./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/verifythis/tree_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/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_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b88b6d7568fe134c0afce7011b232be11d0c7ffd ................................................................................................................................. 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_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/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_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b88b6d7568fe134c0afce7011b232be11d0c7ffd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:01:51,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:01:51,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:01:51,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:01:51,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:01:51,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:01:51,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:01:51,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:01:51,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:01:51,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:01:51,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:01:51,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:01:51,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:01:51,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:01:51,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:01:51,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:01:51,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:01:51,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:01:51,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:01:51,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:01:51,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:01:51,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:01:51,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:01:51,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:01:51,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:01:51,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:01:51,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:01:51,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:01:51,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:01:51,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:01:51,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:01:51,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:01:51,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:01:51,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:01:51,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:01:51,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:01:51,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:01:51,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:01:51,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:01:51,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:01:51,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:01:51,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-13 01:01:51,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:01:51,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:01:51,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:01:51,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:01:51,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:01:51,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:01:51,546 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:01:51,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:01:51,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:01:51,547 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:01:51,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:01:51,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:01:51,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:01:51,548 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:01:51,548 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:01:51,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:01:51,557 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:01:51,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:01:51,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:01:51,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:01:51,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:01:51,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:01:51,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:51,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:01:51,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:01:51,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:01:51,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:01:51,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:01:51,571 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_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b88b6d7568fe134c0afce7011b232be11d0c7ffd [2021-10-13 01:01:51,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:01:51,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:01:51,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:01:51,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:01:51,896 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:01:51,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/verifythis/tree_max.c [2021-10-13 01:01:51,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/f0d364ef8/7f21ff1e796244bdb9c1b121df9c8753/FLAGd46e6c57d [2021-10-13 01:01:52,647 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:01:52,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/sv-benchmarks/c/verifythis/tree_max.c [2021-10-13 01:01:52,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/f0d364ef8/7f21ff1e796244bdb9c1b121df9c8753/FLAGd46e6c57d [2021-10-13 01:01:53,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/f0d364ef8/7f21ff1e796244bdb9c1b121df9c8753 [2021-10-13 01:01:53,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:01:53,020 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:01:53,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:53,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:01:53,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:01:53,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:53" (1/1) ... [2021-10-13 01:01:53,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7e5d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:53, skipping insertion in model container [2021-10-13 01:01:53,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:53" (1/1) ... [2021-10-13 01:01:53,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:01:53,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:01:53,251 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-13 01:01:53,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:53,316 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 01:01:53,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b025670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:53, skipping insertion in model container [2021-10-13 01:01:53,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:53,319 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 01:01:53,323 INFO L168 Benchmark]: Toolchain (without parser) took 301.36 ms. Allocated memory is still 94.4 MB. Free memory was 60.8 MB in the beginning and 71.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:01:53,326 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:01:53,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.10 ms. Allocated memory is still 94.4 MB. Free memory was 60.6 MB in the beginning and 71.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:01:53,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.10 ms. Allocated memory is still 94.4 MB. Free memory was 60.6 MB in the beginning and 71.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 27]: 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 01:01:56,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:01:56,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:01:56,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:01:56,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:01:56,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:01:56,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:01:56,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:01:56,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:01:56,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:01:56,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:01:56,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:01:56,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:01:56,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:01:56,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:01:56,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:01:56,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:01:56,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:01:56,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:01:56,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:01:56,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:01:56,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:01:56,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:01:56,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:01:56,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:01:56,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:01:56,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:01:56,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:01:56,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:01:56,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:01:56,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:01:56,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:01:56,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:01:56,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:01:56,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:01:56,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:01:56,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:01:56,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:01:56,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:01:56,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:01:56,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:01:56,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-13 01:01:56,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:01:56,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:01:56,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:01:56,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:01:56,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:01:56,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:01:56,268 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:01:56,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:01:56,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:01:56,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:01:56,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:01:56,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:01:56,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:01:56,271 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 01:01:56,272 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 01:01:56,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:01:56,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 01:01:56,273 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:01:56,273 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:01:56,273 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:01:56,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:01:56,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:01:56,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:01:56,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:01:56,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:56,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:01:56,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:01:56,275 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:01:56,276 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:01:56,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:01:56,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:01:56,277 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_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b88b6d7568fe134c0afce7011b232be11d0c7ffd [2021-10-13 01:01:56,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:01:56,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:01:56,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:01:56,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:01:56,821 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:01:56,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/verifythis/tree_max.c [2021-10-13 01:01:56,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/3565316c3/4f25d66923c645b3ab13c3357b84bc41/FLAG8dd8dd9ff [2021-10-13 01:01:57,556 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:01:57,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/sv-benchmarks/c/verifythis/tree_max.c [2021-10-13 01:01:57,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/3565316c3/4f25d66923c645b3ab13c3357b84bc41/FLAG8dd8dd9ff [2021-10-13 01:01:57,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/data/3565316c3/4f25d66923c645b3ab13c3357b84bc41 [2021-10-13 01:01:57,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:01:57,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 01:01:57,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:57,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:01:57,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:01:57,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:57" (1/1) ... [2021-10-13 01:01:57,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165a8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:57, skipping insertion in model container [2021-10-13 01:01:57,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:57" (1/1) ... [2021-10-13 01:01:57,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:01:57,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:01:58,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-13 01:01:58,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:58,197 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 01:01:58,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:01:58,224 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-13 01:01:58,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:58,244 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:01:58,260 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-13 01:01:58,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:58,291 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:01:58,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58 WrapperNode [2021-10-13 01:01:58,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:58,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:01:58,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:01:58,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:01:58,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:01:58,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:01:58,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:01:58,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:01:58,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (1/1) ... [2021-10-13 01:01:58,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:01:58,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:01:58,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:01:58,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 01:01:58,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:01:58,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-10-13 01:01:58,438 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 01:01:58,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-13 01:01:58,438 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-10-13 01:01:58,439 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-10-13 01:01:58,439 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-10-13 01:01:58,439 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2021-10-13 01:01:58,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 01:01:58,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 01:01:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 01:01:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 01:01:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-10-13 01:01:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 01:01:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-10-13 01:01:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 01:01:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 01:01:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:01:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-13 01:01:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-10-13 01:01:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 01:01:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 01:01:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 01:01:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-10-13 01:01:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 01:01:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 01:01:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-10-13 01:01:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure task [2021-10-13 01:01:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 01:01:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 01:01:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:01:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:01:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 01:01:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 01:01:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:01:59,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:01:59,109 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-13 01:01:59,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:59 BoogieIcfgContainer [2021-10-13 01:01:59,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:01:59,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:01:59,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:01:59,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:01:59,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:01:57" (1/3) ... [2021-10-13 01:01:59,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121541c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:59, skipping insertion in model container [2021-10-13 01:01:59,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:58" (2/3) ... [2021-10-13 01:01:59,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121541c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:59, skipping insertion in model container [2021-10-13 01:01:59,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:59" (3/3) ... [2021-10-13 01:01:59,120 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max.c [2021-10-13 01:01:59,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:01:59,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-13 01:01:59,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:01:59,193 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 01:01:59,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-13 01:01:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 61 states have internal predecessors, (68), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-13 01:01:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 01:01:59,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:59,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:01:59,224 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting nondet_treeErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-13 01:01:59,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:59,231 INFO L82 PathProgramCache]: Analyzing trace with hash -21695061, now seen corresponding path program 1 times [2021-10-13 01:01:59,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:01:59,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516420986] [2021-10-13 01:01:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:01:59,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:01:59,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:01:59,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:01:59,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:01:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:01:59,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:01:59,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:01:59,522 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 01:01:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:01:59,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:01:59,622 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 01:01:59,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:01:59,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516420986] [2021-10-13 01:01:59,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516420986] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:01:59,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:01:59,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 01:01:59,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554927633] [2021-10-13 01:01:59,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:01:59,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:01:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:01:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:01:59,652 INFO L87 Difference]: Start difference. First operand has 82 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 61 states have internal predecessors, (68), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:01:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:01:59,804 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2021-10-13 01:01:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:01:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-13 01:01:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:01:59,818 INFO L225 Difference]: With dead ends: 83 [2021-10-13 01:01:59,818 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 01:01:59,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:01:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 01:01:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-10-13 01:01:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 40 states have (on average 1.6) internal successors, (64), 58 states have internal predecessors, (64), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-13 01:01:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-10-13 01:01:59,875 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 8 [2021-10-13 01:01:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:01:59,875 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-10-13 01:01:59,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:01:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-10-13 01:01:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 01:01:59,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:59,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:01:59,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:02:00,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:00,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting nondet_treeErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-13 01:02:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash -21695060, now seen corresponding path program 1 times [2021-10-13 01:02:00,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:00,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488569342] [2021-10-13 01:02:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:00,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:00,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:00,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:02:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:00,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:02:00,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:00,286 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 01:02:00,305 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 01:02:00,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:00,440 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 01:02:00,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:00,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488569342] [2021-10-13 01:02:00,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488569342] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:00,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:00,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 01:02:00,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666051825] [2021-10-13 01:02:00,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:02:00,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:00,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:02:00,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:02:00,446 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:02:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:00,708 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2021-10-13 01:02:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:00,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-13 01:02:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:00,715 INFO L225 Difference]: With dead ends: 77 [2021-10-13 01:02:00,715 INFO L226 Difference]: Without dead ends: 77 [2021-10-13 01:02:00,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:02:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-13 01:02:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-13 01:02:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.575) internal successors, (63), 57 states have internal predecessors, (63), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-13 01:02:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2021-10-13 01:02:00,747 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 8 [2021-10-13 01:02:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:00,748 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2021-10-13 01:02:00,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:02:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2021-10-13 01:02:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 01:02:00,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:00,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:00,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:02:00,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:00,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting maxErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-13 01:02:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1329093118, now seen corresponding path program 1 times [2021-10-13 01:02:00,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:00,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219886004] [2021-10-13 01:02:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:00,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:00,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:00,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:00,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:02:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:01,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:02:01,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:01,250 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 01:02:01,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:01,395 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 01:02:01,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:01,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219886004] [2021-10-13 01:02:01,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219886004] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:01,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:01,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-13 01:02:01,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829859621] [2021-10-13 01:02:01,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:02:01,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:02:01,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:02:01,400 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:02:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:01,542 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2021-10-13 01:02:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:02:01,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-10-13 01:02:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:01,545 INFO L225 Difference]: With dead ends: 93 [2021-10-13 01:02:01,545 INFO L226 Difference]: Without dead ends: 93 [2021-10-13 01:02:01,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 106.5ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:02:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-13 01:02:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-10-13 01:02:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 65 states have internal predecessors, (70), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-10-13 01:02:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2021-10-13 01:02:01,561 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 15 [2021-10-13 01:02:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:01,562 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2021-10-13 01:02:01,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:02:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2021-10-13 01:02:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 01:02:01,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:01,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:01,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:02:01,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:01,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting nondet_treeErr2REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-13 01:02:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:01,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1115064036, now seen corresponding path program 1 times [2021-10-13 01:02:01,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:01,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327794454] [2021-10-13 01:02:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:01,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:01,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:01,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:01,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:02:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:01,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:02:01,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:01,947 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 01:02:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:02,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:02,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:02,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327794454] [2021-10-13 01:02:02,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327794454] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:02,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:02,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 01:02:02,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793859656] [2021-10-13 01:02:02,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:02:02,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:02,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:02:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:02:02,193 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:02:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:02,610 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2021-10-13 01:02:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:02:02,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2021-10-13 01:02:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:02,613 INFO L225 Difference]: With dead ends: 90 [2021-10-13 01:02:02,613 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 01:02:02,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:02:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 01:02:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-13 01:02:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 62 states have internal predecessors, (67), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2021-10-13 01:02:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2021-10-13 01:02:02,638 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 14 [2021-10-13 01:02:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:02,639 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2021-10-13 01:02:02,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:02:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2021-10-13 01:02:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 01:02:02,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:02,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:02,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:02:02,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:02,864 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-13 01:02:02,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:02,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1115064035, now seen corresponding path program 1 times [2021-10-13 01:02:02,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:02,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731812623] [2021-10-13 01:02:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:02,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:02,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:02,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 01:02:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:03,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:02:03,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:03,039 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 01:02:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:03,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:03,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:03,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731812623] [2021-10-13 01:02:03,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731812623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:03,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:03,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 01:02:03,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210309007] [2021-10-13 01:02:03,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:02:03,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:03,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:02:03,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:02:03,603 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:02:04,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:04,475 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2021-10-13 01:02:04,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:02:04,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2021-10-13 01:02:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:04,479 INFO L225 Difference]: With dead ends: 98 [2021-10-13 01:02:04,479 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 01:02:04,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:02:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 01:02:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-13 01:02:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 64 states have internal predecessors, (70), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2021-10-13 01:02:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-10-13 01:02:04,492 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 14 [2021-10-13 01:02:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:04,493 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-10-13 01:02:04,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 01:02:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-10-13 01:02:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:02:04,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:04,495 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 01:02:04,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:02:04,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:04,714 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-13 01:02:04,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1586448910, now seen corresponding path program 1 times [2021-10-13 01:02:04,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:04,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200691691] [2021-10-13 01:02:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:04,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:04,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:04,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:04,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 01:02:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:04,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:02:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:05,061 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 01:02:05,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:05,222 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 01:02:05,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:05,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200691691] [2021-10-13 01:02:05,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200691691] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:05,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:05,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-13 01:02:05,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307373600] [2021-10-13 01:02:05,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:02:05,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:02:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:02:05,226 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:02:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:05,343 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-10-13 01:02:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:02:05,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-10-13 01:02:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:05,345 INFO L225 Difference]: With dead ends: 96 [2021-10-13 01:02:05,346 INFO L226 Difference]: Without dead ends: 83 [2021-10-13 01:02:05,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:02:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-13 01:02:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-10-13 01:02:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 59 states have internal predecessors, (65), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2021-10-13 01:02:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2021-10-13 01:02:05,356 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 21 [2021-10-13 01:02:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:05,357 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2021-10-13 01:02:05,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 01:02:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2021-10-13 01:02:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 01:02:05,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:05,359 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:05,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 01:02:05,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:05,573 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-13 01:02:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:05,573 INFO L82 PathProgramCache]: Analyzing trace with hash -885339599, now seen corresponding path program 1 times [2021-10-13 01:02:05,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:05,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981770683] [2021-10-13 01:02:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:05,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:05,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:05,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:05,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 01:02:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:05,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 01:02:05,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:05,885 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 01:02:05,892 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 01:02:06,259 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 01:02:06,259 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 29 treesize of output 31 [2021-10-13 01:02:06,271 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 01:02:06,272 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 01:02:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:02:06,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:24,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:02:24,375 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 124 treesize of output 128 [2021-10-13 01:02:24,424 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:02:24,425 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 128 treesize of output 132 [2021-10-13 01:02:28,264 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:02:28,265 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 118 treesize of output 122 [2021-10-13 01:02:28,293 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:02:28,294 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 122 treesize of output 126 [2021-10-13 01:02:33,381 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_nondet_tree_~n~0.offset_BEFORE_CALL_4 (_ BitVec 32)) (v_nondet_tree_~n~0.base_20 (_ BitVec 32)) (v_nondet_tree_~n~0.base_BEFORE_CALL_6 (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4))) (and (bvule .cse0 (select (store |c_#length| v_nondet_tree_~n~0.base_20 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_6)) (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4) .cse0))) (not (= (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_nondet_tree_~n~0.base_20)))))) (_ bv0 1))) (exists ((v_nondet_tree_~n~0.base_19 (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4))) (or (not (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4) .cse1)) (not (bvule .cse1 (select (store |c_old(#length)| v_nondet_tree_~n~0.base_19 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_6))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_nondet_tree_~n~0.base_19)))))))))) is different from false [2021-10-13 01:02:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:02:33,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:33,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981770683] [2021-10-13 01:02:33,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981770683] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:02:33,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:02:33,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-13 01:02:33,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299657166] [2021-10-13 01:02:33,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 01:02:33,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:02:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=62, Unknown=7, NotChecked=16, Total=110 [2021-10-13 01:02:33,588 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 01:02:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:43,828 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-13 01:02:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:02:43,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 28 [2021-10-13 01:02:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:43,832 INFO L225 Difference]: With dead ends: 12 [2021-10-13 01:02:43,832 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:02:43,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 17225.3ms TimeCoverageRelationStatistics Valid=32, Invalid=75, Unknown=7, NotChecked=18, Total=132 [2021-10-13 01:02:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:02:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:02:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:02:43,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-13 01:02:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:43,834 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:02:43,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 01:02:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:02:43,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:02:43,837 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:02:43,838 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr0REQUIRES_VIOLATION [2021-10-13 01:02:43,838 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr1REQUIRES_VIOLATION [2021-10-13 01:02:43,839 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr2REQUIRES_VIOLATION [2021-10-13 01:02:43,839 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr3REQUIRES_VIOLATION [2021-10-13 01:02:43,839 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr4REQUIRES_VIOLATION [2021-10-13 01:02:43,839 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr5REQUIRES_VIOLATION [2021-10-13 01:02:43,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr0REQUIRES_VIOLATION [2021-10-13 01:02:43,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr1REQUIRES_VIOLATION [2021-10-13 01:02:43,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr2REQUIRES_VIOLATION [2021-10-13 01:02:43,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr3REQUIRES_VIOLATION [2021-10-13 01:02:43,840 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr4REQUIRES_VIOLATION [2021-10-13 01:02:43,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr5REQUIRES_VIOLATION [2021-10-13 01:02:43,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr0REQUIRES_VIOLATION [2021-10-13 01:02:43,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr1REQUIRES_VIOLATION [2021-10-13 01:02:43,841 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr2REQUIRES_VIOLATION [2021-10-13 01:02:43,842 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr3REQUIRES_VIOLATION [2021-10-13 01:02:43,842 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr4REQUIRES_VIOLATION [2021-10-13 01:02:43,842 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr5REQUIRES_VIOLATION [2021-10-13 01:02:43,842 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 01:02:43,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 01:02:44,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:44,054 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:02:44,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:02:44 BoogieIcfgContainer [2021-10-13 01:02:44,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:02:44,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:02:44,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:02:44,057 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:02:44,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:59" (3/4) ... [2021-10-13 01:02:44,061 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:02:44,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-13 01:02:44,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-13 01:02:44,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure task [2021-10-13 01:02:44,068 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_tree [2021-10-13 01:02:44,068 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure max [2021-10-13 01:02:44,068 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-10-13 01:02:44,068 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-13 01:02:44,069 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-10-13 01:02:44,069 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-10-13 01:02:44,076 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 01:02:44,076 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 01:02:44,077 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 01:02:44,077 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:02:44,152 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:02:44,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:02:44,153 INFO L168 Benchmark]: Toolchain (without parser) took 46309.63 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 64.0 MB in the beginning and 46.4 MB in the end (delta: 17.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,154 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:02:44,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.32 ms. Allocated memory is still 83.9 MB. Free memory was 63.8 MB in the beginning and 52.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,156 INFO L168 Benchmark]: Boogie Preprocessor took 55.63 ms. Allocated memory is still 83.9 MB. Free memory was 52.1 MB in the beginning and 50.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,157 INFO L168 Benchmark]: RCFGBuilder took 762.00 ms. Allocated memory is still 83.9 MB. Free memory was 50.0 MB in the beginning and 62.3 MB in the end (delta: -12.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,158 INFO L168 Benchmark]: TraceAbstraction took 44942.67 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 61.9 MB in the beginning and 50.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,159 INFO L168 Benchmark]: Witness Printer took 95.40 ms. Allocated memory is still 111.1 MB. Free memory was 50.4 MB in the beginning and 46.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,161 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 54.5 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.32 ms. Allocated memory is still 83.9 MB. Free memory was 63.8 MB in the beginning and 52.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.63 ms. Allocated memory is still 83.9 MB. Free memory was 52.1 MB in the beginning and 50.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 762.00 ms. Allocated memory is still 83.9 MB. Free memory was 50.0 MB in the beginning and 62.3 MB in the end (delta: -12.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44942.67 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 61.9 MB in the beginning and 50.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * Witness Printer took 95.40 ms. Allocated memory is still 111.1 MB. Free memory was 50.4 MB in the beginning and 46.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * 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 - PositiveResult [Line: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 39]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 39]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 40]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 40]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 41]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 41]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 50]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 50]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 53]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 53]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 55]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 55]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 89 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 44870.2ms, OverallIterations: 7, TraceHistogramMax: 3, EmptinessCheckTime: 23.2ms, AutomataDifference: 12272.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 477 SDtfs, 151 SDslu, 1238 SDs, 0 SdLazy, 513 SolverSat, 60 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11621.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 17660.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=3, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 133.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 123.3ms SsaConstructionTime, 352.6ms SatisfiabilityAnalysisTime, 29850.2ms InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 202 ConstructedInterpolants, 31 QuantifiedInterpolants, 1542 SizeOfPredicates, 11 NumberOfNonLiveVariables, 694 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 18/36 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 - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 01:02:44,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef4ea86-7063-4f4c-9a4f-fc672aff5d7c/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...