 56.3MB in the end (delta: -3.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-11-13 18:27:17,026 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:27:17,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 966.76ms. Allocated memory is still 96.5MB. Free memory was 52.2MB in the beginning and 56.5MB in the end (delta: -4.4MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-11-13 18:27:17,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 966.76ms. Allocated memory is still 96.5MB. Free memory was 52.2MB in the beginning and 56.5MB in the end (delta: -4.4MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:27:19,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:27:19,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:27:19,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:27:19,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:27:19,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:27:19,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:27:19,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:27:19,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:27:19,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:27:19,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:27:19,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:27:19,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:27:19,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:27:19,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:27:19,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:27:19,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:27:19,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:27:19,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:27:19,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:27:19,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:27:19,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:27:19,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:27:19,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:27:19,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:27:19,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:27:19,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:27:19,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:27:19,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:27:19,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:27:19,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:27:19,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:27:19,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:27:19,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:27:19,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:27:19,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:27:19,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:27:19,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:27:19,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:27:19,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:27:19,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:27:19,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:27:19,839 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:27:19,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:27:19,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:27:19,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:27:19,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:27:19,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:27:19,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:27:19,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:27:19,844 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:27:19,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:27:19,845 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:27:19,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:27:19,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:27:19,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:27:19,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:27:19,847 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:27:19,847 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:27:19,847 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:27:19,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:27:19,848 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:27:19,848 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:27:19,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:27:19,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:27:19,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:27:19,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:27:19,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:27:19,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:27:19,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:19,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:27:19,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:27:19,851 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:27:19,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:27:19,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:27:19,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:27:19,852 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_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2021-11-13 18:27:20,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:27:20,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:27:20,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:27:20,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:27:20,305 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:27:20,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-13 18:27:20,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/06b46d872/5df7ef8ac7014e71a8a2c4a2168a9896/FLAGe02e38048 [2021-11-13 18:27:21,200 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:27:21,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2021-11-13 18:27:21,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/06b46d872/5df7ef8ac7014e71a8a2c4a2168a9896/FLAGe02e38048 [2021-11-13 18:27:21,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/data/06b46d872/5df7ef8ac7014e71a8a2c4a2168a9896 [2021-11-13 18:27:21,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:27:21,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:27:21,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:21,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:27:21,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:27:21,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:21" (1/1) ... [2021-11-13 18:27:21,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f21f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:21, skipping insertion in model container [2021-11-13 18:27:21,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:21" (1/1) ... [2021-11-13 18:27:21,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:27:21,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:27:21,980 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-13 18:27:22,184 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-13 18:27:22,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:22,266 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:27:22,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:27:22,331 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-13 18:27:22,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-13 18:27:22,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:22,492 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:27:22,525 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[33021,33034] [2021-11-13 18:27:22,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i[49681,49694] [2021-11-13 18:27:22,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:22,671 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:27:22,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22 WrapperNode [2021-11-13 18:27:22,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:22,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:27:22,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:27:22,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:27:22,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:22,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:22,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:22,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:22,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:22,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:22,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:23,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:27:23,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:27:23,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:27:23,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:27:23,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (1/1) ... [2021-11-13 18:27:23,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:23,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:27:23,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:27:23,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:27:23,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:27:23,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:27:23,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:27:23,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:27:23,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:27:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:27:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:27:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:27:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:27:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:27:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 18:27:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:27:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:27:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:27:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:27:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:27:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:27:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:27:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:27:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:27:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:27:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:27:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:27:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:27:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:27:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:27:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:27:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:27:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:27:23,132 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:27:23,132 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:27:23,132 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:27:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:27:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:27:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:27:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:27:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:27:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:27:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:27:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:27:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:27:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:27:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:27:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:27:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:27:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:27:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:27:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:27:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:27:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:27:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:27:23,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:27:23,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:27:23,140 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:27:23,140 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:27:23,141 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:27:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:27:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:27:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:27:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:27:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:27:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:27:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:27:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:27:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:27:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:27:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:27:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:27:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:27:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:27:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:27:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:27:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:27:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:27:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:27:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:27:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:27:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:27:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:27:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:27:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:27:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:27:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:27:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:27:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:27:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:27:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:27:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:27:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:27:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:27:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:27:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:27:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:27:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:27:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:27:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:27:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:27:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 18:27:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:27:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:27:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:27:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:27:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:27:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:27:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:27:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:27:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:27:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:27:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:27:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:27:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:27:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:27:23,867 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:27:31,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:27:31,822 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-13 18:27:31,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:31 BoogieIcfgContainer [2021-11-13 18:27:31,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:27:31,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:27:31,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:27:31,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:27:31,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:27:21" (1/3) ... [2021-11-13 18:27:31,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d79aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:31, skipping insertion in model container [2021-11-13 18:27:31,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:22" (2/3) ... [2021-11-13 18:27:31,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d79aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:31, skipping insertion in model container [2021-11-13 18:27:31,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:31" (3/3) ... [2021-11-13 18:27:31,840 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-3.i [2021-11-13 18:27:31,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:27:31,847 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-11-13 18:27:31,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:27:31,921 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:27:31,921 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-11-13 18:27:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-13 18:27:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:27:32,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:32,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:32,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:32,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675552, now seen corresponding path program 1 times [2021-11-13 18:27:32,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:32,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299607838] [2021-11-13 18:27:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:32,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:32,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:32,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:27:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:32,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:27:32,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:32,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:32,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:32,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299607838] [2021-11-13 18:27:32,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299607838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:32,410 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:32,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:27:32,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013916232] [2021-11-13 18:27:32,413 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:32,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:27:32,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:27:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:27:32,449 INFO L87 Difference]: Start difference. First operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:32,634 INFO L93 Difference]: Finished difference Result 1823 states and 1925 transitions. [2021-11-13 18:27:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:27:32,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 9 [2021-11-13 18:27:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:32,672 INFO L225 Difference]: With dead ends: 1823 [2021-11-13 18:27:32,672 INFO L226 Difference]: Without dead ends: 1820 [2021-11-13 18:27:32,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:27:32,677 INFO L933 BasicCegarLoop]: 1925 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:32,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 30.95ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:27:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-13 18:27:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2021-11-13 18:27:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 886 states have (on average 2.13882618510158) internal successors, (1895), 1806 states have internal predecessors, (1895), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:27:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 1922 transitions. [2021-11-13 18:27:32,829 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 1922 transitions. Word has length 9 [2021-11-13 18:27:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:32,829 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 1922 transitions. [2021-11-13 18:27:32,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 1922 transitions. [2021-11-13 18:27:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:27:32,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:32,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:32,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:33,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:33,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675490, now seen corresponding path program 1 times [2021-11-13 18:27:33,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:33,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849433446] [2021-11-13 18:27:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:33,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:33,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:33,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:33,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:27:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:27:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:33,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:33,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:33,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:33,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849433446] [2021-11-13 18:27:33,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849433446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:33,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:33,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:27:33,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863397052] [2021-11-13 18:27:33,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:33,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:33,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:33,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:33,435 INFO L87 Difference]: Start difference. First operand 1820 states and 1922 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:37,070 INFO L93 Difference]: Finished difference Result 2065 states and 2201 transitions. [2021-11-13 18:27:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 9 [2021-11-13 18:27:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:37,082 INFO L225 Difference]: With dead ends: 2065 [2021-11-13 18:27:37,082 INFO L226 Difference]: Without dead ends: 2065 [2021-11-13 18:27:37,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:37,099 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1357 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2991.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.13ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3527.86ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:37,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1803 Invalid, 1183 Unknown, 0 Unchecked, 25.13ms Time], IncrementalHoareTripleChecker [102 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 3527.86ms Time] [2021-11-13 18:27:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-11-13 18:27:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1805. [2021-11-13 18:27:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 962 states have (on average 2.0155925155925156) internal successors, (1939), 1791 states have internal predecessors, (1939), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:27:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 1966 transitions. [2021-11-13 18:27:37,155 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 1966 transitions. Word has length 9 [2021-11-13 18:27:37,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:37,155 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 1966 transitions. [2021-11-13 18:27:37,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 1966 transitions. [2021-11-13 18:27:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:27:37,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:37,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:37,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:37,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:37,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:37,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675489, now seen corresponding path program 1 times [2021-11-13 18:27:37,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:37,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180519242] [2021-11-13 18:27:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:37,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:37,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:37,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:37,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:27:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:37,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:37,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:37,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:37,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:37,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:37,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180519242] [2021-11-13 18:27:37,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180519242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:37,710 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:37,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:27:37,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497671695] [2021-11-13 18:27:37,711 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:37,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:37,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:37,712 INFO L87 Difference]: Start difference. First operand 1805 states and 1966 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:45,562 INFO L93 Difference]: Finished difference Result 2365 states and 2568 transitions. [2021-11-13 18:27:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 9 [2021-11-13 18:27:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:45,580 INFO L225 Difference]: With dead ends: 2365 [2021-11-13 18:27:45,580 INFO L226 Difference]: Without dead ends: 2365 [2021-11-13 18:27:45,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:45,582 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1542 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6815.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.67ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7728.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:45,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 2492 Invalid, 1284 Unknown, 0 Unchecked, 28.67ms Time], IncrementalHoareTripleChecker [28 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 7728.38ms Time] [2021-11-13 18:27:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-11-13 18:27:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1961. [2021-11-13 18:27:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:27:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2272 transitions. [2021-11-13 18:27:45,645 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2272 transitions. Word has length 9 [2021-11-13 18:27:45,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:45,645 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2272 transitions. [2021-11-13 18:27:45,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2272 transitions. [2021-11-13 18:27:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:27:45,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:45,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:45,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:45,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:45,859 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash 429420143, now seen corresponding path program 1 times [2021-11-13 18:27:45,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:45,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52945944] [2021-11-13 18:27:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:45,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:45,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:45,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:27:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:46,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:27:46,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:46,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:46,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:46,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52945944] [2021-11-13 18:27:46,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52945944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:46,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:46,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:27:46,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115507121] [2021-11-13 18:27:46,162 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:46,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:46,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:46,163 INFO L87 Difference]: Start difference. First operand 1961 states and 2272 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:46,399 INFO L93 Difference]: Finished difference Result 3512 states and 4106 transitions. [2021-11-13 18:27:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 10 [2021-11-13 18:27:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:46,423 INFO L225 Difference]: With dead ends: 3512 [2021-11-13 18:27:46,423 INFO L226 Difference]: Without dead ends: 3512 [2021-11-13 18:27:46,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:46,424 INFO L933 BasicCegarLoop]: 2047 mSDtfsCounter, 3869 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.03ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.41ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:46,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3883 Valid, 3850 Invalid, 40 Unknown, 0 Unchecked, 11.03ms Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 163.41ms Time] [2021-11-13 18:27:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-11-13 18:27:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2895. [2021-11-13 18:27:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2061 states have (on average 1.9718583212032994) internal successors, (4064), 2874 states have internal predecessors, (4064), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:27:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4105 transitions. [2021-11-13 18:27:46,533 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4105 transitions. Word has length 10 [2021-11-13 18:27:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:46,534 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 4105 transitions. [2021-11-13 18:27:46,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4105 transitions. [2021-11-13 18:27:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:27:46,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:46,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:46,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:46,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:46,747 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1992388696, now seen corresponding path program 1 times [2021-11-13 18:27:46,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:46,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125428484] [2021-11-13 18:27:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:46,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:46,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:46,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:46,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:27:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:47,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:27:47,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:47,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:47,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:47,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125428484] [2021-11-13 18:27:47,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125428484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:47,132 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:47,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:27:47,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546551930] [2021-11-13 18:27:47,132 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:47,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:47,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:47,134 INFO L87 Difference]: Start difference. First operand 2895 states and 4105 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) [2021-11-13 18:27:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:47,236 INFO L93 Difference]: Finished difference Result 2835 states and 4019 transitions. [2021-11-13 18:27:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:47,237 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 [2021-11-13 18:27:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:47,258 INFO L225 Difference]: With dead ends: 2835 [2021-11-13 18:27:47,259 INFO L226 Difference]: Without dead ends: 2835 [2021-11-13 18:27:47,259 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 [2021-11-13 18:27:47,262 INFO L933 BasicCegarLoop]: 1773 mSDtfsCounter, 3448 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3455 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.15ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:47,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3455 Valid, 1825 Invalid, 19 Unknown, 0 Unchecked, 7.15ms Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 34.81ms Time] [2021-11-13 18:27:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-11-13 18:27:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2021-11-13 18:27:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2025 states have (on average 1.9644444444444444) internal successors, (3978), 2814 states have internal predecessors, (3978), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:27:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4019 transitions. [2021-11-13 18:27:47,361 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4019 transitions. Word has length 15 [2021-11-13 18:27:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:47,362 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 4019 transitions. [2021-11-13 18:27:47,362 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) [2021-11-13 18:27:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4019 transitions. [2021-11-13 18:27:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:27:47,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:47,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:47,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:47,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:47,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash 869875523, now seen corresponding path program 1 times [2021-11-13 18:27:47,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:47,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007969112] [2021-11-13 18:27:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:47,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:47,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:47,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:47,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:27:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:47,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:47,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:47,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:47,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:47,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007969112] [2021-11-13 18:27:47,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007969112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:47,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:47,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:27:47,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808048124] [2021-11-13 18:27:47,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:47,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:27:47,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:47,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:27:47,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:47,881 INFO L87 Difference]: Start difference. First operand 2835 states and 4019 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) [2021-11-13 18:27:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:48,036 INFO L93 Difference]: Finished difference Result 2807 states and 3963 transitions. [2021-11-13 18:27:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:48,037 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 [2021-11-13 18:27:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:48,055 INFO L225 Difference]: With dead ends: 2807 [2021-11-13 18:27:48,056 INFO L226 Difference]: Without dead ends: 2807 [2021-11-13 18:27:48,056 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 [2021-11-13 18:27:48,057 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 3380 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.27ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.46ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:48,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3387 Valid, 3502 Invalid, 81 Unknown, 0 Unchecked, 12.27ms Time], IncrementalHoareTripleChecker [49 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 82.46ms Time] [2021-11-13 18:27:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-13 18:27:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2805. [2021-11-13 18:27:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2009 states have (on average 1.951219512195122) internal successors, (3920), 2784 states have internal predecessors, (3920), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:27:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3961 transitions. [2021-11-13 18:27:48,147 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3961 transitions. Word has length 17 [2021-11-13 18:27:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3961 transitions. [2021-11-13 18:27:48,148 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) [2021-11-13 18:27:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3961 transitions. [2021-11-13 18:27:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:27:48,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:48,150 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] [2021-11-13 18:27:48,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:48,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:48,363 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292016, now seen corresponding path program 1 times [2021-11-13 18:27:48,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:48,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961381890] [2021-11-13 18:27:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:48,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:48,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:48,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:27:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:48,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:48,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:48,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:48,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:48,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:48,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961381890] [2021-11-13 18:27:48,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961381890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:48,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:48,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:27:48,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797002960] [2021-11-13 18:27:48,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:48,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:48,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:48,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:48,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:48,842 INFO L87 Difference]: Start difference. First operand 2805 states and 3961 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) [2021-11-13 18:27:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:54,346 INFO L93 Difference]: Finished difference Result 4419 states and 6013 transitions. [2021-11-13 18:27:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:27:54,347 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 [2021-11-13 18:27:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:54,376 INFO L225 Difference]: With dead ends: 4419 [2021-11-13 18:27:54,377 INFO L226 Difference]: Without dead ends: 4419 [2021-11-13 18:27:54,377 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 [2021-11-13 18:27:54,378 INFO L933 BasicCegarLoop]: 1070 mSDtfsCounter, 3346 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4589.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3350 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.18ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5393.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:54,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3350 Valid, 2427 Invalid, 2114 Unknown, 0 Unchecked, 16.18ms Time], IncrementalHoareTripleChecker [41 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 5393.14ms Time] [2021-11-13 18:27:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-11-13 18:27:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 2801. [2021-11-13 18:27:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2009 states have (on average 1.947237431557989) internal successors, (3912), 2780 states have internal predecessors, (3912), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:27:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3953 transitions. [2021-11-13 18:27:54,484 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3953 transitions. Word has length 31 [2021-11-13 18:27:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:54,484 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3953 transitions. [2021-11-13 18:27:54,485 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) [2021-11-13 18:27:54,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3953 transitions. [2021-11-13 18:27:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:27:54,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:54,486 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] [2021-11-13 18:27:54,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:54,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:54,706 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:27:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292017, now seen corresponding path program 1 times [2021-11-13 18:27:54,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:54,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415854994] [2021-11-13 18:27:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:54,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:54,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:54,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:54,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:27:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:54,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:27:54,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:54,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:55,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:55,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:55,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415854994] [2021-11-13 18:27:55,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415854994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:55,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:55,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:27:55,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906937053] [2021-11-13 18:27:55,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:55,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:55,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:55,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:55,672 INFO L87 Difference]: Start difference. First operand 2801 states and 3953 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:09,254 INFO L93 Difference]: Finished difference Result 3743 states and 4936 transitions. [2021-11-13 18:28:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:28:09,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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 [2021-11-13 18:28:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:09,280 INFO L225 Difference]: With dead ends: 3743 [2021-11-13 18:28:09,280 INFO L226 Difference]: Without dead ends: 3743 [2021-11-13 18:28:09,281 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 [2021-11-13 18:28:09,282 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 2855 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11919.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.91ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13397.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:09,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2855 Valid, 3650 Invalid, 3062 Unknown, 0 Unchecked, 18.91ms Time], IncrementalHoareTripleChecker [20 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 13397.26ms Time] [2021-11-13 18:28:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-11-13 18:28:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 2797. [2021-11-13 18:28:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2009 states have (on average 1.943255350920856) internal successors, (3904), 2776 states have internal predecessors, (3904), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:28:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3945 transitions. [2021-11-13 18:28:09,367 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3945 transitions. Word has length 31 [2021-11-13 18:28:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:09,368 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3945 transitions. [2021-11-13 18:28:09,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3945 transitions. [2021-11-13 18:28:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:28:09,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:09,371 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] [2021-11-13 18:28:09,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:09,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:09,588 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:28:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash 931034612, now seen corresponding path program 1 times [2021-11-13 18:28:09,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:09,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732792174] [2021-11-13 18:28:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:09,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:09,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:09,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:09,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:28:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:09,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:28:09,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:09,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:10,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:10,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732792174] [2021-11-13 18:28:10,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732792174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:10,075 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:10,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:28:10,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524402911] [2021-11-13 18:28:10,076 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:10,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:28:10,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:10,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:28:10,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:10,077 INFO L87 Difference]: Start difference. First operand 2797 states and 3945 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:10,180 INFO L93 Difference]: Finished difference Result 2785 states and 3925 transitions. [2021-11-13 18:28:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:10,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 46 [2021-11-13 18:28:10,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:10,199 INFO L225 Difference]: With dead ends: 2785 [2021-11-13 18:28:10,199 INFO L226 Difference]: Without dead ends: 2785 [2021-11-13 18:28:10,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:28:10,200 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 1671 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.24ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:10,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1678 Valid, 3480 Invalid, 41 Unknown, 0 Unchecked, 5.24ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 43.31ms Time] [2021-11-13 18:28:10,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-13 18:28:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2021-11-13 18:28:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 1997 states have (on average 1.944917376064096) internal successors, (3884), 2764 states have internal predecessors, (3884), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:28:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3925 transitions. [2021-11-13 18:28:10,276 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3925 transitions. Word has length 46 [2021-11-13 18:28:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:10,276 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 3925 transitions. [2021-11-13 18:28:10,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3925 transitions. [2021-11-13 18:28:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:28:10,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:10,279 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] [2021-11-13 18:28:10,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:10,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:10,494 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:28:10,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1498564056, now seen corresponding path program 1 times [2021-11-13 18:28:10,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:10,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240536767] [2021-11-13 18:28:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:10,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:10,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:10,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:10,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:28:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:28:10,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:11,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:11,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:11,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240536767] [2021-11-13 18:28:11,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240536767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:11,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:11,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:28:11,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833645976] [2021-11-13 18:28:11,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:11,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:28:11,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:28:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:11,585 INFO L87 Difference]: Start difference. First operand 2785 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:11,891 INFO L93 Difference]: Finished difference Result 2974 states and 3960 transitions. [2021-11-13 18:28:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:28:11,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 54 [2021-11-13 18:28:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:11,906 INFO L225 Difference]: With dead ends: 2974 [2021-11-13 18:28:11,906 INFO L226 Difference]: Without dead ends: 2974 [2021-11-13 18:28:11,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:11,908 INFO L933 BasicCegarLoop]: 1800 mSDtfsCounter, 455 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 241.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:11,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 3396 Invalid, 99 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 281.51ms Time] [2021-11-13 18:28:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-11-13 18:28:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2601. [2021-11-13 18:28:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 1813 states have (on average 1.9464975179260893) internal successors, (3529), 2580 states have internal predecessors, (3529), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:28:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3570 transitions. [2021-11-13 18:28:12,008 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3570 transitions. Word has length 54 [2021-11-13 18:28:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:12,010 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3570 transitions. [2021-11-13 18:28:12,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3570 transitions. [2021-11-13 18:28:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:28:12,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:12,014 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] [2021-11-13 18:28:12,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:12,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:12,215 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:28:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1939122981, now seen corresponding path program 1 times [2021-11-13 18:28:12,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:12,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929662678] [2021-11-13 18:28:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:12,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:12,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:12,217 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:12,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:28:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:28:12,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:12,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:12,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:13,405 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:28:13,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-13 18:28:13,414 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:28:13,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-13 18:28:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:13,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:18,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:18,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929662678] [2021-11-13 18:28:18,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929662678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:18,599 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:18,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:28:18,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672515620] [2021-11-13 18:28:18,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:18,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:18,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:18,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:28:18,604 INFO L87 Difference]: Start difference. First operand 2601 states and 3570 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:30,181 INFO L93 Difference]: Finished difference Result 3955 states and 5114 transitions. [2021-11-13 18:28:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:28:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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 57 [2021-11-13 18:28:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:30,194 INFO L225 Difference]: With dead ends: 3955 [2021-11-13 18:28:30,195 INFO L226 Difference]: Without dead ends: 3955 [2021-11-13 18:28:30,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 18:28:30,196 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 2390 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9997.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.32ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2036 IncrementalHoareTripleChecker+Unchecked, 11445.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:30,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2399 Valid, 3211 Invalid, 4330 Unknown, 0 Unchecked, 22.32ms Time], IncrementalHoareTripleChecker [86 Valid, 2208 Invalid, 0 Unknown, 2036 Unchecked, 11445.50ms Time] [2021-11-13 18:28:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-11-13 18:28:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 2696. [2021-11-13 18:28:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 1940 states have (on average 1.9061855670103092) internal successors, (3698), 2672 states have internal predecessors, (3698), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:28:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3745 transitions. [2021-11-13 18:28:30,262 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3745 transitions. Word has length 57 [2021-11-13 18:28:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:30,263 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 3745 transitions. [2021-11-13 18:28:30,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3745 transitions. [2021-11-13 18:28:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 18:28:30,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:30,265 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] [2021-11-13 18:28:30,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:30,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:30,481 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:28:30,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash 518631356, now seen corresponding path program 1 times [2021-11-13 18:28:30,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:30,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704658859] [2021-11-13 18:28:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:30,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:30,484 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:30,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:28:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:30,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:28:30,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:31,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:31,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 18:28:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:31,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:31,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704658859] [2021-11-13 18:28:31,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704658859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:31,404 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:31,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:28:31,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113666683] [2021-11-13 18:28:31,405 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:31,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:31,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:31,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:31,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:31,407 INFO L87 Difference]: Start difference. First operand 2696 states and 3745 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:35,560 INFO L93 Difference]: Finished difference Result 2694 states and 3741 transitions. [2021-11-13 18:28:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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 59 [2021-11-13 18:28:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:35,567 INFO L225 Difference]: With dead ends: 2694 [2021-11-13 18:28:35,567 INFO L226 Difference]: Without dead ends: 2694 [2021-11-13 18:28:35,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:35,568 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 1273 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3542.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.25ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4105.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:35,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 1762 Invalid, 906 Unknown, 0 Unchecked, 8.25ms Time], IncrementalHoareTripleChecker [22 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 4105.47ms Time] [2021-11-13 18:28:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-11-13 18:28:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2694. [2021-11-13 18:28:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 1940 states have (on average 1.904123711340206) internal successors, (3694), 2670 states have internal predecessors, (3694), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:28:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3741 transitions. [2021-11-13 18:28:35,619 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3741 transitions. Word has length 59 [2021-11-13 18:28:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:35,620 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 3741 transitions. [2021-11-13 18:28:35,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3741 transitions. [2021-11-13 18:28:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:28:35,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:35,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:35,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:35,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:35,840 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:28:35,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669755, now seen corresponding path program 1 times [2021-11-13 18:28:35,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:35,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617554582] [2021-11-13 18:28:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:35,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:35,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:35,842 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:35,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:28:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:36,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:28:36,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:36,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:36,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 18:28:36,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 18:28:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:36,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:36,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:36,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617554582] [2021-11-13 18:28:36,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617554582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:36,433 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:36,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:28:36,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713657279] [2021-11-13 18:28:36,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:36,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:28:36,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:28:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:28:36,435 INFO L87 Difference]: Start difference. First operand 2694 states and 3741 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:41,912 INFO L93 Difference]: Finished difference Result 2693 states and 3739 transitions. [2021-11-13 18:28:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 62 [2021-11-13 18:28:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:41,919 INFO L225 Difference]: With dead ends: 2693 [2021-11-13 18:28:41,920 INFO L226 Difference]: Without dead ends: 2693 [2021-11-13 18:28:41,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:28:41,921 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 4 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4634.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5393.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:41,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4338 Invalid, 2436 Unknown, 0 Unchecked, 12.49ms Time], IncrementalHoareTripleChecker [1 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 5393.70ms Time] [2021-11-13 18:28:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-13 18:28:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2693. [2021-11-13 18:28:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 1940 states have (on average 1.9030927835051545) internal successors, (3692), 2669 states have internal predecessors, (3692), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:28:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3739 transitions. [2021-11-13 18:28:41,978 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3739 transitions. Word has length 62 [2021-11-13 18:28:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:41,979 INFO L470 AbstractCegarLoop]: Abstraction has 2693 states and 3739 transitions. [2021-11-13 18:28:41,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3739 transitions. [2021-11-13 18:28:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:28:41,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:41,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:41,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:42,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:42,194 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:28:42,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669756, now seen corresponding path program 1 times [2021-11-13 18:28:42,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:42,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243660980] [2021-11-13 18:28:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:42,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:42,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:42,197 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:42,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:28:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:42,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:28:42,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:42,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:42,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 18:28:42,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:28:42,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 18:28:42,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 18:28:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:42,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:43,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:43,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243660980] [2021-11-13 18:28:43,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243660980] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:43,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:43,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:28:43,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138375770] [2021-11-13 18:28:43,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:43,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:28:43,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:28:43,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:28:43,089 INFO L87 Difference]: Start difference. First operand 2693 states and 3739 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:29:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:03,537 INFO L93 Difference]: Finished difference Result 2692 states and 3737 transitions. [2021-11-13 18:29:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:03,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-13 18:29:03,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:03,544 INFO L225 Difference]: With dead ends: 2692 [2021-11-13 18:29:03,544 INFO L226 Difference]: Without dead ends: 2692 [2021-11-13 18:29:03,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:03,545 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 2 mSDsluCounter, 5208 mSDsCounter, 0 mSdLazyCounter, 4947 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18313.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6900 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20300.39ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:03,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6900 Invalid, 4948 Unknown, 0 Unchecked, 25.77ms Time], IncrementalHoareTripleChecker [1 Valid, 4947 Invalid, 0 Unknown, 0 Unchecked, 20300.39ms Time] [2021-11-13 18:29:03,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-11-13 18:29:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2692. [2021-11-13 18:29:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 1938 states have (on average 1.9040247678018576) internal successors, (3690), 2668 states have internal predecessors, (3690), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:29:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3737 transitions. [2021-11-13 18:29:03,616 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3737 transitions. Word has length 62 [2021-11-13 18:29:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:03,617 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 3737 transitions. [2021-11-13 18:29:03,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:29:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3737 transitions. [2021-11-13 18:29:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:29:03,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:03,618 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] [2021-11-13 18:29:03,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:03,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:03,834 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:29:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1507172066, now seen corresponding path program 1 times [2021-11-13 18:29:03,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:03,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439575945] [2021-11-13 18:29:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:03,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:03,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:03,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:29:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:29:04,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:04,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:04,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:04,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439575945] [2021-11-13 18:29:04,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439575945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:04,493 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:04,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:29:04,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691114903] [2021-11-13 18:29:04,494 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:04,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:04,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:04,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:04,495 INFO L87 Difference]: Start difference. First operand 2692 states and 3737 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:04,638 INFO L93 Difference]: Finished difference Result 2702 states and 3754 transitions. [2021-11-13 18:29:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 70 [2021-11-13 18:29:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:04,650 INFO L225 Difference]: With dead ends: 2702 [2021-11-13 18:29:04,650 INFO L226 Difference]: Without dead ends: 2702 [2021-11-13 18:29:04,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:04,651 INFO L933 BasicCegarLoop]: 1690 mSDtfsCounter, 7 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6743 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.24ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.85ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:04,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6743 Invalid, 54 Unknown, 0 Unchecked, 4.24ms Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 104.85ms Time] [2021-11-13 18:29:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2021-11-13 18:29:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2702. [2021-11-13 18:29:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 1946 states have (on average 1.9023638232271325) internal successors, (3702), 2677 states have internal predecessors, (3702), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:29:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 3754 transitions. [2021-11-13 18:29:04,726 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 3754 transitions. Word has length 70 [2021-11-13 18:29:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:04,727 INFO L470 AbstractCegarLoop]: Abstraction has 2702 states and 3754 transitions. [2021-11-13 18:29:04,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 3754 transitions. [2021-11-13 18:29:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 18:29:04,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:04,729 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] [2021-11-13 18:29:04,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:04,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:04,945 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:29:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1329602274, now seen corresponding path program 1 times [2021-11-13 18:29:04,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:04,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634011973] [2021-11-13 18:29:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:04,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:04,948 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:04,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:29:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:05,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:29:05,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:05,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:05,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:05,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634011973] [2021-11-13 18:29:05,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634011973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:29:05,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:29:05,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:29:05,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732544328] [2021-11-13 18:29:05,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:05,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:29:05,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:29:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:05,724 INFO L87 Difference]: Start difference. First operand 2702 states and 3754 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:06,231 INFO L93 Difference]: Finished difference Result 2716 states and 3780 transitions. [2021-11-13 18:29:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:29:06,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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 72 [2021-11-13 18:29:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:06,242 INFO L225 Difference]: With dead ends: 2716 [2021-11-13 18:29:06,243 INFO L226 Difference]: Without dead ends: 2712 [2021-11-13 18:29:06,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:29:06,244 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 23 mSDsluCounter, 6747 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8439 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.24ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 267.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:06,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 8439 Invalid, 141 Unknown, 0 Unchecked, 6.24ms Time], IncrementalHoareTripleChecker [27 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 267.59ms Time] [2021-11-13 18:29:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-11-13 18:29:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2708. [2021-11-13 18:29:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 1952 states have (on average 1.9006147540983607) internal successors, (3710), 2683 states have internal predecessors, (3710), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:29:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3762 transitions. [2021-11-13 18:29:06,299 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3762 transitions. Word has length 72 [2021-11-13 18:29:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:06,299 INFO L470 AbstractCegarLoop]: Abstraction has 2708 states and 3762 transitions. [2021-11-13 18:29:06,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3762 transitions. [2021-11-13 18:29:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 18:29:06,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:06,301 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] [2021-11-13 18:29:06,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:06,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:06,514 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:29:06,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash -801825054, now seen corresponding path program 2 times [2021-11-13 18:29:06,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:06,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635698694] [2021-11-13 18:29:06,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:29:06,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:06,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:06,517 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:06,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:29:07,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:29:07,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:07,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:29:07,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:07,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:08,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:08,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635698694] [2021-11-13 18:29:08,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635698694] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:29:08,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:29:08,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:29:08,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472674556] [2021-11-13 18:29:08,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:08,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:29:08,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:29:08,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:29:08,164 INFO L87 Difference]: Start difference. First operand 2708 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:09,896 INFO L93 Difference]: Finished difference Result 2736 states and 3824 transitions. [2021-11-13 18:29:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:29:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 76 [2021-11-13 18:29:09,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:09,906 INFO L225 Difference]: With dead ends: 2736 [2021-11-13 18:29:09,906 INFO L226 Difference]: Without dead ends: 2732 [2021-11-13 18:29:09,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:29:09,908 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 67 mSDsluCounter, 11840 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 728.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 13536 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.23ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 817.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:09,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 13536 Invalid, 439 Unknown, 0 Unchecked, 10.23ms Time], IncrementalHoareTripleChecker [65 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 817.38ms Time] [2021-11-13 18:29:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-13 18:29:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2720. [2021-11-13 18:29:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 1964 states have (on average 1.8971486761710794) internal successors, (3726), 2695 states have internal predecessors, (3726), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:29:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3778 transitions. [2021-11-13 18:29:09,964 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3778 transitions. Word has length 76 [2021-11-13 18:29:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:09,965 INFO L470 AbstractCegarLoop]: Abstraction has 2720 states and 3778 transitions. [2021-11-13 18:29:09,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3778 transitions. [2021-11-13 18:29:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 18:29:09,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:09,967 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:09,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:10,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:10,183 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:29:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1969283358, now seen corresponding path program 3 times [2021-11-13 18:29:10,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:10,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849373190] [2021-11-13 18:29:10,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:29:10,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:10,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:10,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:10,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:29:11,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:29:11,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:11,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:29:11,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:11,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:13,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:13,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849373190] [2021-11-13 18:29:13,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849373190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:29:13,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:29:13,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:29:13,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021796041] [2021-11-13 18:29:13,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:13,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:29:13,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:13,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:29:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:29:13,439 INFO L87 Difference]: Start difference. First operand 2720 states and 3778 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:22,684 INFO L93 Difference]: Finished difference Result 2776 states and 3942 transitions. [2021-11-13 18:29:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:29:22,685 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 84 [2021-11-13 18:29:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:22,692 INFO L225 Difference]: With dead ends: 2776 [2021-11-13 18:29:22,692 INFO L226 Difference]: Without dead ends: 2770 [2021-11-13 18:29:22,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:29:22,695 INFO L933 BasicCegarLoop]: 1702 mSDtfsCounter, 243 mSDsluCounter, 25453 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2861.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 27155 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.52ms SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3204.58ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:22,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 27155 Invalid, 1807 Unknown, 0 Unchecked, 25.52ms Time], IncrementalHoareTripleChecker [221 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 3204.58ms Time] [2021-11-13 18:29:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2021-11-13 18:29:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2744. [2021-11-13 18:29:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 1988 states have (on average 1.8898390342052314) internal successors, (3757), 2719 states have internal predecessors, (3757), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:29:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 3809 transitions. [2021-11-13 18:29:22,757 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 3809 transitions. Word has length 84 [2021-11-13 18:29:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:22,758 INFO L470 AbstractCegarLoop]: Abstraction has 2744 states and 3809 transitions. [2021-11-13 18:29:22,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 3809 transitions. [2021-11-13 18:29:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 18:29:22,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:22,760 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:22,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:22,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:22,970 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:29:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash -512549150, now seen corresponding path program 4 times [2021-11-13 18:29:22,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:22,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330393691] [2021-11-13 18:29:22,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:29:22,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:22,974 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:22,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:29:23,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:29:23,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:23,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:29:23,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:24,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:28,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:28,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330393691] [2021-11-13 18:29:28,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330393691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:29:28,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:29:28,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:29:28,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158473638] [2021-11-13 18:29:28,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:28,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:29:28,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:28,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:29:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:29:28,798 INFO L87 Difference]: Start difference. First operand 2744 states and 3809 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:45,751 INFO L93 Difference]: Finished difference Result 2836 states and 4045 transitions. [2021-11-13 18:29:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:29:45,752 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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 100 [2021-11-13 18:29:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:45,758 INFO L225 Difference]: With dead ends: 2836 [2021-11-13 18:29:45,758 INFO L226 Difference]: Without dead ends: 2832 [2021-11-13 18:29:45,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:29:45,765 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 274 mSDsluCounter, 56504 mSDsCounter, 0 mSdLazyCounter, 5137 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8734.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 58223 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.30ms SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 5137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9807.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:45,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 58223 Invalid, 5629 Unknown, 0 Unchecked, 61.30ms Time], IncrementalHoareTripleChecker [492 Valid, 5137 Invalid, 0 Unknown, 0 Unchecked, 9807.97ms Time] [2021-11-13 18:29:45,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-13 18:29:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2774. [2021-11-13 18:29:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2018 states have (on average 1.8845391476709614) internal successors, (3803), 2749 states have internal predecessors, (3803), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:29:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3855 transitions. [2021-11-13 18:29:45,864 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3855 transitions. Word has length 100 [2021-11-13 18:29:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:45,865 INFO L470 AbstractCegarLoop]: Abstraction has 2774 states and 3855 transitions. [2021-11-13 18:29:45,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3855 transitions. [2021-11-13 18:29:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 18:29:45,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:45,870 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:45,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:46,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:46,080 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-13 18:29:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:46,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1331912990, now seen corresponding path program 5 times [2021-11-13 18:29:46,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:46,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595612243] [2021-11-13 18:29:46,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:29:46,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:46,083 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:46,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8354adc0-80c3-4aa7-9a29-967dec695ce5/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:29:47,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:29:47,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:47,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:29:47,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:47,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:29:47,565 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:29:47,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-13 18:29:47,623 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 27 treesize of output 23 [2021-11-13 18:29:47,828 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 48 treesize of output 36