./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/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_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be --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_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/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_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be --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-e943c26 [2021-10-21 20:14:19,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:14:19,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:14:19,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:14:19,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:14:19,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:14:19,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:14:19,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:14:19,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:14:19,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:14:19,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:14:19,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:14:19,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:14:19,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:14:19,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:14:19,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:14:19,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:14:19,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:14:19,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:14:19,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:14:19,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:14:19,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:14:19,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:14:19,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:14:19,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:14:19,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:14:19,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:14:19,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:14:19,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:14:19,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:14:19,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:14:19,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:14:19,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:14:19,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:14:19,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:14:19,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:14:19,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:14:19,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:14:19,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:14:19,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:14:19,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:14:19,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:14:19,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:14:19,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:14:19,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:14:19,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:14:19,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:14:19,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:14:19,349 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:14:19,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:14:19,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:14:19,350 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:14:19,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:14:19,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:14:19,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:14:19,351 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:14:19,351 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:14:19,352 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:14:19,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:14:19,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:14:19,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:14:19,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:14:19,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:14:19,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:14:19,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:14:19,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:19,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:14:19,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:14:19,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:14:19,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:14:19,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:14:19,356 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_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-10-21 20:14:19,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:14:19,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:14:19,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:14:19,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:14:19,626 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:14:19,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-21 20:14:19,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/732461998/835ae3b530c14390aa44dd91e6d75c06/FLAG094481169 [2021-10-21 20:14:20,248 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:14:20,252 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-21 20:14:20,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/732461998/835ae3b530c14390aa44dd91e6d75c06/FLAG094481169 [2021-10-21 20:14:20,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/732461998/835ae3b530c14390aa44dd91e6d75c06 [2021-10-21 20:14:20,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:14:20,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:14:20,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:20,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:14:20,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:14:20,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:20" (1/1) ... [2021-10-21 20:14:20,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fb56e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:20, skipping insertion in model container [2021-10-21 20:14:20,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:20" (1/1) ... [2021-10-21 20:14:20,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:14:20,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:14:20,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:20,993 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) [2021-10-21 20:14:20,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ae422ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:20, skipping insertion in model container [2021-10-21 20:14:20,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:20,994 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 20:14:20,996 INFO L168 Benchmark]: Toolchain (without parser) took 435.10 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 50.7 MB in the beginning and 96.2 MB in the end (delta: -45.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:20,997 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:14:20,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.24 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 50.5 MB in the beginning and 96.2 MB in the end (delta: -45.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:21,000 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 83.9 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 429.24 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 50.5 MB in the beginning and 96.2 MB in the end (delta: -45.7 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-e943c26 [2021-10-21 20:14:23,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:14:23,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:14:23,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:14:23,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:14:23,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:14:23,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:14:23,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:14:23,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:14:23,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:14:23,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:14:23,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:14:23,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:14:23,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:14:23,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:14:23,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:14:23,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:14:23,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:14:23,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:14:23,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:14:23,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:14:23,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:14:23,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:14:23,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:14:23,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:14:23,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:14:23,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:14:23,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:14:23,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:14:23,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:14:23,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:14:23,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:14:23,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:14:23,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:14:23,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:14:23,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:14:23,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:14:23,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:14:23,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:14:23,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:14:23,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:14:23,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 20:14:23,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:14:23,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:14:23,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:14:23,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:14:23,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:14:23,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:14:23,487 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:14:23,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:14:23,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:14:23,487 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:14:23,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:14:23,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:14:23,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:14:23,489 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:14:23,490 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:14:23,490 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:14:23,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:14:23,491 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:14:23,491 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:14:23,491 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:14:23,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:14:23,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:14:23,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:14:23,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:14:23,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:14:23,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:23,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:14:23,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:14:23,494 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:14:23,494 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:14:23,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:14:23,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:14:23,495 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_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-10-21 20:14:23,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:14:23,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:14:23,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:14:23,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:14:23,976 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:14:23,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-21 20:14:24,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/328075fef/807e7349c3804c4b93523b9ab6910ef2/FLAGe92b6ea84 [2021-10-21 20:14:24,724 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:14:24,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-21 20:14:24,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/328075fef/807e7349c3804c4b93523b9ab6910ef2/FLAGe92b6ea84 [2021-10-21 20:14:24,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/data/328075fef/807e7349c3804c4b93523b9ab6910ef2 [2021-10-21 20:14:24,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:14:24,977 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:14:24,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:24,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:14:24,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:14:24,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:24" (1/1) ... [2021-10-21 20:14:24,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7467bfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:24, skipping insertion in model container [2021-10-21 20:14:24,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:24" (1/1) ... [2021-10-21 20:14:24,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:14:25,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:14:25,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:25,440 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 20:14:25,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:14:25,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:25,497 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:14:25,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:25,588 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:14:25,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25 WrapperNode [2021-10-21 20:14:25,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:25,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:14:25,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:14:25,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:14:25,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:14:25,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:14:25,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:14:25,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:14:25,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (1/1) ... [2021-10-21 20:14:25,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:14:25,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:14:25,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:14:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:14:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:14:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:14:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:14:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:14:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:14:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:14:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:14:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure expandArray [2021-10-21 20:14:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:14:25,817 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2021-10-21 20:14:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:14:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:14:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:14:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:14:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:14:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:14:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:14:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:14:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:14:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:14:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:14:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:14:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:14:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:14:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:14:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:14:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:14:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:14:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:14:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:14:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:14:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:14:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:14:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:14:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:14:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:14:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:14:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:14:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:14:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:14:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:14:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:14:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:14:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:14:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:14:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:14:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:14:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:14:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:14:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:14:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:14:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:14:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:14:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:14:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:14:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:14:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:14:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:14:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:14:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:14:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:14:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:14:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:14:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:14:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:14:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:14:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:14:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:14:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:14:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:14:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:14:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:14:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:14:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:14:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:14:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:14:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:14:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:14:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:14:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:14:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:14:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:14:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:14:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:14:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:14:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:14:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:14:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:14:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:14:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:14:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:14:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:14:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:14:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:14:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:14:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:14:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:14:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:14:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:14:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:14:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:14:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:14:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:14:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:14:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:14:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:14:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:14:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:14:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:14:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:14:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:14:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:14:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:14:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:14:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:14:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:14:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:14:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:14:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure expandArray [2021-10-21 20:14:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2021-10-21 20:14:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:14:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:14:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:14:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:14:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:14:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:14:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:14:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:14:26,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:14:26,504 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 20:14:26,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:26 BoogieIcfgContainer [2021-10-21 20:14:26,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:14:26,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:14:26,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:14:26,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:14:26,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:14:24" (1/3) ... [2021-10-21 20:14:26,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ce245c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:14:26, skipping insertion in model container [2021-10-21 20:14:26,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:25" (2/3) ... [2021-10-21 20:14:26,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ce245c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:14:26, skipping insertion in model container [2021-10-21 20:14:26,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:26" (3/3) ... [2021-10-21 20:14:26,521 INFO L111 eAbstractionObserver]: Analyzing ICFG array-realloc-1.i [2021-10-21 20:14:26,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:14:26,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-21 20:14:26,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:14:26,615 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 [2021-10-21 20:14:26,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-21 20:14:26,633 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) [2021-10-21 20:14:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:14:26,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:26,661 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:26,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1774917903, now seen corresponding path program 1 times [2021-10-21 20:14:26,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:26,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846448507] [2021-10-21 20:14:26,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:26,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:26,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:26,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:26,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:14:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:26,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:14:26,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:26,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:27,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:27,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846448507] [2021-10-21 20:14:27,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846448507] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:27,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:27,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:14:27,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904093018] [2021-10-21 20:14:27,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:27,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:27,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:27,062 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) [2021-10-21 20:14:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:27,170 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-10-21 20:14:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:27,172 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 [2021-10-21 20:14:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:27,181 INFO L225 Difference]: With dead ends: 55 [2021-10-21 20:14:27,181 INFO L226 Difference]: Without dead ends: 51 [2021-10-21 20:14:27,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-21 20:14:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-10-21 20:14:27,225 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) [2021-10-21 20:14:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-21 20:14:27,228 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 8 [2021-10-21 20:14:27,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:27,228 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-21 20:14:27,229 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) [2021-10-21 20:14:27,229 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-21 20:14:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:14:27,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:27,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:27,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:27,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:27,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash -812119182, now seen corresponding path program 1 times [2021-10-21 20:14:27,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:27,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370124412] [2021-10-21 20:14:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:27,432 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:27,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:27,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:27,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:14:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:27,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:14:27,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:27,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:27,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:27,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370124412] [2021-10-21 20:14:27,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370124412] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:27,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:27,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 20:14:27,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787151363] [2021-10-21 20:14:27,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:27,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:27,635 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) [2021-10-21 20:14:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:27,647 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-21 20:14:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:27,647 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 [2021-10-21 20:14:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:27,649 INFO L225 Difference]: With dead ends: 39 [2021-10-21 20:14:27,649 INFO L226 Difference]: Without dead ends: 39 [2021-10-21 20:14:27,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:27,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-21 20:14:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-21 20:14:27,654 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) [2021-10-21 20:14:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-21 20:14:27,656 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 9 [2021-10-21 20:14:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:27,656 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-21 20:14:27,656 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) [2021-10-21 20:14:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-21 20:14:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:14:27,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:27,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:27,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:27,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:27,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:27,870 INFO L82 PathProgramCache]: Analyzing trace with hash -386852574, now seen corresponding path program 1 times [2021-10-21 20:14:27,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:27,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957868092] [2021-10-21 20:14:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:27,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:27,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:27,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:14:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:28,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:14:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:28,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:28,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:28,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957868092] [2021-10-21 20:14:28,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957868092] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:28,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:28,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 20:14:28,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536445514] [2021-10-21 20:14:28,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:28,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:28,225 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) [2021-10-21 20:14:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:28,283 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-10-21 20:14:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:28,284 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 [2021-10-21 20:14:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:28,286 INFO L225 Difference]: With dead ends: 46 [2021-10-21 20:14:28,286 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 20:14:28,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 20:14:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-21 20:14:28,300 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) [2021-10-21 20:14:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-21 20:14:28,308 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2021-10-21 20:14:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:28,309 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-21 20:14:28,309 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) [2021-10-21 20:14:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-21 20:14:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:14:28,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:28,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:28,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:28,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:28,528 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:28,528 INFO L82 PathProgramCache]: Analyzing trace with hash -171591004, now seen corresponding path program 1 times [2021-10-21 20:14:28,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:28,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666808561] [2021-10-21 20:14:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:28,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:28,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:28,537 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:28,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:14:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:28,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:14:28,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:28,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:28,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:28,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666808561] [2021-10-21 20:14:28,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666808561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:28,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:28,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-21 20:14:28,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81250531] [2021-10-21 20:14:28,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:14:28,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:28,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:14:28,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:28,923 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) [2021-10-21 20:14:29,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:29,000 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-10-21 20:14:29,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:14:29,001 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 [2021-10-21 20:14:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:29,004 INFO L225 Difference]: With dead ends: 52 [2021-10-21 20:14:29,004 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 20:14:29,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:14:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 20:14:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-21 20:14:29,014 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) [2021-10-21 20:14:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-21 20:14:29,016 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2021-10-21 20:14:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:29,017 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-21 20:14:29,017 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) [2021-10-21 20:14:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-21 20:14:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:14:29,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:29,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:29,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:29,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:29,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash -170667483, now seen corresponding path program 1 times [2021-10-21 20:14:29,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:29,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994593019] [2021-10-21 20:14:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:29,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:29,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:29,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:14:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:29,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:14:29,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:29,458 INFO L354 Elim1Store]: treesize reduction 10, result has 50.0 percent of original size [2021-10-21 20:14:29,459 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 [2021-10-21 20:14:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:29,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:29,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:29,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994593019] [2021-10-21 20:14:29,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994593019] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:29,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:29,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:14:29,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172999049] [2021-10-21 20:14:29,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:14:29,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:14:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:29,596 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) [2021-10-21 20:14:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:29,700 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-10-21 20:14:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:14:29,702 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 [2021-10-21 20:14:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:29,702 INFO L225 Difference]: With dead ends: 45 [2021-10-21 20:14:29,702 INFO L226 Difference]: Without dead ends: 45 [2021-10-21 20:14:29,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-21 20:14:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-21 20:14:29,706 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) [2021-10-21 20:14:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-21 20:14:29,709 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 17 [2021-10-21 20:14:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:29,709 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-21 20:14:29,710 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) [2021-10-21 20:14:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-21 20:14:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:14:29,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:29,711 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:29,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:29,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:29,912 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting expandArrayErr1REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:29,912 INFO L82 PathProgramCache]: Analyzing trace with hash -170667482, now seen corresponding path program 1 times [2021-10-21 20:14:29,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:29,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532455346] [2021-10-21 20:14:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:29,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:29,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:29,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:29,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:14:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:30,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:14:30,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:30,147 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 [2021-10-21 20:14:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:30,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:31,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:31,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532455346] [2021-10-21 20:14:31,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532455346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:31,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:31,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-21 20:14:31,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473826552] [2021-10-21 20:14:31,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:14:31,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:31,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:14:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:14:31,041 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) [2021-10-21 20:14:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:32,734 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2021-10-21 20:14:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:14:32,735 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 [2021-10-21 20:14:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:32,737 INFO L225 Difference]: With dead ends: 121 [2021-10-21 20:14:32,737 INFO L226 Difference]: Without dead ends: 119 [2021-10-21 20:14:32,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1310.7ms TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:14:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-21 20:14:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 63. [2021-10-21 20:14:32,744 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) [2021-10-21 20:14:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-21 20:14:32,745 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 17 [2021-10-21 20:14:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:32,746 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-21 20:14:32,746 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) [2021-10-21 20:14:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-21 20:14:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:14:32,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:32,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:32,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:32,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:32,948 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:32,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:32,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2028589773, now seen corresponding path program 1 times [2021-10-21 20:14:32,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:32,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900095941] [2021-10-21 20:14:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:32,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:32,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:32,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:14:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:33,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:14:33,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:33,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:33,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:33,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900095941] [2021-10-21 20:14:33,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900095941] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:33,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:33,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:14:33,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330894819] [2021-10-21 20:14:33,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:33,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:33,210 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) [2021-10-21 20:14:33,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:33,222 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-10-21 20:14:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:33,223 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 [2021-10-21 20:14:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:33,225 INFO L225 Difference]: With dead ends: 62 [2021-10-21 20:14:33,225 INFO L226 Difference]: Without dead ends: 62 [2021-10-21 20:14:33,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-21 20:14:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-21 20:14:33,242 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) [2021-10-21 20:14:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-10-21 20:14:33,248 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 17 [2021-10-21 20:14:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:33,248 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-10-21 20:14:33,249 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) [2021-10-21 20:14:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-10-21 20:14:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:14:33,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:33,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:33,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:33,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:33,469 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:33,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1538226398, now seen corresponding path program 1 times [2021-10-21 20:14:33,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:33,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203148945] [2021-10-21 20:14:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:33,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:33,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:33,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:14:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:33,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:14:33,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:33,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:33,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:33,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203148945] [2021-10-21 20:14:33,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203148945] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:33,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:33,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2021-10-21 20:14:33,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025091676] [2021-10-21 20:14:33,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:14:33,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:14:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:14:33,765 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) [2021-10-21 20:14:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:33,810 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-10-21 20:14:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:14:33,811 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 [2021-10-21 20:14:33,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:33,812 INFO L225 Difference]: With dead ends: 61 [2021-10-21 20:14:33,812 INFO L226 Difference]: Without dead ends: 61 [2021-10-21 20:14:33,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:14:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-21 20:14:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-21 20:14:33,817 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) [2021-10-21 20:14:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-10-21 20:14:33,818 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 18 [2021-10-21 20:14:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:33,818 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-10-21 20:14:33,818 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) [2021-10-21 20:14:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-10-21 20:14:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:14:33,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:33,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:33,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:34,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:34,029 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:34,030 INFO L82 PathProgramCache]: Analyzing trace with hash -440378001, now seen corresponding path program 1 times [2021-10-21 20:14:34,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:34,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779635276] [2021-10-21 20:14:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:34,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:34,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:34,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 20:14:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:34,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:14:34,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:34,218 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 [2021-10-21 20:14:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:34,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:34,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:34,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779635276] [2021-10-21 20:14:34,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779635276] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:34,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:34,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 20:14:34,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855802234] [2021-10-21 20:14:34,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:14:34,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:34,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:14:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:34,465 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) [2021-10-21 20:14:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:34,570 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-10-21 20:14:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:14:34,571 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 [2021-10-21 20:14:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:34,572 INFO L225 Difference]: With dead ends: 74 [2021-10-21 20:14:34,572 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 20:14:34,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 20:14:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-21 20:14:34,577 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) [2021-10-21 20:14:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-10-21 20:14:34,577 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 19 [2021-10-21 20:14:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:34,578 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-10-21 20:14:34,578 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) [2021-10-21 20:14:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-10-21 20:14:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:14:34,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:34,579 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:34,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:34,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:34,793 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash -766816059, now seen corresponding path program 1 times [2021-10-21 20:14:34,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:34,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190875421] [2021-10-21 20:14:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:34,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:34,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:34,795 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:34,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 20:14:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:14:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:35,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:35,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:35,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190875421] [2021-10-21 20:14:35,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190875421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:35,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:35,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-21 20:14:35,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204618841] [2021-10-21 20:14:35,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:14:35,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:14:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:14:35,324 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) [2021-10-21 20:14:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:35,459 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-10-21 20:14:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:14:35,460 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 [2021-10-21 20:14:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:35,461 INFO L225 Difference]: With dead ends: 60 [2021-10-21 20:14:35,461 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 20:14:35,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:14:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 20:14:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-21 20:14:35,465 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) [2021-10-21 20:14:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-21 20:14:35,466 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 20 [2021-10-21 20:14:35,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:35,466 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-21 20:14:35,466 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) [2021-10-21 20:14:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-21 20:14:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:14:35,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:35,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:35,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:35,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:35,668 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1360467952, now seen corresponding path program 1 times [2021-10-21 20:14:35,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:35,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638422097] [2021-10-21 20:14:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:35,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:35,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:35,670 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:35,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 20:14:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:35,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:14:35,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:36,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:36,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:36,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638422097] [2021-10-21 20:14:36,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638422097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:36,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:36,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-21 20:14:36,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479054504] [2021-10-21 20:14:36,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:14:36,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:14:36,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:14:36,441 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) [2021-10-21 20:14:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:36,653 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-21 20:14:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:14:36,655 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 [2021-10-21 20:14:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:36,656 INFO L225 Difference]: With dead ends: 59 [2021-10-21 20:14:36,656 INFO L226 Difference]: Without dead ends: 59 [2021-10-21 20:14:36,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:14:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-21 20:14:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-21 20:14:36,659 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) [2021-10-21 20:14:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-21 20:14:36,660 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 22 [2021-10-21 20:14:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:36,661 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-21 20:14:36,661 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) [2021-10-21 20:14:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-21 20:14:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 20:14:36,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:36,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:36,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:36,872 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:36,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1753462742, now seen corresponding path program 1 times [2021-10-21 20:14:36,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:36,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979794977] [2021-10-21 20:14:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:36,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:36,874 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:36,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 20:14:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:37,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:14:37,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:37,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:37,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:37,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979794977] [2021-10-21 20:14:37,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979794977] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:37,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:37,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:14:37,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276226002] [2021-10-21 20:14:37,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:14:37,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:37,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:14:37,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:37,258 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) [2021-10-21 20:14:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:37,321 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-21 20:14:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:14:37,322 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 [2021-10-21 20:14:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:37,323 INFO L225 Difference]: With dead ends: 59 [2021-10-21 20:14:37,323 INFO L226 Difference]: Without dead ends: 59 [2021-10-21 20:14:37,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-21 20:14:37,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-21 20:14:37,330 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) [2021-10-21 20:14:37,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-10-21 20:14:37,334 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 27 [2021-10-21 20:14:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:37,335 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-10-21 20:14:37,335 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) [2021-10-21 20:14:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-10-21 20:14:37,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:14:37,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:37,339 INFO L512 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] [2021-10-21 20:14:37,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:37,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:37,540 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:37,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:37,540 INFO L82 PathProgramCache]: Analyzing trace with hash 64890135, now seen corresponding path program 1 times [2021-10-21 20:14:37,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:37,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234810836] [2021-10-21 20:14:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:37,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:37,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:37,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:37,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-21 20:14:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:37,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:14:37,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:14:37,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:14:37,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:37,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234810836] [2021-10-21 20:14:37,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234810836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:14:37,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:14:37,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 20:14:37,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116652494] [2021-10-21 20:14:37,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:14:37,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:37,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:14:37,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:14:37,976 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) [2021-10-21 20:14:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:38,090 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-10-21 20:14:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:14:38,091 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 [2021-10-21 20:14:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:38,092 INFO L225 Difference]: With dead ends: 65 [2021-10-21 20:14:38,092 INFO L226 Difference]: Without dead ends: 59 [2021-10-21 20:14:38,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:14:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-21 20:14:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-21 20:14:38,095 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) [2021-10-21 20:14:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-21 20:14:38,096 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 29 [2021-10-21 20:14:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:38,097 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-21 20:14:38,097 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) [2021-10-21 20:14:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-21 20:14:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:14:38,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:38,098 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:38,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:38,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:38,311 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1742564328, now seen corresponding path program 1 times [2021-10-21 20:14:38,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:38,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729105784] [2021-10-21 20:14:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:38,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:38,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:38,313 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:38,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-21 20:14:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:38,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:14:38,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 20:14:38,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:14:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 20:14:38,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:14:38,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729105784] [2021-10-21 20:14:38,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729105784] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:38,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:38,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:14:38,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208422000] [2021-10-21 20:14:38,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:14:38,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:14:38,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:14:38,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:38,783 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) [2021-10-21 20:14:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:38,818 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-21 20:14:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:14:38,819 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 [2021-10-21 20:14:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:38,820 INFO L225 Difference]: With dead ends: 58 [2021-10-21 20:14:38,820 INFO L226 Difference]: Without dead ends: 58 [2021-10-21 20:14:38,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-21 20:14:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-21 20:14:38,822 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) [2021-10-21 20:14:38,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-21 20:14:38,823 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 29 [2021-10-21 20:14:38,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:38,823 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-21 20:14:38,823 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) [2021-10-21 20:14:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-21 20:14:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 20:14:38,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:38,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:38,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:39,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:39,025 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-21 20:14:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:39,026 INFO L82 PathProgramCache]: Analyzing trace with hash 188620705, now seen corresponding path program 1 times [2021-10-21 20:14:39,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:14:39,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636119996] [2021-10-21 20:14:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:39,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:14:39,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:14:39,027 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:14:39,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-21 20:14:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:14:39,267 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:14:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:14:39,359 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 20:14:39,359 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:14:39,360 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:14:39,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:14:39,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:14:39,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:14:39,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr0REQUIRES_VIOLATION [2021-10-21 20:14:39,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr1REQUIRES_VIOLATION [2021-10-21 20:14:39,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:14:39,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:14:39,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:14:39,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:39,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:14:39,570 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:14:39,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:14:39 BoogieIcfgContainer [2021-10-21 20:14:39,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:14:39,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:14:39,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:14:39,623 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:14:39,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:26" (3/4) ... [2021-10-21 20:14:39,630 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:14:39,680 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:14:39,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:14:39,681 INFO L168 Benchmark]: Toolchain (without parser) took 14704.46 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 37.4 MB in the beginning and 50.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:39,682 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:14:39,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.91 ms. Allocated memory is still 58.7 MB. Free memory was 37.2 MB in the beginning and 31.2 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:39,683 INFO L168 Benchmark]: Boogie Preprocessor took 111.45 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 28.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:39,683 INFO L168 Benchmark]: RCFGBuilder took 809.45 ms. Allocated memory is still 58.7 MB. Free memory was 28.5 MB in the beginning and 23.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:39,684 INFO L168 Benchmark]: TraceAbstraction took 13109.08 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 22.5 MB in the beginning and 52.9 MB in the end (delta: -30.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:14:39,684 INFO L168 Benchmark]: Witness Printer took 57.60 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 50.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:14:39,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 609.91 ms. Allocated memory is still 58.7 MB. Free memory was 37.2 MB in the beginning and 31.2 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.45 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 28.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 809.45 ms. Allocated memory is still 58.7 MB. Free memory was 28.5 MB in the beginning and 23.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13109.08 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 22.5 MB in the beginning and 52.9 MB in the end (delta: -30.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.60 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 50.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 12964.9ms, OverallIterations: 15, TraceHistogramMax: 2, EmptinessCheckTime: 48.1ms, AutomataDifference: 2864.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 468 SDtfs, 411 SDslu, 944 SDs, 0 SdLazy, 608 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1435.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1768.6ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 132.5ms AutomataMinimizationTime, 14 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 144.6ms SsaConstructionTime, 486.6ms SatisfiabilityAnalysisTime, 3826.7ms 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! [2021-10-21 20:14:39,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46501168-c4b1-4f8f-a132-0932c144dd73/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...