./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/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_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef75293aeb91e37969e4557310245e0c38a479cd ................................................................................................................................... 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_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/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_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef75293aeb91e37969e4557310245e0c38a479cd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-4e77c04 [2021-10-13 00:10:43,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:10:43,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:10:43,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:10:43,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:10:43,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:10:43,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:10:43,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:10:43,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:10:43,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:10:43,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:10:43,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:10:43,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:10:43,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:10:43,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:10:43,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:10:43,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:10:43,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:10:43,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:10:43,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:10:43,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:10:43,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:10:43,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:10:43,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:10:43,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:10:43,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:10:43,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:10:43,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:10:43,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:10:43,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:10:43,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:10:43,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:10:43,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:10:43,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:10:43,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:10:43,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:10:43,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:10:43,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:10:43,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:10:43,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:10:43,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:10:43,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:10:43,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:10:43,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:10:43,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:10:43,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:10:43,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:10:43,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:10:43,358 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:10:43,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:10:43,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:10:43,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:10:43,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:10:43,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:10:43,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:10:43,361 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:10:43,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:10:43,362 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:10:43,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:10:43,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:10:43,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:10:43,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:10:43,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:10:43,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:10:43,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:10:43,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:10:43,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:10:43,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:10:43,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:10:43,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:10:43,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:10:43,366 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_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef75293aeb91e37969e4557310245e0c38a479cd [2021-10-13 00:10:43,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:10:43,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:10:43,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:10:43,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:10:43,740 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:10:43,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-13 00:10:43,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/c5c956c1a/ff23400b79194c6db44b429268bfdcf5/FLAGa6c8a6ce1 [2021-10-13 00:10:44,381 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:10:44,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-13 00:10:44,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/c5c956c1a/ff23400b79194c6db44b429268bfdcf5/FLAGa6c8a6ce1 [2021-10-13 00:10:44,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/c5c956c1a/ff23400b79194c6db44b429268bfdcf5 [2021-10-13 00:10:44,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:10:44,697 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:10:44,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:10:44,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:10:44,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:10:44,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:44" (1/1) ... [2021-10-13 00:10:44,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fa460a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:44, skipping insertion in model container [2021-10-13 00:10:44,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:44" (1/1) ... [2021-10-13 00:10:44,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:10:44,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:10:45,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:10:45,152 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 00:10:45,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6bb2204a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:45, skipping insertion in model container [2021-10-13 00:10:45,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:10:45,154 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 00:10:45,156 INFO L168 Benchmark]: Toolchain (without parser) took 457.68 ms. Allocated memory is still 115.3 MB. Free memory was 77.4 MB in the beginning and 88.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:45,158 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:10:45,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.78 ms. Allocated memory is still 115.3 MB. Free memory was 77.1 MB in the beginning and 88.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:10:45,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.78 ms. Allocated memory is still 115.3 MB. Free memory was 77.1 MB in the beginning and 88.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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-4e77c04 [2021-10-13 00:10:47,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:10:47,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:10:47,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:10:47,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:10:47,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:10:47,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:10:47,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:10:47,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:10:47,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:10:47,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:10:47,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:10:47,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:10:47,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:10:47,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:10:47,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:10:47,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:10:47,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:10:47,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:10:47,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:10:47,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:10:47,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:10:47,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:10:47,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:10:47,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:10:47,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:10:47,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:10:47,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:10:47,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:10:47,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:10:47,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:10:47,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:10:47,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:10:47,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:10:47,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:10:47,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:10:47,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:10:47,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:10:47,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:10:47,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:10:47,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:10:47,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:10:47,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:10:47,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:10:47,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:10:47,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:10:47,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:10:47,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:10:47,579 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:10:47,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:10:47,580 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:10:47,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:10:47,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:10:47,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:10:47,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:10:47,581 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:10:47,582 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:10:47,582 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:10:47,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:10:47,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:10:47,582 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:10:47,582 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:10:47,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:10:47,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:10:47,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:10:47,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:10:47,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:10:47,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:10:47,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:10:47,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:10:47,584 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:10:47,585 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:10:47,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:10:47,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:10:47,585 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_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef75293aeb91e37969e4557310245e0c38a479cd [2021-10-13 00:10:47,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:10:47,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:10:47,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:10:48,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:10:48,000 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:10:48,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-13 00:10:48,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/2dabbc48a/cd1ae112701c45c49c227e61216c2a68/FLAGe07b94ffd [2021-10-13 00:10:48,655 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:10:48,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-13 00:10:48,682 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/2dabbc48a/cd1ae112701c45c49c227e61216c2a68/FLAGe07b94ffd [2021-10-13 00:10:48,915 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/data/2dabbc48a/cd1ae112701c45c49c227e61216c2a68 [2021-10-13 00:10:48,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:10:48,920 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:10:48,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:10:48,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:10:48,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:10:48,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:48" (1/1) ... [2021-10-13 00:10:48,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788e3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:48, skipping insertion in model container [2021-10-13 00:10:48,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:48" (1/1) ... [2021-10-13 00:10:48,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:10:48,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:10:49,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:10:49,321 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 00:10:49,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:10:49,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:10:49,369 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:10:49,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:10:49,457 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:10:49,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49 WrapperNode [2021-10-13 00:10:49,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:10:49,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:10:49,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:10:49,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:10:49,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:10:49,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:10:49,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:10:49,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:10:49,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (1/1) ... [2021-10-13 00:10:49,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:10:49,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:10:49,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:10:49,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:10:49,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:10:49,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:10:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:10:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:10:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:10:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:10:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:10:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:10:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure expandArray [2021-10-13 00:10:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:10:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2021-10-13 00:10:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:10:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:10:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:10:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:10:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:10:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:10:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:10:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:10:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:10:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:10:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:10:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:10:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:10:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:10:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:10:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:10:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:10:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:10:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:10:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:10:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:10:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:10:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:10:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:10:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:10:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:10:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:10:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:10:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:10:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:10:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:10:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:10:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:10:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:10:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:10:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:10:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:10:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:10:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:10:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:10:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:10:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:10:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:10:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:10:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:10:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:10:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:10:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:10:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:10:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:10:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:10:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:10:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:10:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:10:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:10:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:10:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:10:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:10:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:10:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:10:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:10:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:10:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:10:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:10:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:10:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:10:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:10:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:10:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:10:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:10:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:10:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:10:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:10:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:10:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:10:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:10:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:10:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:10:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:10:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:10:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:10:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:10:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:10:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:10:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:10:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:10:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:10:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:10:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:10:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:10:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:10:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:10:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:10:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:10:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:10:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:10:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:10:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:10:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:10:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:10:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:10:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:10:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:10:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:10:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:10:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:10:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:10:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:10:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure expandArray [2021-10-13 00:10:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2021-10-13 00:10:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:10:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:10:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:10:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:10:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:10:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:10:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:10:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:10:50,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:10:50,271 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 00:10:50,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:50 BoogieIcfgContainer [2021-10-13 00:10:50,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:10:50,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:10:50,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:10:50,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:10:50,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:10:48" (1/3) ... [2021-10-13 00:10:50,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f58b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:50, skipping insertion in model container [2021-10-13 00:10:50,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:49" (2/3) ... [2021-10-13 00:10:50,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f58b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:50, skipping insertion in model container [2021-10-13 00:10:50,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:50" (3/3) ... [2021-10-13 00:10:50,281 INFO L111 eAbstractionObserver]: Analyzing ICFG array-realloc-1.i [2021-10-13 00:10:50,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:10:50,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-13 00:10:50,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:10:50,339 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:10:50,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-13 00:10:50,354 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) [2021-10-13 00:10:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:10:50,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:50,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:50,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:50,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1774917903, now seen corresponding path program 1 times [2021-10-13 00:10:50,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:50,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963353081] [2021-10-13 00:10:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:50,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:50,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:50,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:50,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:10:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:50,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:10:50,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:50,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:50,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:50,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963353081] [2021-10-13 00:10:50,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963353081] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:50,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:50,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:10:50,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054246379] [2021-10-13 00:10:50,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:10:50,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:10:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:50,754 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) [2021-10-13 00:10:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:50,854 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-10-13 00:10:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:10:50,856 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 [2021-10-13 00:10:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:50,865 INFO L225 Difference]: With dead ends: 55 [2021-10-13 00:10:50,865 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 00:10:50,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 00:10:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-10-13 00:10:50,911 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) [2021-10-13 00:10:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-13 00:10:50,915 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 8 [2021-10-13 00:10:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:50,916 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-13 00:10:50,916 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) [2021-10-13 00:10:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-13 00:10:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:10:50,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:50,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:50,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:51,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:51,131 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash -812119182, now seen corresponding path program 1 times [2021-10-13 00:10:51,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:51,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132463876] [2021-10-13 00:10:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:51,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:51,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:51,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:51,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:10:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:51,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:10:51,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:51,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:51,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:51,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132463876] [2021-10-13 00:10:51,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132463876] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:51,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:51,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:10:51,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714861812] [2021-10-13 00:10:51,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:10:51,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:10:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:51,374 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) [2021-10-13 00:10:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:51,390 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-13 00:10:51,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:10:51,391 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 [2021-10-13 00:10:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:51,393 INFO L225 Difference]: With dead ends: 39 [2021-10-13 00:10:51,393 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 00:10:51,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 00:10:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-13 00:10:51,401 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) [2021-10-13 00:10:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-13 00:10:51,404 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 9 [2021-10-13 00:10:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:51,404 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-13 00:10:51,405 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) [2021-10-13 00:10:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-13 00:10:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:10:51,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:51,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:51,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:51,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:51,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:51,618 INFO L82 PathProgramCache]: Analyzing trace with hash -386852574, now seen corresponding path program 1 times [2021-10-13 00:10:51,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:51,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348362969] [2021-10-13 00:10:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:51,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:51,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:51,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:51,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:10:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:51,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:10:51,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:51,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:51,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:51,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348362969] [2021-10-13 00:10:51,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348362969] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:51,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:51,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:10:51,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169686528] [2021-10-13 00:10:51,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:10:51,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:10:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:51,847 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) [2021-10-13 00:10:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:51,885 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-10-13 00:10:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:10:51,886 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 [2021-10-13 00:10:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:51,887 INFO L225 Difference]: With dead ends: 46 [2021-10-13 00:10:51,887 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 00:10:51,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 00:10:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-13 00:10:51,892 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) [2021-10-13 00:10:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-13 00:10:51,893 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2021-10-13 00:10:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:51,893 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-13 00:10:51,894 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) [2021-10-13 00:10:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-13 00:10:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:10:51,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:51,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:51,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:52,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:52,106 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:52,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:52,107 INFO L82 PathProgramCache]: Analyzing trace with hash -171591004, now seen corresponding path program 1 times [2021-10-13 00:10:52,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:52,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249993710] [2021-10-13 00:10:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:52,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:52,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:52,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:10:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:52,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:10:52,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:52,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:52,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:52,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249993710] [2021-10-13 00:10:52,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249993710] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:52,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:52,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 00:10:52,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143474575] [2021-10-13 00:10:52,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:10:52,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:10:52,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:10:52,457 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) [2021-10-13 00:10:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:52,532 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-10-13 00:10:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:10:52,533 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 [2021-10-13 00:10:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:52,535 INFO L225 Difference]: With dead ends: 52 [2021-10-13 00:10:52,535 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 00:10:52,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:10:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 00:10:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-13 00:10:52,548 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) [2021-10-13 00:10:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-13 00:10:52,550 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2021-10-13 00:10:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:52,551 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-13 00:10:52,551 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) [2021-10-13 00:10:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-13 00:10:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:10:52,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:52,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:52,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:52,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:52,780 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash -170667483, now seen corresponding path program 1 times [2021-10-13 00:10:52,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:52,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928667755] [2021-10-13 00:10:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:52,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:52,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:52,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:10:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:52,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:10:52,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:53,051 INFO L354 Elim1Store]: treesize reduction 10, result has 50.0 percent of original size [2021-10-13 00:10:53,053 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 [2021-10-13 00:10:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:53,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:53,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:53,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928667755] [2021-10-13 00:10:53,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928667755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:53,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:53,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 00:10:53,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958563145] [2021-10-13 00:10:53,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:10:53,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:53,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:10:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:53,194 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) [2021-10-13 00:10:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:53,311 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-10-13 00:10:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:10:53,312 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 [2021-10-13 00:10:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:53,313 INFO L225 Difference]: With dead ends: 45 [2021-10-13 00:10:53,313 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 00:10:53,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 00:10:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-13 00:10:53,317 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) [2021-10-13 00:10:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-13 00:10:53,318 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 17 [2021-10-13 00:10:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:53,318 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-13 00:10:53,319 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) [2021-10-13 00:10:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-13 00:10:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:10:53,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:53,319 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:53,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:53,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:53,520 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting expandArrayErr1REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:53,521 INFO L82 PathProgramCache]: Analyzing trace with hash -170667482, now seen corresponding path program 1 times [2021-10-13 00:10:53,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:53,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218277609] [2021-10-13 00:10:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:53,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:53,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:53,523 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:53,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:10:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:53,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:10:53,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:53,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:10:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:53,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:54,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:54,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218277609] [2021-10-13 00:10:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218277609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:54,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:54,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 00:10:54,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88936127] [2021-10-13 00:10:54,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:10:54,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:10:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:10:54,710 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) [2021-10-13 00:10:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:56,392 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2021-10-13 00:10:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:10:56,393 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 [2021-10-13 00:10:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:56,394 INFO L225 Difference]: With dead ends: 121 [2021-10-13 00:10:56,394 INFO L226 Difference]: Without dead ends: 119 [2021-10-13 00:10:56,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1341.2ms TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:10:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-13 00:10:56,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 63. [2021-10-13 00:10:56,401 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) [2021-10-13 00:10:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-13 00:10:56,402 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 17 [2021-10-13 00:10:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:56,403 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-13 00:10:56,403 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) [2021-10-13 00:10:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-13 00:10:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:10:56,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:56,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:56,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 00:10:56,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:56,611 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:56,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:56,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2028589773, now seen corresponding path program 1 times [2021-10-13 00:10:56,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:56,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695872724] [2021-10-13 00:10:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:56,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:56,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:56,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:56,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:10:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:56,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:10:56,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:56,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:56,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:56,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695872724] [2021-10-13 00:10:56,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695872724] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:56,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:56,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:10:56,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425157512] [2021-10-13 00:10:56,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:10:56,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:10:56,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:56,887 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) [2021-10-13 00:10:56,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:56,893 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-10-13 00:10:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:10:56,897 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 [2021-10-13 00:10:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:56,899 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:10:56,899 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 00:10:56,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:10:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 00:10:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-13 00:10:56,904 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) [2021-10-13 00:10:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-10-13 00:10:56,906 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 17 [2021-10-13 00:10:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:56,906 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-10-13 00:10:56,906 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) [2021-10-13 00:10:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-10-13 00:10:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:10:56,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:56,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:56,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:57,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:57,119 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:57,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:57,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1538226398, now seen corresponding path program 1 times [2021-10-13 00:10:57,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:57,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464946001] [2021-10-13 00:10:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:57,120 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:57,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:57,121 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:57,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:10:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:57,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:10:57,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:57,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:57,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:57,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464946001] [2021-10-13 00:10:57,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464946001] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:57,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:57,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2021-10-13 00:10:57,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132774255] [2021-10-13 00:10:57,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:10:57,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:10:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:57,398 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) [2021-10-13 00:10:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:57,432 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-10-13 00:10:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:10:57,433 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 [2021-10-13 00:10:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:57,434 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:10:57,434 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:10:57,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:10:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:10:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-13 00:10:57,439 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) [2021-10-13 00:10:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-10-13 00:10:57,440 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 18 [2021-10-13 00:10:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:57,441 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-10-13 00:10:57,441 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) [2021-10-13 00:10:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-10-13 00:10:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:10:57,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:57,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:57,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:57,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:57,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -440378001, now seen corresponding path program 1 times [2021-10-13 00:10:57,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:57,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870460341] [2021-10-13 00:10:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:57,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:57,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:57,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:57,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 00:10:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:57,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:10:57,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:57,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:10:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:57,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:58,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:58,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870460341] [2021-10-13 00:10:58,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870460341] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:58,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:58,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:10:58,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103846974] [2021-10-13 00:10:58,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:10:58,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:10:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:10:58,104 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) [2021-10-13 00:10:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:58,231 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-10-13 00:10:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:10:58,232 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 [2021-10-13 00:10:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:58,233 INFO L225 Difference]: With dead ends: 74 [2021-10-13 00:10:58,234 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 00:10:58,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:10:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 00:10:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-13 00:10:58,240 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) [2021-10-13 00:10:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-10-13 00:10:58,241 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 19 [2021-10-13 00:10:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:58,242 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-10-13 00:10:58,242 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) [2021-10-13 00:10:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-10-13 00:10:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:10:58,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:58,244 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] [2021-10-13 00:10:58,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:58,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:58,458 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:58,458 INFO L82 PathProgramCache]: Analyzing trace with hash -766816059, now seen corresponding path program 1 times [2021-10-13 00:10:58,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:58,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695914337] [2021-10-13 00:10:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:58,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:58,459 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:58,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 00:10:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:10:58,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:10:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:58,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:10:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:10:59,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:10:59,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695914337] [2021-10-13 00:10:59,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695914337] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:10:59,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:10:59,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 00:10:59,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737894322] [2021-10-13 00:10:59,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:10:59,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:10:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:10:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:10:59,083 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) [2021-10-13 00:10:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:10:59,249 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-10-13 00:10:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:10:59,250 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 [2021-10-13 00:10:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:10:59,251 INFO L225 Difference]: With dead ends: 60 [2021-10-13 00:10:59,252 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 00:10:59,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:10:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 00:10:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-13 00:10:59,256 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) [2021-10-13 00:10:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-13 00:10:59,257 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 20 [2021-10-13 00:10:59,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:10:59,257 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-13 00:10:59,257 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) [2021-10-13 00:10:59,257 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-13 00:10:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:10:59,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:10:59,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:10:59,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:10:59,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:10:59,459 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:10:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:10:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1360467952, now seen corresponding path program 1 times [2021-10-13 00:10:59,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:10:59,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391814603] [2021-10-13 00:10:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:10:59,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:10:59,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:10:59,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:10:59,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 00:10:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:10:59,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:10:59,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:00,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:11:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:00,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:11:00,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391814603] [2021-10-13 00:11:00,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391814603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:00,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:00,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-13 00:11:00,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402970179] [2021-10-13 00:11:00,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:11:00,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:11:00,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:11:00,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:11:00,334 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) [2021-10-13 00:11:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:00,567 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-13 00:11:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:11:00,568 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 [2021-10-13 00:11:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:00,569 INFO L225 Difference]: With dead ends: 59 [2021-10-13 00:11:00,569 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:11:00,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 178.9ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:11:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:11:00,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-13 00:11:00,573 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) [2021-10-13 00:11:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-13 00:11:00,574 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 22 [2021-10-13 00:11:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:00,575 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-13 00:11:00,575 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) [2021-10-13 00:11:00,575 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-13 00:11:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:11:00,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:00,577 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] [2021-10-13 00:11:00,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:00,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:11:00,784 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:11:00,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:00,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1753462742, now seen corresponding path program 1 times [2021-10-13 00:11:00,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:11:00,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732324882] [2021-10-13 00:11:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:00,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:11:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:11:00,788 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:11:00,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:11:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:01,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:11:01,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:01,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:11:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:01,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:11:01,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732324882] [2021-10-13 00:11:01,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732324882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:01,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:01,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:11:01,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292848970] [2021-10-13 00:11:01,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:11:01,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:11:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:11:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:11:01,254 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) [2021-10-13 00:11:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:01,326 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-13 00:11:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:11:01,327 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 [2021-10-13 00:11:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:01,328 INFO L225 Difference]: With dead ends: 59 [2021-10-13 00:11:01,328 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:11:01,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:11:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:11:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-13 00:11:01,332 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) [2021-10-13 00:11:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-10-13 00:11:01,333 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 27 [2021-10-13 00:11:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:01,334 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-10-13 00:11:01,334 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) [2021-10-13 00:11:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-10-13 00:11:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 00:11:01,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:01,336 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] [2021-10-13 00:11:01,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:01,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:11:01,550 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:11:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:01,551 INFO L82 PathProgramCache]: Analyzing trace with hash 64890135, now seen corresponding path program 1 times [2021-10-13 00:11:01,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:11:01,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914988113] [2021-10-13 00:11:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:01,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:11:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:11:01,552 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:11:01,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 00:11:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:01,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:11:01,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:11:01,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:11:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:11:02,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:11:02,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914988113] [2021-10-13 00:11:02,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914988113] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:11:02,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:11:02,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 00:11:02,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168469847] [2021-10-13 00:11:02,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:11:02,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:11:02,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:11:02,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:11:02,052 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) [2021-10-13 00:11:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:02,188 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-10-13 00:11:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:11:02,189 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 [2021-10-13 00:11:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:02,191 INFO L225 Difference]: With dead ends: 65 [2021-10-13 00:11:02,191 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:11:02,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:11:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:11:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-13 00:11:02,195 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) [2021-10-13 00:11:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-13 00:11:02,196 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 29 [2021-10-13 00:11:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:02,197 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-13 00:11:02,197 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) [2021-10-13 00:11:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-13 00:11:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 00:11:02,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:02,199 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] [2021-10-13 00:11:02,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:02,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:11:02,413 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:11:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:02,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1742564328, now seen corresponding path program 1 times [2021-10-13 00:11:02,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:11:02,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784378635] [2021-10-13 00:11:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:02,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:11:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:11:02,416 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:11:02,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 00:11:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:02,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:11:02,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:11:02,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:11:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:11:02,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:11:02,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784378635] [2021-10-13 00:11:02,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784378635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:02,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:02,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 00:11:02,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37993768] [2021-10-13 00:11:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:11:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:11:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:11:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:11:02,921 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) [2021-10-13 00:11:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:02,958 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-13 00:11:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:11:02,959 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 [2021-10-13 00:11:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:02,960 INFO L225 Difference]: With dead ends: 58 [2021-10-13 00:11:02,960 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 00:11:02,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:11:02,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 00:11:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-13 00:11:02,963 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) [2021-10-13 00:11:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-13 00:11:02,964 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 29 [2021-10-13 00:11:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:02,965 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-13 00:11:02,965 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) [2021-10-13 00:11:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-13 00:11:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:11:02,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:02,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:02,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:03,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:11:03,173 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-13 00:11:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:03,173 INFO L82 PathProgramCache]: Analyzing trace with hash 188620705, now seen corresponding path program 1 times [2021-10-13 00:11:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:11:03,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308572452] [2021-10-13 00:11:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:03,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:11:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:11:03,174 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:11:03,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 00:11:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:11:03,442 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:11:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:11:03,572 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:11:03,572 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:11:03,573 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:11:03,575 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:11:03,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:11:03,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:11:03,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr0REQUIRES_VIOLATION [2021-10-13 00:11:03,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr1REQUIRES_VIOLATION [2021-10-13 00:11:03,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:11:03,597 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:11:03,597 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:11:03,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:03,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:11:03,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:11:03,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:11:03 BoogieIcfgContainer [2021-10-13 00:11:03,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:11:03,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:11:03,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:11:03,875 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:11:03,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:50" (3/4) ... [2021-10-13 00:11:03,878 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:11:03,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:11:03,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:11:03,937 INFO L168 Benchmark]: Toolchain (without parser) took 15016.42 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 43.6 MB in the beginning and 28.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:03,938 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:11:03,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.82 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 38.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:03,939 INFO L168 Benchmark]: Boogie Preprocessor took 68.56 ms. Allocated memory is still 65.0 MB. Free memory was 38.0 MB in the beginning and 35.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:03,939 INFO L168 Benchmark]: RCFGBuilder took 744.62 ms. Allocated memory is still 65.0 MB. Free memory was 35.2 MB in the beginning and 34.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:03,940 INFO L168 Benchmark]: TraceAbstraction took 13598.89 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 33.4 MB in the beginning and 31.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:03,940 INFO L168 Benchmark]: Witness Printer took 61.60 ms. Allocated memory is still 98.6 MB. Free memory was 31.0 MB in the beginning and 28.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:03,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 536.82 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 38.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.56 ms. Allocated memory is still 65.0 MB. Free memory was 38.0 MB in the beginning and 35.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 744.62 ms. Allocated memory is still 65.0 MB. Free memory was 35.2 MB in the beginning and 34.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13598.89 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 33.4 MB in the beginning and 31.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. * Witness Printer took 61.60 ms. Allocated memory is still 98.6 MB. Free memory was 31.0 MB in the beginning and 28.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 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: 13494.0ms, OverallIterations: 15, TraceHistogramMax: 2, EmptinessCheckTime: 26.0ms, AutomataDifference: 2927.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 468 SDtfs, 411 SDslu, 944 SDs, 0 SdLazy, 608 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1488.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1872.0ms 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: 117.2ms AutomataMinimizationTime, 14 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 163.5ms SsaConstructionTime, 548.5ms SatisfiabilityAnalysisTime, 4086.2ms 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! [2021-10-13 00:11:04,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd45345d-b382-449f-9887-fcab893f0810/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...