./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt --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 9d2d1d25c1b11f7b414e1443fc91e8d1675b2330 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt --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 9d2d1d25c1b11f7b414e1443fc91e8d1675b2330 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:01:59,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:01:59,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:01:59,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:01:59,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:01:59,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:01:59,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:01:59,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:01:59,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:01:59,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:01:59,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:01:59,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:01:59,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:01:59,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:01:59,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:01:59,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:01:59,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:01:59,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:01:59,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:01:59,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:01:59,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:01:59,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:01:59,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:01:59,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:01:59,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:01:59,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:01:59,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:01:59,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:01:59,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:01:59,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:01:59,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:01:59,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:01:59,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:01:59,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:01:59,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:01:59,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:01:59,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:01:59,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:01:59,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:01:59,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:01:59,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:01:59,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 01:01:59,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:01:59,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:01:59,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:01:59,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:01:59,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:01:59,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:01:59,450 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:01:59,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:01:59,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:01:59,451 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:01:59,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:01:59,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:01:59,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:01:59,452 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:01:59,452 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:01:59,452 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:01:59,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:01:59,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:01:59,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:01:59,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:01:59,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:01:59,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:01:59,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:01:59,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:59,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:01:59,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:01:59,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:01:59,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:01:59,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:01:59,455 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_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d2d1d25c1b11f7b414e1443fc91e8d1675b2330 [2021-10-13 01:01:59,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:01:59,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:01:59,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:01:59,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:01:59,719 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:01:59,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2021-10-13 01:01:59,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/abfa5b98d/b24e63f204574500af936972cff3dd4c/FLAG71e9c1156 [2021-10-13 01:02:00,352 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:02:00,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2021-10-13 01:02:00,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/abfa5b98d/b24e63f204574500af936972cff3dd4c/FLAG71e9c1156 [2021-10-13 01:02:00,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/abfa5b98d/b24e63f204574500af936972cff3dd4c [2021-10-13 01:02:00,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:02:00,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:02:00,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:02:00,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:02:00,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:02:00,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:02:00" (1/1) ... [2021-10-13 01:02:00,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236ad6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:00, skipping insertion in model container [2021-10-13 01:02:00,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:02:00" (1/1) ... [2021-10-13 01:02:00,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:02:00,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:02:01,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:02:01,205 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) [2021-10-13 01:02:01,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@712858f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:01, skipping insertion in model container [2021-10-13 01:02:01,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:02:01,210 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 01:02:01,214 INFO L168 Benchmark]: Toolchain (without parser) took 551.89 ms. Allocated memory is still 107.0 MB. Free memory was 73.0 MB in the beginning and 76.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:01,215 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:02:01,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.05 ms. Allocated memory is still 107.0 MB. Free memory was 73.0 MB in the beginning and 76.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:01,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 549.05 ms. Allocated memory is still 107.0 MB. Free memory was 73.0 MB in the beginning and 76.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:02:03,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:02:03,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:02:03,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:02:03,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:02:03,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:02:03,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:02:03,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:02:03,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:02:03,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:02:03,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:02:03,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:02:03,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:02:03,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:02:03,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:02:03,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:02:03,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:02:03,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:02:03,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:02:03,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:02:03,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:02:03,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:02:03,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:02:03,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:02:03,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:02:03,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:02:03,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:02:03,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:02:03,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:02:03,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:02:03,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:02:03,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:02:03,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:02:03,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:02:03,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:02:03,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:02:03,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:02:03,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:02:03,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:02:03,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:02:03,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:02:03,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 01:02:03,662 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:02:03,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:02:03,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:02:03,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:02:03,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:02:03,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:02:03,666 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:02:03,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:02:03,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:02:03,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:02:03,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:02:03,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:02:03,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:02:03,668 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:02:03,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:02:03,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 01:02:03,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:02:03,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:02:03,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:02:03,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:02:03,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:02:03,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:02:03,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:02:03,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:02:03,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:02:03,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:02:03,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:02:03,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:02:03,671 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:02:03,671 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:02:03,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:02:03,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:02:03,672 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_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d2d1d25c1b11f7b414e1443fc91e8d1675b2330 [2021-10-13 01:02:04,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:02:04,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:02:04,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:02:04,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:02:04,079 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:02:04,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2021-10-13 01:02:04,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/b4159e88e/117c203b5e1f410b9ce430ff2307f4c5/FLAGf0b88ce2f [2021-10-13 01:02:04,879 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:02:04,879 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2021-10-13 01:02:04,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/b4159e88e/117c203b5e1f410b9ce430ff2307f4c5/FLAGf0b88ce2f [2021-10-13 01:02:05,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/data/b4159e88e/117c203b5e1f410b9ce430ff2307f4c5 [2021-10-13 01:02:05,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:02:05,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:02:05,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:02:05,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:02:05,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:02:05,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:05,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd883fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05, skipping insertion in model container [2021-10-13 01:02:05,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:05,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:02:05,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:02:05,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:02:05,692 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 01:02:05,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:02:05,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:02:05,807 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:02:05,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:02:05,922 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:02:05,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05 WrapperNode [2021-10-13 01:02:05,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:02:05,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:02:05,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:02:05,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:02:05,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:05,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:05,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:05,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:05,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:06,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:06,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:06,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:02:06,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:02:06,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:02:06,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:02:06,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (1/1) ... [2021-10-13 01:02:06,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:02:06,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:02:06,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:02:06,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:02:06,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:02:06,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:02:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 01:02:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:02:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 01:02:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 01:02:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 01:02:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 01:02:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 01:02:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-13 01:02:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-13 01:02:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-13 01:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-13 01:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-13 01:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-13 01:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-13 01:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-13 01:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-13 01:02:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-13 01:02:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-13 01:02:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-13 01:02:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-13 01:02:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-13 01:02:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-13 01:02:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-13 01:02:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-13 01:02:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-13 01:02:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-13 01:02:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-13 01:02:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-13 01:02:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-13 01:02:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-13 01:02:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-13 01:02:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-13 01:02:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-13 01:02:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-13 01:02:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-13 01:02:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-13 01:02:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-13 01:02:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-13 01:02:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 01:02:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 01:02:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_14 [2021-10-13 01:02:06,149 INFO L138 BoogieDeclarations]: Found implementation of procedure free_unsafe_14 [2021-10-13 01:02:06,149 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-13 01:02:06,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:02:06,149 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-13 01:02:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-13 01:02:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-13 01:02:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 01:02:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 01:02:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 01:02:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 01:02:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 01:02:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 01:02:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 01:02:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 01:02:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 01:02:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 01:02:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 01:02:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 01:02:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 01:02:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 01:02:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 01:02:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 01:02:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 01:02:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 01:02:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 01:02:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 01:02:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 01:02:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 01:02:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 01:02:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 01:02:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 01:02:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 01:02:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 01:02:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 01:02:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 01:02:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 01:02:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 01:02:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 01:02:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 01:02:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 01:02:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 01:02:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 01:02:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 01:02:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 01:02:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 01:02:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 01:02:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 01:02:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 01:02:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 01:02:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 01:02:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 01:02:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 01:02:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 01:02:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 01:02:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 01:02:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 01:02:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 01:02:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 01:02:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 01:02:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 01:02:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 01:02:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 01:02:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 01:02:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 01:02:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 01:02:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 01:02:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 01:02:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 01:02:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 01:02:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 01:02:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 01:02:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 01:02:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 01:02:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 01:02:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 01:02:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 01:02:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 01:02:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 01:02:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 01:02:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 01:02:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 01:02:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 01:02:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 01:02:06,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 01:02:06,172 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 01:02:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 01:02:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 01:02:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 01:02:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 01:02:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 01:02:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 01:02:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 01:02:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 01:02:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 01:02:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 01:02:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 01:02:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 01:02:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 01:02:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 01:02:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 01:02:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 01:02:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 01:02:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 01:02:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 01:02:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 01:02:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 01:02:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 01:02:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 01:02:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 01:02:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 01:02:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 01:02:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 01:02:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 01:02:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-13 01:02:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:02:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-13 01:02:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-13 01:02:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 01:02:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 01:02:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-13 01:02:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 01:02:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-13 01:02:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-13 01:02:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-13 01:02:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 01:02:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-13 01:02:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-13 01:02:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-13 01:02:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 01:02:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-13 01:02:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-13 01:02:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-13 01:02:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-13 01:02:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-13 01:02:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-13 01:02:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 01:02:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-13 01:02:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-13 01:02:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 01:02:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-13 01:02:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-13 01:02:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-13 01:02:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-13 01:02:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-13 01:02:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-13 01:02:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-13 01:02:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-13 01:02:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-13 01:02:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-13 01:02:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-13 01:02:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-13 01:02:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 01:02:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 01:02:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_14 [2021-10-13 01:02:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure free_unsafe_14 [2021-10-13 01:02:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-13 01:02:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:02:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 01:02:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:02:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:02:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:02:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:02:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-13 01:02:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-13 01:02:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-13 01:02:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-13 01:02:06,794 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 01:02:07,188 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 01:02:07,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:02:07,524 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-13 01:02:07,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:02:07 BoogieIcfgContainer [2021-10-13 01:02:07,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:02:07,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:02:07,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:02:07,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:02:07,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:02:05" (1/3) ... [2021-10-13 01:02:07,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa9bc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:02:07, skipping insertion in model container [2021-10-13 01:02:07,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:05" (2/3) ... [2021-10-13 01:02:07,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa9bc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:02:07, skipping insertion in model container [2021-10-13 01:02:07,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:02:07" (3/3) ... [2021-10-13 01:02:07,539 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test14_2.i [2021-10-13 01:02:07,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:02:07,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-10-13 01:02:07,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:02:07,614 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, mConcurrency=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 [2021-10-13 01:02:07,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-10-13 01:02:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 102 states have (on average 1.6274509803921569) internal successors, (166), 156 states have internal predecessors, (166), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 01:02:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:02:07,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:07,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:07,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:02:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:07,674 INFO L82 PathProgramCache]: Analyzing trace with hash 657805982, now seen corresponding path program 1 times [2021-10-13 01:02:07,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:07,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499940716] [2021-10-13 01:02:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:07,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:07,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:07,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:07,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:02:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:07,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:02:07,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:08,055 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 [2021-10-13 01:02:08,248 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 01:02:08,249 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 19 treesize of output 24 [2021-10-13 01:02:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:08,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:08,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:08,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499940716] [2021-10-13 01:02:08,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499940716] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:08,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:08,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 9 [2021-10-13 01:02:08,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373520488] [2021-10-13 01:02:08,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:02:08,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:08,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:02:08,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:02:08,822 INFO L87 Difference]: Start difference. First operand has 194 states, 102 states have (on average 1.6274509803921569) internal successors, (166), 156 states have internal predecessors, (166), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:02:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:09,959 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2021-10-13 01:02:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:02:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-10-13 01:02:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:09,971 INFO L225 Difference]: With dead ends: 97 [2021-10-13 01:02:09,972 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 01:02:09,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:02:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 01:02:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2021-10-13 01:02:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 42 states have (on average 1.619047619047619) internal successors, (68), 66 states have internal predecessors, (68), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 01:02:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2021-10-13 01:02:10,022 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 19 [2021-10-13 01:02:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:10,022 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2021-10-13 01:02:10,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:02:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2021-10-13 01:02:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:02:10,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:10,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:10,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:02:10,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:10,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:02:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:10,238 INFO L82 PathProgramCache]: Analyzing trace with hash 657805983, now seen corresponding path program 1 times [2021-10-13 01:02:10,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:10,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513763721] [2021-10-13 01:02:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:10,239 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:10,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:10,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:02:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:10,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 01:02:10,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:10,454 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 [2021-10-13 01:02:10,460 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 [2021-10-13 01:02:12,729 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 01:02:12,729 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 31 treesize of output 33 [2021-10-13 01:02:12,742 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 01:02:12,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-10-13 01:02:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:12,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:25,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:25,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513763721] [2021-10-13 01:02:25,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513763721] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:25,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:25,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-10-13 01:02:25,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519984152] [2021-10-13 01:02:25,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:02:25,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:02:25,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=259, Unknown=4, NotChecked=0, Total=306 [2021-10-13 01:02:25,632 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 7 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:06:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:53,398 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2021-10-13 01:06:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:06:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 7 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2021-10-13 01:06:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:53,413 INFO L225 Difference]: With dead ends: 97 [2021-10-13 01:06:53,413 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 01:06:53,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 42862.5ms TimeCoverageRelationStatistics Valid=113, Invalid=574, Unknown=15, NotChecked=0, Total=702 [2021-10-13 01:06:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 01:06:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2021-10-13 01:06:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 65 states have internal predecessors, (67), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 01:06:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2021-10-13 01:06:53,424 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 19 [2021-10-13 01:06:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:53,425 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2021-10-13 01:06:53,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 7 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:06:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2021-10-13 01:06:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 01:06:53,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:53,427 INFO L512 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] [2021-10-13 01:06:53,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 01:06:53,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:06:53,627 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:06:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1237369639, now seen corresponding path program 1 times [2021-10-13 01:06:53,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:06:53,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812735866] [2021-10-13 01:06:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:53,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:06:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:06:53,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:06:53,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:06:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:53,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 01:06:53,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:54,079 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 22 treesize of output 14 [2021-10-13 01:06:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:54,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:06:54,299 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-13 01:06:54,300 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 21 treesize of output 20 [2021-10-13 01:06:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:54,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:06:54,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812735866] [2021-10-13 01:06:54,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812735866] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:54,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:54,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 10 [2021-10-13 01:06:54,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452950027] [2021-10-13 01:06:54,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 01:06:54,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:06:54,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:06:54,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:06:54,383 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:07:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:05,281 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-10-13 01:07:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:07:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-10-13 01:07:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:05,291 INFO L225 Difference]: With dead ends: 116 [2021-10-13 01:07:05,291 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 01:07:05,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 488.2ms TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-10-13 01:07:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 01:07:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 83. [2021-10-13 01:07:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 64 states have internal predecessors, (66), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 01:07:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2021-10-13 01:07:05,302 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 22 [2021-10-13 01:07:05,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:05,303 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2021-10-13 01:07:05,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:07:05,303 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2021-10-13 01:07:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 01:07:05,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:05,304 INFO L512 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] [2021-10-13 01:07:05,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 01:07:05,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:07:05,507 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:07:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:05,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1237369638, now seen corresponding path program 1 times [2021-10-13 01:07:05,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:07:05,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482139555] [2021-10-13 01:07:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:05,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:07:05,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:07:05,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:07:05,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:07:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:05,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 01:07:05,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:05,802 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 [2021-10-13 01:07:05,823 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 [2021-10-13 01:07:06,036 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 32 treesize of output 30 [2021-10-13 01:07:06,044 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 20 treesize of output 18 [2021-10-13 01:07:08,347 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 01:07:08,348 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 34 treesize of output 36 [2021-10-13 01:07:08,365 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 01:07:08,366 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 28 treesize of output 28 [2021-10-13 01:07:08,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-10-13 01:07:08,724 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 23 treesize of output 15 [2021-10-13 01:07:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:08,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:07:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:19,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:07:19,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482139555] [2021-10-13 01:07:19,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482139555] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:07:19,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:07:19,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 23 [2021-10-13 01:07:19,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951283659] [2021-10-13 01:07:19,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 01:07:19,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:07:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 01:07:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=492, Unknown=2, NotChecked=0, Total=552 [2021-10-13 01:07:19,396 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:07:40,402 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$.offset| |c_entry_point_~#list_14~0.base|) |c_entry_point_~#list_14~0.offset|) |c_entry_point_~#list_14~0.offset|) (= (select (select |c_#memory_$Pointer$.base| |c_entry_point_~#list_14~0.base|) |c_entry_point_~#list_14~0.offset|) |c_entry_point_~#list_14~0.base|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_entry_point_~#list_14~0.base|))) (_ bv1 1))) (forall ((v_alloc_14_~list.base_BEFORE_CALL_12 (_ BitVec 32)) (v_alloc_14_~list.offset_BEFORE_CALL_9 (_ BitVec 32))) (or (exists ((|v_ldv_malloc_#res.base_16| (_ BitVec 32))) (and (or (not (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (exists ((v_ldv_malloc_~size_16 (_ BitVec 32))) (not (bvule (bvadd (select (select |c_#memory_$Pointer$.offset| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9) (_ bv8 32)) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_16| v_ldv_malloc_~size_16) (select (select |c_#memory_$Pointer$.base| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9)))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_16|)))))))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9))) (let ((.cse1 (bvadd .cse2 (_ bv8 32)))) (and (bvule .cse1 (select |c_#length| (select (select |c_#memory_$Pointer$.base| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9))) (bvule (bvadd .cse2 (_ bv4 32)) .cse1)))))) (forall ((v_alloc_14_~list.base_BEFORE_CALL_12 (_ BitVec 32)) (v_alloc_14_~list.offset_BEFORE_CALL_9 (_ BitVec 32)) (|v_ldv_malloc_#res.base_17| (_ BitVec 32))) (or (exists ((|v_ldv_malloc_#res.base_16| (_ BitVec 32))) (and (or (not (let ((.cse3 (select (select |c_#memory_$Pointer$.offset| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))) (exists ((v_ldv_malloc_~size_16 (_ BitVec 32))) (not (bvule (bvadd (select (select |c_#memory_$Pointer$.offset| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9) (_ bv8 32)) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_16| v_ldv_malloc_~size_16) (select (select |c_#memory_$Pointer$.base| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9)))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_16|)))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_17|)))))) (and (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9))) (bvule (bvadd .cse4 (_ bv4 32)) (bvadd .cse4 (_ bv8 32)))) (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd (select (select |c_#memory_$Pointer$.offset| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9) (_ bv8 32)) (select (store |c_#length| |v_ldv_malloc_#res.base_17| ldv_malloc_~size) (select (select |c_#memory_$Pointer$.base| v_alloc_14_~list.base_BEFORE_CALL_12) v_alloc_14_~list.offset_BEFORE_CALL_9))))))) (= (_ bv8 32) (select |c_#length| |c_entry_point_~#list_14~0.base|)) (= |c_entry_point_~#list_14~0.offset| (_ bv0 32))) is different from false [2021-10-13 01:11:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:11:58,953 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-10-13 01:11:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 01:11:58,955 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-10-13 01:11:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:11:58,956 INFO L225 Difference]: With dead ends: 86 [2021-10-13 01:11:58,956 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 01:11:58,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 61916.5ms TimeCoverageRelationStatistics Valid=134, Invalid=972, Unknown=20, NotChecked=64, Total=1190 [2021-10-13 01:11:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 01:11:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2021-10-13 01:11:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 63 states have internal predecessors, (65), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 01:11:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2021-10-13 01:11:58,965 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 22 [2021-10-13 01:11:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:11:58,965 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2021-10-13 01:11:58,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:11:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2021-10-13 01:11:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:11:58,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:11:58,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:11:58,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 01:11:59,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:11:59,181 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_unsafe_14Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:11:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash 707526811, now seen corresponding path program 1 times [2021-10-13 01:11:59,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:11:59,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464849677] [2021-10-13 01:11:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:59,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:11:59,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:11:59,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:11:59,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 01:11:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:59,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:11:59,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:59,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:11:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:59,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:11:59,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464849677] [2021-10-13 01:11:59,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464849677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:11:59,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:11:59,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 01:11:59,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515796178] [2021-10-13 01:11:59,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:11:59,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:11:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:11:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:11:59,636 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:11:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:11:59,663 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2021-10-13 01:11:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:11:59,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-10-13 01:11:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:11:59,668 INFO L225 Difference]: With dead ends: 89 [2021-10-13 01:11:59,668 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 01:11:59,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:11:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 01:11:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2021-10-13 01:11:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 45 states have (on average 1.511111111111111) internal successors, (68), 66 states have internal predecessors, (68), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-10-13 01:11:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2021-10-13 01:11:59,687 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 21 [2021-10-13 01:11:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:11:59,687 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2021-10-13 01:11:59,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:11:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2021-10-13 01:11:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:11:59,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:11:59,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:11:59,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:59,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:11:59,889 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_unsafe_14Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:11:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:59,890 INFO L82 PathProgramCache]: Analyzing trace with hash 511013306, now seen corresponding path program 1 times [2021-10-13 01:11:59,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:11:59,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650500303] [2021-10-13 01:11:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:59,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:11:59,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:11:59,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:11:59,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 01:12:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:00,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:12:00,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:00,128 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 [2021-10-13 01:12:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:00,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:00,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:12:00,494 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 44 treesize of output 48 [2021-10-13 01:12:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:00,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:00,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650500303] [2021-10-13 01:12:00,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650500303] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:00,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:00,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 7 [2021-10-13 01:12:00,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827835858] [2021-10-13 01:12:00,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:12:00,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:12:00,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:12:00,669 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 01:12:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:03,284 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2021-10-13 01:12:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:12:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 21 [2021-10-13 01:12:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:03,286 INFO L225 Difference]: With dead ends: 88 [2021-10-13 01:12:03,286 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 01:12:03,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 212.3ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:12:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 01:12:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2021-10-13 01:12:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 45 states have (on average 1.488888888888889) internal successors, (67), 65 states have internal predecessors, (67), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-10-13 01:12:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2021-10-13 01:12:03,291 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 21 [2021-10-13 01:12:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:03,292 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2021-10-13 01:12:03,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 01:12:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2021-10-13 01:12:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:12:03,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:03,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:12:03,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:03,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:03,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_unsafe_14Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:03,493 INFO L82 PathProgramCache]: Analyzing trace with hash 511013307, now seen corresponding path program 1 times [2021-10-13 01:12:03,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:03,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92961599] [2021-10-13 01:12:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:03,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:03,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:03,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:03,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 01:12:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:03,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:12:03,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:03,720 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 [2021-10-13 01:12:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:03,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:04,666 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:12:04,666 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 43 treesize of output 47 [2021-10-13 01:12:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:07,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:07,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92961599] [2021-10-13 01:12:07,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92961599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:07,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:07,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-10-13 01:12:07,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526457707] [2021-10-13 01:12:07,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 01:12:07,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:12:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:12:07,350 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:15,400 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2021-10-13 01:12:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:12:15,402 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 21 [2021-10-13 01:12:15,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:15,403 INFO L225 Difference]: With dead ends: 106 [2021-10-13 01:12:15,403 INFO L226 Difference]: Without dead ends: 106 [2021-10-13 01:12:15,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2153.5ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:12:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-13 01:12:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2021-10-13 01:12:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 77 states have internal predecessors, (83), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2021-10-13 01:12:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-10-13 01:12:15,412 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 21 [2021-10-13 01:12:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:15,413 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-10-13 01:12:15,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:15,413 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-10-13 01:12:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:12:15,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:15,414 INFO L512 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] [2021-10-13 01:12:15,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 01:12:15,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:15,628 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:15,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:15,629 INFO L82 PathProgramCache]: Analyzing trace with hash 296246924, now seen corresponding path program 1 times [2021-10-13 01:12:15,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:15,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758196012] [2021-10-13 01:12:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:15,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:15,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:15,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:15,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 01:12:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:15,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:12:15,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:15,907 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 [2021-10-13 01:12:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:16,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:16,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:16,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758196012] [2021-10-13 01:12:16,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758196012] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:16,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:16,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-13 01:12:16,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996062354] [2021-10-13 01:12:16,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:12:16,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:12:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:12:16,237 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:12:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:16,826 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2021-10-13 01:12:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:12:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-13 01:12:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:16,828 INFO L225 Difference]: With dead ends: 117 [2021-10-13 01:12:16,828 INFO L226 Difference]: Without dead ends: 117 [2021-10-13 01:12:16,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 212.3ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:12:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-13 01:12:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-10-13 01:12:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 86 states have internal predecessors, (96), 14 states have call successors, (14), 13 states have call predecessors, (14), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-10-13 01:12:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2021-10-13 01:12:16,837 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 23 [2021-10-13 01:12:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:16,837 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2021-10-13 01:12:16,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:12:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2021-10-13 01:12:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:12:16,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:16,839 INFO L512 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] [2021-10-13 01:12:16,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:17,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:17,051 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash 296246925, now seen corresponding path program 1 times [2021-10-13 01:12:17,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:17,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097867763] [2021-10-13 01:12:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:17,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:17,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:17,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:17,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 01:12:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:17,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 01:12:17,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:17,383 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 [2021-10-13 01:12:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:17,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:18,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:18,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097867763] [2021-10-13 01:12:18,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097867763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:18,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:18,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-10-13 01:12:18,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665413427] [2021-10-13 01:12:18,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:12:18,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:12:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:12:18,734 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:12:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:20,632 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2021-10-13 01:12:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:12:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-10-13 01:12:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:20,634 INFO L225 Difference]: With dead ends: 115 [2021-10-13 01:12:20,635 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 01:12:20,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1072.6ms TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:12:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 01:12:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2021-10-13 01:12:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 86 states have internal predecessors, (94), 14 states have call successors, (14), 13 states have call predecessors, (14), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-10-13 01:12:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-10-13 01:12:20,644 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 23 [2021-10-13 01:12:20,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:20,644 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-10-13 01:12:20,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:12:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-10-13 01:12:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:12:20,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:20,646 INFO L512 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] [2021-10-13 01:12:20,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:20,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:20,855 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:20,855 INFO L82 PathProgramCache]: Analyzing trace with hash 425329643, now seen corresponding path program 1 times [2021-10-13 01:12:20,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:20,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600036689] [2021-10-13 01:12:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:20,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:20,857 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:20,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 01:12:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:21,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:12:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:21,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:21,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:21,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600036689] [2021-10-13 01:12:21,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600036689] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:21,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:21,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 01:12:21,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712588559] [2021-10-13 01:12:21,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:12:21,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:12:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:12:21,376 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:12:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:21,406 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-10-13 01:12:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:12:21,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-13 01:12:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:21,407 INFO L225 Difference]: With dead ends: 96 [2021-10-13 01:12:21,407 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 01:12:21,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:12:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 01:12:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-10-13 01:12:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 72 states have internal predecessors, (78), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2021-10-13 01:12:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2021-10-13 01:12:21,413 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 23 [2021-10-13 01:12:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:21,413 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2021-10-13 01:12:21,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:12:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2021-10-13 01:12:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:12:21,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:21,415 INFO L512 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] [2021-10-13 01:12:21,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:21,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:21,619 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_unsafe_14Err2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:21,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1457519867, now seen corresponding path program 1 times [2021-10-13 01:12:21,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:21,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444851362] [2021-10-13 01:12:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:21,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:21,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:21,621 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:21,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 01:12:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:21,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 01:12:21,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:21,927 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 [2021-10-13 01:12:22,131 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 27 treesize of output 19 [2021-10-13 01:12:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:22,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:22,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:12:22,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 79 treesize of output 82 [2021-10-13 01:12:22,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:12:22,636 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 82 treesize of output 86 [2021-10-13 01:12:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:22,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:22,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444851362] [2021-10-13 01:12:22,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444851362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:22,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:22,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-13 01:12:22,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477313970] [2021-10-13 01:12:22,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:12:22,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:12:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:12:22,834 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:24,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:24,664 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2021-10-13 01:12:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:12:24,665 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 23 [2021-10-13 01:12:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:24,666 INFO L225 Difference]: With dead ends: 108 [2021-10-13 01:12:24,666 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 01:12:24,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 739.3ms TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:12:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 01:12:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2021-10-13 01:12:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 56 states have (on average 1.375) internal successors, (77), 72 states have internal predecessors, (77), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2021-10-13 01:12:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-10-13 01:12:24,675 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 23 [2021-10-13 01:12:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:24,675 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-10-13 01:12:24,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-10-13 01:12:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:12:24,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:24,683 INFO L512 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] [2021-10-13 01:12:24,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:24,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:24,894 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_unsafe_14Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:24,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1457519868, now seen corresponding path program 1 times [2021-10-13 01:12:24,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:24,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061317989] [2021-10-13 01:12:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:24,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:24,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:24,896 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:24,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 01:12:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:25,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 01:12:25,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:25,221 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 [2021-10-13 01:12:25,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-10-13 01:12:25,531 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 23 treesize of output 15 [2021-10-13 01:12:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:25,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:27,838 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:12:27,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 120 treesize of output 107 [2021-10-13 01:12:27,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:12:27,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 107 treesize of output 110 [2021-10-13 01:12:27,934 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:12:27,935 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 110 treesize of output 114 [2021-10-13 01:12:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:29,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:29,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061317989] [2021-10-13 01:12:29,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061317989] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:29,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:29,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-13 01:12:29,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564504882] [2021-10-13 01:12:29,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 01:12:29,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:29,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 01:12:29,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:12:29,652 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:41,046 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2021-10-13 01:12:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:12:41,048 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 23 [2021-10-13 01:12:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:41,049 INFO L225 Difference]: With dead ends: 107 [2021-10-13 01:12:41,049 INFO L226 Difference]: Without dead ends: 107 [2021-10-13 01:12:41,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3372.2ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-13 01:12:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-13 01:12:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2021-10-13 01:12:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 72 states have internal predecessors, (76), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2021-10-13 01:12:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2021-10-13 01:12:41,065 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 23 [2021-10-13 01:12:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:41,065 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2021-10-13 01:12:41,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2021-10-13 01:12:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 01:12:41,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:41,068 INFO L512 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] [2021-10-13 01:12:41,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:41,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:41,268 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1225454735, now seen corresponding path program 1 times [2021-10-13 01:12:41,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:41,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231892790] [2021-10-13 01:12:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:41,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:41,270 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:41,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 01:12:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:41,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:12:41,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:41,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:41,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:41,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231892790] [2021-10-13 01:12:41,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231892790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:41,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:41,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 01:12:41,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294112826] [2021-10-13 01:12:41,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:12:41,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:41,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:12:41,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:12:41,790 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:12:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:42,064 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-10-13 01:12:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:12:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-10-13 01:12:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:42,066 INFO L225 Difference]: With dead ends: 95 [2021-10-13 01:12:42,066 INFO L226 Difference]: Without dead ends: 95 [2021-10-13 01:12:42,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:12:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-13 01:12:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-13 01:12:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 71 states have internal predecessors, (75), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2021-10-13 01:12:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2021-10-13 01:12:42,070 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 25 [2021-10-13 01:12:42,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:42,071 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2021-10-13 01:12:42,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:12:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2021-10-13 01:12:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 01:12:42,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:42,072 INFO L512 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] [2021-10-13 01:12:42,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:42,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:42,272 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:42,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1225454736, now seen corresponding path program 1 times [2021-10-13 01:12:42,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:42,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591509119] [2021-10-13 01:12:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:42,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:42,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:42,274 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:42,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 01:12:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:42,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:12:42,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:42,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:43,208 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 [2021-10-13 01:12:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:43,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:43,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591509119] [2021-10-13 01:12:43,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591509119] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:43,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:43,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-10-13 01:12:43,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198220167] [2021-10-13 01:12:43,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:12:43,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:43,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:12:43,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:12:43,632 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 18 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:12:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:44,437 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2021-10-13 01:12:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:12:44,440 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2021-10-13 01:12:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:44,441 INFO L225 Difference]: With dead ends: 94 [2021-10-13 01:12:44,441 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 01:12:44,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 883.3ms TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:12:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 01:12:44,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-13 01:12:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 70 states have internal predecessors, (74), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2021-10-13 01:12:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2021-10-13 01:12:44,445 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 25 [2021-10-13 01:12:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:44,445 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2021-10-13 01:12:44,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:12:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2021-10-13 01:12:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 01:12:44,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:44,446 INFO L512 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] [2021-10-13 01:12:44,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:44,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:44,655 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_list_delErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:44,656 INFO L82 PathProgramCache]: Analyzing trace with hash -698128334, now seen corresponding path program 1 times [2021-10-13 01:12:44,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:44,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570594341] [2021-10-13 01:12:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:44,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:44,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:44,657 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:44,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 01:12:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:45,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 01:12:45,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:45,233 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 15 treesize of output 7 [2021-10-13 01:12:45,240 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 15 treesize of output 7 [2021-10-13 01:12:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:45,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:12:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:12:55,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:12:55,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570594341] [2021-10-13 01:12:55,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570594341] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:12:55,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:12:55,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 01:12:55,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28649752] [2021-10-13 01:12:55,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:12:55,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:12:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:12:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=147, Unknown=4, NotChecked=0, Total=182 [2021-10-13 01:12:55,424 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:12:58,663 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-10-13 01:12:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:12:58,664 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 28 [2021-10-13 01:12:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:12:58,665 INFO L225 Difference]: With dead ends: 99 [2021-10-13 01:12:58,665 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 01:12:58,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 11961.8ms TimeCoverageRelationStatistics Valid=82, Invalid=293, Unknown=5, NotChecked=0, Total=380 [2021-10-13 01:12:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 01:12:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2021-10-13 01:12:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 67 states have internal predecessors, (68), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-10-13 01:12:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2021-10-13 01:12:58,670 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 28 [2021-10-13 01:12:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:12:58,670 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2021-10-13 01:12:58,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 01:12:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2021-10-13 01:12:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 01:12:58,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:12:58,671 INFO L512 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] [2021-10-13 01:12:58,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 01:12:58,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:12:58,888 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 73 more)] === [2021-10-13 01:12:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:12:58,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1642723717, now seen corresponding path program 1 times [2021-10-13 01:12:58,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:12:58,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215787961] [2021-10-13 01:12:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:12:58,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:12:58,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:12:58,891 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:12:58,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 01:12:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:12:59,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:12:59,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:12:59,357 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-13 01:12:59,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-13 01:12:59,622 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 0 case distinctions, treesize of input 14 treesize of output 11 [2021-10-13 01:13:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:13:04,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:13:17,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:13:17,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215787961] [2021-10-13 01:13:17,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store |v_old(#valid)_BEFORE_CALL_11| |v_entry_point_~#list_14~0.base_23| (_ bv0 1)) v_prenex_10)=(= (select (store |v_old(#valid)_BEFORE_CALL_11| |v_entry_point_~#list_14~0.base_23| (_ bv0 1)) v_antiDerIndex_entry0_1) (select v_prenex_10 v_antiDerIndex_entry0_1))} [2021-10-13 01:13:17,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [537224366] [2021-10-13 01:13:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:17,831 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 01:13:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/cvc4 [2021-10-13 01:13:17,832 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 01:13:17,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-13 01:13:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:13:18,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 01:13:18,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:13:18,463 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-13 01:13:18,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2021-10-13 01:13:18,625 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 7 treesize of output 3 [2021-10-13 01:13:18,697 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 0 case distinctions, treesize of input 14 treesize of output 11 [2021-10-13 01:13:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:13:23,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:13:23,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-13 01:13:33,876 INFO L354 Elim1Store]: treesize reduction 15, result has 79.5 percent of original size [2021-10-13 01:13:33,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 112 [2021-10-13 01:13:34,883 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 10 treesize of output 8 [2021-10-13 01:13:35,684 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:13:35,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 100 [2021-10-13 01:13:37,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_prenex_12 [2021-10-13 01:13:37,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250082908] [2021-10-13 01:13:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:13:37,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:13:37,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:13:37,443 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:13:37,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 01:13:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:13:38,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:13:38,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:13:38,211 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 0 case distinctions, treesize of input 13 treesize of output 10 [2021-10-13 01:13:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:13:40,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:13:51,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store |v_old(#valid)_BEFORE_CALL_25| |v_entry_point_~#list_14~0.base_23| (_ bv0 1)) v_prenex_17)=(= (select v_prenex_17 v_antiDerIndex_entry0_5) (select (store |v_old(#valid)_BEFORE_CALL_25| |v_entry_point_~#list_14~0.base_23| (_ bv0 1)) v_antiDerIndex_entry0_5))} [2021-10-13 01:13:51,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:13:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 01:13:51,287 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-13 01:13:51,287 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 01:13:51,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:13:51,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-13 01:13:51,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-13 01:13:51,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-13 01:13:51,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-13 01:13:51,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_14Err0REQUIRES_VIOLATION [2021-10-13 01:13:51,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_14Err1REQUIRES_VIOLATION [2021-10-13 01:13:51,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_14Err2REQUIRES_VIOLATION [2021-10-13 01:13:51,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_14Err3REQUIRES_VIOLATION [2021-10-13 01:13:51,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_14Err4REQUIRES_VIOLATION [2021-10-13 01:13:51,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_unsafe_14Err5REQUIRES_VIOLATION [2021-10-13 01:13:51,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-13 01:13:51,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-13 01:13:51,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-13 01:13:51,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-13 01:13:51,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:13:51,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 01:13:51,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 01:13:51,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-13 01:13:51,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-13 01:13:51,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 01:13:51,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-13 01:13:51,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 01:13:51,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:13:51,931 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:13:51,936 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 01:13:51,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:13:51 BoogieIcfgContainer [2021-10-13 01:13:51,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:13:51,947 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:13:51,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:13:51,948 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:13:51,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:02:07" (3/4) ... [2021-10-13 01:13:51,951 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:13:51,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:13:51,952 INFO L168 Benchmark]: Toolchain (without parser) took 706848.54 ms. Allocated memory was 60.8 MB in the beginning and 119.5 MB in the end (delta: 58.7 MB). Free memory was 39.2 MB in the beginning and 34.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:51,953 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:13:51,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 818.27 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.0 MB in the beginning and 54.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:51,955 INFO L168 Benchmark]: Boogie Preprocessor took 112.58 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 49.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:51,956 INFO L168 Benchmark]: RCFGBuilder took 1491.59 ms. Allocated memory is still 73.4 MB. Free memory was 49.3 MB in the beginning and 43.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:51,956 INFO L168 Benchmark]: TraceAbstraction took 704414.03 ms. Allocated memory was 73.4 MB in the beginning and 119.5 MB in the end (delta: 46.1 MB). Free memory was 42.7 MB in the beginning and 34.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:13:51,956 INFO L168 Benchmark]: Witness Printer took 4.48 ms. Allocated memory is still 119.5 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:13:51,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 818.27 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.0 MB in the beginning and 54.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 112.58 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 49.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1491.59 ms. Allocated memory is still 73.4 MB. Free memory was 49.3 MB in the beginning and 43.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 704414.03 ms. Allocated memory was 73.4 MB in the beginning and 119.5 MB in the end (delta: 46.1 MB). Free memory was 42.7 MB in the beginning and 34.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.48 ms. Allocated memory is still 119.5 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 779]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 779. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L780] CALL entry_point() [L775] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; [L776] CALL alloc_14(&list_14) [L762] CALL, EXPR ldv_malloc(sizeof(struct A14)) [L526] COND FALSE !(__VERIFIER_nondet_int()) [L529] return 0; [L762] RET, EXPR ldv_malloc(sizeof(struct A14)) [L762] struct A14 *p = (struct A14 *)ldv_malloc(sizeof(struct A14)); [L763] COND FALSE !(\read(*p)) [L776] RET alloc_14(&list_14) [L777] CALL free_unsafe_14(&list_14) [L768] struct A14 *p; [L769] struct A14 *n; [L770] EXPR (plist)->next [L770] const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); [L770] p = ({ const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((plist)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );}) [L770] EXPR (p)->list.next [L770] const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); [L770] n = ({ const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); (typeof(*(p)) *)( (char *)__mptr - ((size_t) &((typeof(*(p)) *)0)->list) );}) [L770] COND FALSE !(&p->list != (plist)) [L777] RET free_unsafe_14(&list_14) [L775] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; [L780] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 49 procedures, 356 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 704322.4ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 43.5ms, AutomataDifference: 590222.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 924 SDtfs, 1424 SDslu, 3825 SDs, 0 SdLazy, 5487 SolverSat, 439 SolverUnsat, 267 SolverUnknown, 0 SolverNotchecked, 497710.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 732 GetRequests, 479 SyntacticMatches, 26 SemanticMatches, 227 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 126416.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=0, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 147.4ms AutomataMinimizationTime, 15 MinimizatonAttempts, 108 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 146.8ms SsaConstructionTime, 592.8ms SatisfiabilityAnalysisTime, 53735.2ms InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 646 ConstructedInterpolants, 76 QuantifiedInterpolants, 5907 SizeOfPredicates, 96 NumberOfNonLiveVariables, 1947 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:13:52,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feb5ab9-6141-4026-9b47-1d20decd6b2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...