./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf ................................................................................................................................... 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_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:48:31,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:48:31,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:48:31,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:48:31,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:48:31,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:48:31,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:48:31,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:48:31,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:48:31,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:48:31,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:48:31,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:48:31,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:48:31,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:48:31,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:48:31,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:48:31,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:48:31,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:48:31,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:48:31,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:48:31,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:48:31,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:48:31,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:48:31,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:48:31,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:48:31,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:48:31,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:48:31,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:48:31,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:48:31,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:48:31,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:48:31,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:48:31,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:48:31,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:48:31,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:48:31,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:48:31,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:48:31,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:48:31,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:48:31,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:48:31,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:48:31,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 22:48:31,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:48:31,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:48:31,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:48:31,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:48:31,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:48:31,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:48:31,979 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:48:31,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:48:31,979 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:48:31,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:48:31,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:48:31,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:48:31,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:48:31,982 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:48:31,982 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:48:31,982 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 22:48:31,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:48:31,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:48:31,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:48:31,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:48:31,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:48:31,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:48:31,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:48:31,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:48:31,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:48:31,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:48:31,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:48:31,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:48:31,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:48:31,987 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_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-10-28 22:48:32,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:48:32,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:48:32,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:48:32,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:48:32,318 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:48:32,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 22:48:32,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/b4e16dc57/5e56883fd5614c6f98e862d0897a2a1f/FLAG3a4a6d044 [2021-10-28 22:48:33,043 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:48:33,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 22:48:33,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/b4e16dc57/5e56883fd5614c6f98e862d0897a2a1f/FLAG3a4a6d044 [2021-10-28 22:48:33,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/b4e16dc57/5e56883fd5614c6f98e862d0897a2a1f [2021-10-28 22:48:33,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:48:33,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:48:33,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:48:33,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:48:33,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:48:33,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:33" (1/1) ... [2021-10-28 22:48:33,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c9f523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:33, skipping insertion in model container [2021-10-28 22:48:33,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:33" (1/1) ... [2021-10-28 22:48:33,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:48:33,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:48:33,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:48:33,758 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) [2021-10-28 22:48:33,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37eaacc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:33, skipping insertion in model container [2021-10-28 22:48:33,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:48:33,761 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 22:48:33,763 INFO L168 Benchmark]: Toolchain (without parser) took 474.71 ms. Allocated memory is still 115.3 MB. Free memory was 79.6 MB in the beginning and 88.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:33,765 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:48:33,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.13 ms. Allocated memory is still 115.3 MB. Free memory was 79.4 MB in the beginning and 88.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:33,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 467.13 ms. Allocated memory is still 115.3 MB. Free memory was 79.4 MB in the beginning and 88.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: 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-b2eff8b [2021-10-28 22:48:36,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:48:36,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:48:36,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:48:36,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:48:36,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:48:36,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:48:36,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:48:36,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:48:36,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:48:36,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:48:36,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:48:36,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:48:36,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:48:36,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:48:36,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:48:36,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:48:36,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:48:36,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:48:36,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:48:36,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:48:36,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:48:36,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:48:36,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:48:36,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:48:36,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:48:36,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:48:36,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:48:36,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:48:36,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:48:36,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:48:36,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:48:36,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:48:36,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:48:36,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:48:36,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:48:36,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:48:36,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:48:36,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:48:36,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:48:36,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:48:36,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 22:48:36,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:48:36,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:48:36,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:48:36,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:48:36,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:48:36,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:48:36,568 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:48:36,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:48:36,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:48:36,569 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:48:36,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:48:36,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:48:36,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:48:36,571 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:48:36,571 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:48:36,572 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 22:48:36,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:48:36,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:48:36,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 22:48:36,572 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 22:48:36,573 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:48:36,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:48:36,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:48:36,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:48:36,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:48:36,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:48:36,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:48:36,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:48:36,574 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 22:48:36,575 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 22:48:36,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:48:36,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 22:48:36,576 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_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-10-28 22:48:37,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:48:37,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:48:37,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:48:37,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:48:37,059 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:48:37,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 22:48:37,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/be0094ba7/c981b9fc24d74b54bf39a0f689e18ebd/FLAGdcd006126 [2021-10-28 22:48:37,888 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:48:37,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 22:48:37,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/be0094ba7/c981b9fc24d74b54bf39a0f689e18ebd/FLAGdcd006126 [2021-10-28 22:48:38,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/data/be0094ba7/c981b9fc24d74b54bf39a0f689e18ebd [2021-10-28 22:48:38,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:48:38,149 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:48:38,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:48:38,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:48:38,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:48:38,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6caee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38, skipping insertion in model container [2021-10-28 22:48:38,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:48:38,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:48:38,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:48:38,690 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 22:48:38,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:48:38,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:48:38,790 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:48:38,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:48:38,861 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:48:38,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38 WrapperNode [2021-10-28 22:48:38,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:48:38,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:48:38,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:48:38,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:48:38,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:48:38,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:48:38,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:48:38,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:48:38,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (1/1) ... [2021-10-28 22:48:38,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:48:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:39,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:48:39,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:48:39,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:48:39,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:48:39,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:48:39,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 22:48:39,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 22:48:39,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 22:48:39,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 22:48:39,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 22:48:39,052 INFO L138 BoogieDeclarations]: Found implementation of procedure expandArray [2021-10-28 22:48:39,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:48:39,053 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2021-10-28 22:48:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 22:48:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 22:48:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 22:48:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 22:48:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 22:48:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 22:48:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 22:48:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 22:48:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 22:48:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 22:48:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 22:48:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 22:48:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 22:48:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 22:48:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 22:48:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 22:48:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 22:48:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 22:48:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 22:48:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 22:48:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 22:48:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 22:48:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 22:48:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 22:48:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 22:48:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 22:48:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 22:48:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 22:48:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 22:48:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 22:48:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 22:48:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 22:48:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 22:48:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 22:48:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 22:48:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 22:48:39,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 22:48:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 22:48:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 22:48:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 22:48:39,073 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 22:48:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 22:48:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 22:48:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 22:48:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 22:48:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 22:48:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 22:48:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 22:48:39,075 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 22:48:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 22:48:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 22:48:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 22:48:39,076 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 22:48:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 22:48:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 22:48:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 22:48:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 22:48:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 22:48:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 22:48:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 22:48:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 22:48:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 22:48:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 22:48:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:48:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 22:48:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 22:48:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 22:48:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 22:48:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 22:48:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 22:48:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 22:48:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 22:48:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 22:48:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 22:48:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 22:48:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 22:48:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 22:48:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 22:48:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 22:48:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 22:48:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 22:48:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 22:48:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 22:48:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 22:48:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 22:48:39,083 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 22:48:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 22:48:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 22:48:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 22:48:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 22:48:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 22:48:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 22:48:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 22:48:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 22:48:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 22:48:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 22:48:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 22:48:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 22:48:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 22:48:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 22:48:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 22:48:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 22:48:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 22:48:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 22:48:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 22:48:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 22:48:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 22:48:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 22:48:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure expandArray [2021-10-28 22:48:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2021-10-28 22:48:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 22:48:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:48:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:48:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:48:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:48:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:48:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:48:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 22:48:39,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:48:39,820 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 22:48:39,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:39 BoogieIcfgContainer [2021-10-28 22:48:39,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:48:39,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:48:39,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:48:39,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:48:39,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:48:38" (1/3) ... [2021-10-28 22:48:39,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d1bce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:39, skipping insertion in model container [2021-10-28 22:48:39,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:38" (2/3) ... [2021-10-28 22:48:39,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d1bce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:39, skipping insertion in model container [2021-10-28 22:48:39,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:39" (3/3) ... [2021-10-28 22:48:39,833 INFO L111 eAbstractionObserver]: Analyzing ICFG array-realloc-1.i [2021-10-28 22:48:39,840 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:48:39,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-28 22:48:39,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:48:39,915 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:48:39,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-28 22:48:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 22:48:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 22:48:39,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:39,959 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:39,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1774917903, now seen corresponding path program 1 times [2021-10-28 22:48:39,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:39,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202509018] [2021-10-28 22:48:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:39,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:39,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:40,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 22:48:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:40,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:48:40,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:40,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:40,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:40,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202509018] [2021-10-28 22:48:40,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202509018] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:40,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:40,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 22:48:40,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700597662] [2021-10-28 22:48:40,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:48:40,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:48:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:40,375 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:48:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:40,488 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-10-28 22:48:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:48:40,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 22:48:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:40,501 INFO L225 Difference]: With dead ends: 55 [2021-10-28 22:48:40,502 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 22:48:40,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 22:48:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-10-28 22:48:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:48:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-28 22:48:40,557 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 8 [2021-10-28 22:48:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:40,558 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-28 22:48:40,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:48:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-28 22:48:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:48:40,559 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:40,559 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:40,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:40,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:40,787 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:40,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash -812119182, now seen corresponding path program 1 times [2021-10-28 22:48:40,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:40,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292796240] [2021-10-28 22:48:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:40,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:40,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:40,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:40,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 22:48:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:48:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:41,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:41,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:41,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292796240] [2021-10-28 22:48:41,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292796240] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:41,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:41,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 22:48:41,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996222640] [2021-10-28 22:48:41,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:48:41,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:48:41,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:41,101 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:48:41,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:41,116 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-28 22:48:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:48:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 22:48:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:41,118 INFO L225 Difference]: With dead ends: 39 [2021-10-28 22:48:41,118 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 22:48:41,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 22:48:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-28 22:48:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 31 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:48:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-28 22:48:41,126 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 9 [2021-10-28 22:48:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:41,126 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-28 22:48:41,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:48:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-28 22:48:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:48:41,128 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:41,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:41,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 22:48:41,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:41,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:41,341 INFO L85 PathProgramCache]: Analyzing trace with hash -386852574, now seen corresponding path program 1 times [2021-10-28 22:48:41,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:41,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257516704] [2021-10-28 22:48:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:41,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:41,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:41,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 22:48:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:41,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 22:48:41,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:41,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:41,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:41,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257516704] [2021-10-28 22:48:41,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257516704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:41,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:41,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 22:48:41,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480630030] [2021-10-28 22:48:41,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:48:41,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:41,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:48:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:41,625 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-28 22:48:41,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:41,675 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-10-28 22:48:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:48:41,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2021-10-28 22:48:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:41,677 INFO L225 Difference]: With dead ends: 46 [2021-10-28 22:48:41,678 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 22:48:41,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 22:48:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-28 22:48:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.48) internal successors, (37), 33 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:48:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-28 22:48:41,686 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2021-10-28 22:48:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:41,687 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-28 22:48:41,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-28 22:48:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-28 22:48:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 22:48:41,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:41,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:41,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:41,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:41,912 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -171591004, now seen corresponding path program 1 times [2021-10-28 22:48:41,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:41,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172973161] [2021-10-28 22:48:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:41,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:41,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:41,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:41,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 22:48:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:42,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:48:42,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:42,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:42,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:42,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172973161] [2021-10-28 22:48:42,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172973161] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:42,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:42,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 22:48:42,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247524782] [2021-10-28 22:48:42,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:48:42,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:48:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:48:42,358 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:48:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:42,441 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-10-28 22:48:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:48:42,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-28 22:48:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:42,444 INFO L225 Difference]: With dead ends: 52 [2021-10-28 22:48:42,444 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 22:48:42,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:48:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 22:48:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-28 22:48:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 22:48:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-28 22:48:42,454 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2021-10-28 22:48:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:42,455 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-28 22:48:42,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:48:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-28 22:48:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 22:48:42,457 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:42,457 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:42,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:42,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:42,679 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:42,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash -170667483, now seen corresponding path program 1 times [2021-10-28 22:48:42,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:42,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870600538] [2021-10-28 22:48:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:42,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:42,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:42,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 22:48:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:42,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:48:42,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:42,946 INFO L354 Elim1Store]: treesize reduction 10, result has 50.0 percent of original size [2021-10-28 22:48:42,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 16 [2021-10-28 22:48:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:43,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:43,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:43,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870600538] [2021-10-28 22:48:43,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870600538] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:43,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:43,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 22:48:43,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302829768] [2021-10-28 22:48:43,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:48:43,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:43,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:48:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:48:43,090 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 22:48:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:43,204 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-10-28 22:48:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:48:43,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 22:48:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:43,208 INFO L225 Difference]: With dead ends: 45 [2021-10-28 22:48:43,208 INFO L226 Difference]: Without dead ends: 45 [2021-10-28 22:48:43,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:48:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-28 22:48:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-28 22:48:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 22:48:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-28 22:48:43,215 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 17 [2021-10-28 22:48:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:43,215 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-28 22:48:43,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 22:48:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-28 22:48:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 22:48:43,216 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:43,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:43,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:43,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:43,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting expandArrayErr1REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash -170667482, now seen corresponding path program 1 times [2021-10-28 22:48:43,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:43,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513612756] [2021-10-28 22:48:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:43,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:43,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:43,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 22:48:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:43,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 22:48:43,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:43,651 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 [2021-10-28 22:48:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:43,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:44,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:44,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513612756] [2021-10-28 22:48:44,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513612756] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:44,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:44,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-28 22:48:44,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729732445] [2021-10-28 22:48:44,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:48:44,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:48:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:48:44,541 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:48:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:46,149 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2021-10-28 22:48:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 22:48:46,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-10-28 22:48:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:46,152 INFO L225 Difference]: With dead ends: 121 [2021-10-28 22:48:46,152 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 22:48:46,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:48:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 22:48:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 63. [2021-10-28 22:48:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 49 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-28 22:48:46,161 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 17 [2021-10-28 22:48:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:46,161 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-28 22:48:46,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:48:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-28 22:48:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 22:48:46,163 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:46,163 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:46,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:46,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:46,368 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:46,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:46,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2028589773, now seen corresponding path program 1 times [2021-10-28 22:48:46,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:46,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080945658] [2021-10-28 22:48:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:46,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:46,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:46,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:46,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 22:48:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:46,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:48:46,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:46,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:46,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:46,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080945658] [2021-10-28 22:48:46,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080945658] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:46,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:46,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 22:48:46,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218263265] [2021-10-28 22:48:46,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:48:46,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:48:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:46,607 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:48:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:46,616 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-10-28 22:48:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:48:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-28 22:48:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:46,618 INFO L225 Difference]: With dead ends: 62 [2021-10-28 22:48:46,618 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 22:48:46,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:48:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 22:48:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 22:48:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-10-28 22:48:46,643 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 17 [2021-10-28 22:48:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:46,644 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-10-28 22:48:46,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 22:48:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-10-28 22:48:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:48:46,645 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:46,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:46,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 22:48:46,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:46,856 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:46,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1538226398, now seen corresponding path program 1 times [2021-10-28 22:48:46,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:46,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568358631] [2021-10-28 22:48:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:46,861 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:46,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:46,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:46,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 22:48:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:47,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:48:47,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:47,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:47,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:47,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568358631] [2021-10-28 22:48:47,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568358631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:47,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:47,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2021-10-28 22:48:47,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409694309] [2021-10-28 22:48:47,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:48:47,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:47,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:48:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:48:47,144 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:48:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:47,186 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-10-28 22:48:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:48:47,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2021-10-28 22:48:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:47,187 INFO L225 Difference]: With dead ends: 61 [2021-10-28 22:48:47,188 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 22:48:47,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:48:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 22:48:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 22:48:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.302325581395349) internal successors, (56), 47 states have internal predecessors, (56), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-10-28 22:48:47,193 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 18 [2021-10-28 22:48:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:47,193 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-10-28 22:48:47,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:48:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-10-28 22:48:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:48:47,194 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:47,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:47,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:47,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:47,401 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:47,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash -440378001, now seen corresponding path program 1 times [2021-10-28 22:48:47,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:47,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244917399] [2021-10-28 22:48:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:47,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:47,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:47,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 22:48:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:47,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:48:47,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:47,600 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 [2021-10-28 22:48:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:47,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:47,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:47,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244917399] [2021-10-28 22:48:47,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244917399] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:47,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:47,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 22:48:47,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515088256] [2021-10-28 22:48:47,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:48:47,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:48:47,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:48:47,857 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:48:47,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:47,960 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-10-28 22:48:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:48:47,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-10-28 22:48:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:47,962 INFO L225 Difference]: With dead ends: 74 [2021-10-28 22:48:47,962 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 22:48:47,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:48:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 22:48:47,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-28 22:48:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 53 states have internal predecessors, (62), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-28 22:48:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-10-28 22:48:47,968 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 19 [2021-10-28 22:48:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:47,969 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-10-28 22:48:47,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:48:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-10-28 22:48:47,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 22:48:47,970 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:47,970 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:47,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:48,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:48,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash -766816059, now seen corresponding path program 1 times [2021-10-28 22:48:48,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:48,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185355334] [2021-10-28 22:48:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:48,182 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:48,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:48,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:48,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 22:48:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:48,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:48:48,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:48,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:48,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:48,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185355334] [2021-10-28 22:48:48,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185355334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:48,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:48,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 22:48:48,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680188446] [2021-10-28 22:48:48,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:48:48,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:48:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:48:48,703 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:48:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:48,836 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-10-28 22:48:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:48:48,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-10-28 22:48:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:48,838 INFO L225 Difference]: With dead ends: 60 [2021-10-28 22:48:48,838 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 22:48:48,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:48:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 22:48:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-28 22:48:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-28 22:48:48,844 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 20 [2021-10-28 22:48:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:48,844 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-28 22:48:48,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:48:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-28 22:48:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 22:48:48,845 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:48,845 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:48,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:49,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:49,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:49,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1360467952, now seen corresponding path program 1 times [2021-10-28 22:48:49,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:49,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860120169] [2021-10-28 22:48:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:49,055 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:49,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:49,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:49,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 22:48:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:49,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:48:49,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:49,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:49,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:49,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860120169] [2021-10-28 22:48:49,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860120169] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:49,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:49,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-28 22:48:49,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96805108] [2021-10-28 22:48:49,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:48:49,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:48:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:48:49,790 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 22:48:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:49,990 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-28 22:48:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:48:49,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-10-28 22:48:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:49,992 INFO L225 Difference]: With dead ends: 59 [2021-10-28 22:48:49,992 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 22:48:49,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:48:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 22:48:49,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-28 22:48:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-28 22:48:49,997 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 22 [2021-10-28 22:48:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:49,997 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-28 22:48:49,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 22:48:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-28 22:48:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 22:48:49,999 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:49,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:50,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:50,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:50,204 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1753462742, now seen corresponding path program 1 times [2021-10-28 22:48:50,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:50,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188782101] [2021-10-28 22:48:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:50,205 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:50,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:50,207 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:50,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 22:48:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:50,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:48:50,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:50,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:50,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:50,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188782101] [2021-10-28 22:48:50,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188782101] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:50,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:50,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 22:48:50,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361343361] [2021-10-28 22:48:50,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:48:50,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:50,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:48:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:48:50,601 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:48:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:50,666 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-28 22:48:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:48:50,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-10-28 22:48:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:50,668 INFO L225 Difference]: With dead ends: 59 [2021-10-28 22:48:50,668 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 22:48:50,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:48:50,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 22:48:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-28 22:48:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-10-28 22:48:50,672 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 27 [2021-10-28 22:48:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:50,672 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-10-28 22:48:50,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:48:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-10-28 22:48:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 22:48:50,673 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:50,673 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:50,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:50,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:50,874 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 64890135, now seen corresponding path program 1 times [2021-10-28 22:48:50,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:50,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814794171] [2021-10-28 22:48:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:50,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:50,876 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:50,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 22:48:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:51,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:48:51,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:51,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:51,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:51,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814794171] [2021-10-28 22:48:51,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814794171] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:48:51,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:51,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 22:48:51,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581020911] [2021-10-28 22:48:51,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:48:51,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:48:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:48:51,359 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:48:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:51,460 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-10-28 22:48:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:48:51,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-10-28 22:48:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:51,462 INFO L225 Difference]: With dead ends: 65 [2021-10-28 22:48:51,462 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 22:48:51,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:48:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 22:48:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-28 22:48:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-28 22:48:51,466 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 29 [2021-10-28 22:48:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:51,466 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-28 22:48:51,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 22:48:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-28 22:48:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 22:48:51,467 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:51,468 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:51,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:51,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:51,676 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1742564328, now seen corresponding path program 1 times [2021-10-28 22:48:51,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:51,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455143494] [2021-10-28 22:48:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:51,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:51,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:51,679 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:51,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 22:48:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:51,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:48:51,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 22:48:52,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 22:48:52,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:52,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455143494] [2021-10-28 22:48:52,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455143494] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:52,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:52,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 22:48:52,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733906117] [2021-10-28 22:48:52,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:48:52,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:48:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:48:52,147 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:48:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:52,182 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-28 22:48:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:48:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-28 22:48:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:52,184 INFO L225 Difference]: With dead ends: 58 [2021-10-28 22:48:52,184 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 22:48:52,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:48:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 22:48:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-28 22:48:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 22:48:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-28 22:48:52,187 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 29 [2021-10-28 22:48:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:52,187 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-28 22:48:52,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 22:48:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-28 22:48:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 22:48:52,188 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:52,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:52,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:52,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:52,389 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 22:48:52,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 188620705, now seen corresponding path program 1 times [2021-10-28 22:48:52,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:52,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099901329] [2021-10-28 22:48:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:52,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:52,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:52,391 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:52,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 22:48:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:48:52,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:48:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:48:52,783 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 22:48:52,784 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:48:52,784 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:48:52,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:48:52,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:48:52,787 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 22:48:52,787 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr0REQUIRES_VIOLATION [2021-10-28 22:48:52,787 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr1REQUIRES_VIOLATION [2021-10-28 22:48:52,787 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:48:52,787 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:48:52,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:48:52,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:52,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:52,990 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:52,993 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:48:53,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:48:53 BoogieIcfgContainer [2021-10-28 22:48:53,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:48:53,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:48:53,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:48:53,031 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:48:53,032 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:39" (3/4) ... [2021-10-28 22:48:53,034 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:48:53,077 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:48:53,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:48:53,078 INFO L168 Benchmark]: Toolchain (without parser) took 14928.99 ms. Allocated memory was 58.7 MB in the beginning and 98.6 MB in the end (delta: 39.8 MB). Free memory was 35.6 MB in the beginning and 37.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:53,079 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:48:53,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.33 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 32.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:53,079 INFO L168 Benchmark]: Boogie Preprocessor took 79.16 ms. Allocated memory is still 58.7 MB. Free memory was 32.7 MB in the beginning and 30.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:53,080 INFO L168 Benchmark]: RCFGBuilder took 879.89 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 30.1 MB in the beginning and 47.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:53,080 INFO L168 Benchmark]: TraceAbstraction took 13205.16 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.6 MB in the beginning and 40.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:53,081 INFO L168 Benchmark]: Witness Printer took 46.29 ms. Allocated memory is still 98.6 MB. Free memory was 40.5 MB in the beginning and 37.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:53,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 710.33 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 32.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.16 ms. Allocated memory is still 58.7 MB. Free memory was 32.7 MB in the beginning and 30.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 879.89 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 30.1 MB in the beginning and 47.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13205.16 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.6 MB in the beginning and 40.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. * Witness Printer took 46.29 ms. Allocated memory is still 98.6 MB. Free memory was 40.5 MB in the beginning and 37.3 MB in the end (delta: 3.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 538]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L512] int num; [L513] int ind, newsize, i = 1; VAL [\old(i)=5, \old(ind)=6, \old(newsize)=7, \old(num)=9, i=1, ind=0, newsize=0, num=0] [L528] num = __VERIFIER_nondet_int() [L529] COND FALSE !(!(num > 0 && num < 100)) [L532] int *a = (int *)malloc(sizeof(int)); [L533] COND FALSE !(a == ((void *)0)) [L536] newsize = 0 VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=0, num=1] [L537] CALL expandArray(a) VAL [\old(newsize)=0, \old(num)=0, arg={1:0}, i=1, ind=0, newsize=0, num=1] [L515] int *a = (int *)arg; [L516] int *b = ((void *)0); VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=0, num=1] [L517] COND TRUE newsize < num [L518] newsize = newsize + 1 VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1] [L519] EXPR, FCALL realloc(a, sizeof(int) * newsize) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1, realloc(a, sizeof(int) * newsize)={1:0}] [L519] b = realloc(a, sizeof(int) * newsize) [L520] b[newsize - 1] = i VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L521] a = b VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L517] COND FALSE !(newsize < num) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L523] COND TRUE b != ((void *)0) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) [L525] return 0; VAL [\old(newsize)=0, \old(num)=0, \result={0:0}, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L537] RET expandArray(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, expandArray(a)={0:0}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 63 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 468 SDtfs, 411 SDslu, 944 SDs, 0 SdLazy, 608 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=9, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 496 ConstructedInterpolants, 21 QuantifiedInterpolants, 1569 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1321 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 28 InterpolantComputations, 26 PerfectInterpolantSequences, 40/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 22:48:53,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11a39af2-ce22-49f1-8c08-22e2877c918b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...