./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d ................................................................................................................................... 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_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:34:28,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:34:28,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:34:29,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:34:29,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:34:29,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:34:29,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:34:29,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:34:29,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:34:29,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:34:29,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:34:29,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:34:29,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:34:29,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:34:29,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:34:29,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:34:29,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:34:29,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:34:29,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:34:29,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:34:29,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:34:29,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:34:29,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:34:29,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:34:29,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:34:29,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:34:29,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:34:29,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:34:29,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:34:29,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:34:29,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:34:29,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:34:29,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:34:29,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:34:29,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:34:29,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:34:29,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:34:29,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:34:29,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:34:29,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:34:29,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:34:29,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:34:29,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:34:29,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:34:29,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:34:29,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:34:29,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:34:29,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:34:29,131 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:34:29,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:34:29,131 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:34:29,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:34:29,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:34:29,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:34:29,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:34:29,134 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:34:29,134 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:34:29,134 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:34:29,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:34:29,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:34:29,135 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:34:29,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:34:29,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:34:29,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:34:29,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:34:29,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:34:29,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:34:29,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:34:29,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:34:29,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:34:29,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:34:29,139 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_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-10-28 23:34:29,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:34:29,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:34:29,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:34:29,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:34:29,512 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:34:29,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-28 23:34:29,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/cf94edea7/be748da2d4e94ffbbf2c4b237cfaf5b9/FLAGd4b9e3dc0 [2021-10-28 23:34:30,158 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:34:30,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-28 23:34:30,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/cf94edea7/be748da2d4e94ffbbf2c4b237cfaf5b9/FLAGd4b9e3dc0 [2021-10-28 23:34:30,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/cf94edea7/be748da2d4e94ffbbf2c4b237cfaf5b9 [2021-10-28 23:34:30,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:34:30,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:34:30,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:34:30,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:34:30,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:34:30,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:34:30" (1/1) ... [2021-10-28 23:34:30,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2d64c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:30, skipping insertion in model container [2021-10-28 23:34:30,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:34:30" (1/1) ... [2021-10-28 23:34:30,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:34:30,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:34:30,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:34:31,004 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-28 23:34:31,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25cff246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:31, skipping insertion in model container [2021-10-28 23:34:31,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:34:31,006 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 23:34:31,010 INFO L168 Benchmark]: Toolchain (without parser) took 579.79 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 81.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:34:31,012 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory was 89.9 MB in the beginning and 89.7 MB in the end (delta: 161.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:34:31,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.13 ms. Allocated memory is still 109.1 MB. Free memory was 72.0 MB in the beginning and 81.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:34:31,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory was 89.9 MB in the beginning and 89.7 MB in the end (delta: 161.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 577.13 ms. Allocated memory is still 109.1 MB. Free memory was 72.0 MB in the beginning and 81.3 MB in the end (delta: -9.2 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: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:34:33,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:34:33,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:34:33,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:34:33,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:34:33,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:34:33,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:34:33,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:34:33,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:34:33,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:34:33,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:34:33,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:34:33,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:34:33,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:34:33,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:34:33,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:34:33,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:34:33,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:34:33,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:34:33,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:34:33,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:34:33,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:34:33,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:34:33,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:34:33,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:34:33,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:34:33,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:34:33,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:34:33,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:34:33,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:34:33,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:34:33,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:34:33,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:34:33,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:34:33,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:34:33,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:34:33,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:34:33,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:34:33,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:34:33,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:34:33,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:34:33,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:34:33,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:34:33,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:34:33,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:34:33,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:34:33,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:34:33,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:34:33,523 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:34:33,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:34:33,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:34:33,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:34:33,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:34:33,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:34:33,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:34:33,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:34:33,526 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:34:33,526 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:34:33,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:34:33,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:34:33,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:34:33,527 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:34:33,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:34:33,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:34:33,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:34:33,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:34:33,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:34:33,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:34:33,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:34:33,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:34:33,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:34:33,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:34:33,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:34:33,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:34:33,530 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_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-10-28 23:34:33,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:34:33,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:34:33,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:34:33,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:34:33,966 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:34:33,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-28 23:34:34,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/74d9814da/a44f709da8604ae5ba0c856a5d437dc9/FLAGd47e54437 [2021-10-28 23:34:34,678 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:34:34,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-28 23:34:34,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/74d9814da/a44f709da8604ae5ba0c856a5d437dc9/FLAGd47e54437 [2021-10-28 23:34:34,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/data/74d9814da/a44f709da8604ae5ba0c856a5d437dc9 [2021-10-28 23:34:34,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:34:34,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:34:34,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:34:34,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:34:34,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:34:34,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:34:34" (1/1) ... [2021-10-28 23:34:34,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6946217c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:34, skipping insertion in model container [2021-10-28 23:34:34,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:34:34" (1/1) ... [2021-10-28 23:34:34,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:34:35,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:34:35,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:34:35,545 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 23:34:35,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:34:35,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:34:35,653 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:34:35,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:34:35,759 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:34:35,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35 WrapperNode [2021-10-28 23:34:35,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:34:35,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:34:35,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:34:35,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:34:35,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:34:35,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:34:35,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:34:35,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:34:35,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (1/1) ... [2021-10-28 23:34:35,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:34:35,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:34:35,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:34:35,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:34:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:34:35,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:34:35,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 23:34:35,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:34:35,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:34:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:34:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:34:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:34:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:34:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-28 23:34:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-28 23:34:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-28 23:34:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-28 23:34:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-28 23:34:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-28 23:34:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-28 23:34:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-28 23:34:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-28 23:34:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-28 23:34:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-28 23:34:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-28 23:34:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-28 23:34:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-28 23:34:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-28 23:34:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-28 23:34:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-28 23:34:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-28 23:34:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-28 23:34:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-28 23:34:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-28 23:34:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-28 23:34:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-28 23:34:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-28 23:34:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-28 23:34:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-28 23:34:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-28 23:34:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-28 23:34:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-28 23:34:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-28 23:34:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-28 23:34:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-28 23:34:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-28 23:34:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-10-28 23:34:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-10-28 23:34:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure probe1_6 [2021-10-28 23:34:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-10-28 23:34:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-28 23:34:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:34:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-28 23:34:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-28 23:34:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-28 23:34:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:34:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:34:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:34:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:34:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:34:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:34:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:34:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:34:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:34:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:34:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:34:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:34:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:34:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:34:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:34:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:34:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:34:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:34:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:34:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:34:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:34:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:34:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:34:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:34:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:34:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:34:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:34:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:34:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:34:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:34:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:34:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:34:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:34:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:34:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:34:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:34:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:34:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:34:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:34:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:34:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:34:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:34:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:34:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:34:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:34:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:34:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:34:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:34:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:34:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:34:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:34:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:34:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:34:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:34:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:34:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:34:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:34:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:34:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:34:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:34:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:34:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:34:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:34:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:34:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:34:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:34:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:34:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:34:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:34:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:34:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:34:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:34:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:34:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:34:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:34:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:34:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:34:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:34:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:34:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:34:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:34:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:34:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:34:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:34:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:34:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:34:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:34:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:34:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:34:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:34:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:34:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:34:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:34:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:34:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:34:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:34:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:34:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:34:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:34:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:34:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:34:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:34:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:34:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:34:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:34:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:34:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:34:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-28 23:34:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:34:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-28 23:34:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-28 23:34:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 23:34:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 23:34:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-28 23:34:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:34:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-28 23:34:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-28 23:34:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-28 23:34:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:34:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-28 23:34:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-28 23:34:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-28 23:34:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:34:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-28 23:34:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-28 23:34:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-28 23:34:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-28 23:34:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-28 23:34:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-28 23:34:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:34:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-28 23:34:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-28 23:34:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-28 23:34:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-28 23:34:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-28 23:34:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:34:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:34:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-28 23:34:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-28 23:34:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 23:34:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-28 23:34:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-28 23:34:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-28 23:34:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-28 23:34:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-28 23:34:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-28 23:34:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-28 23:34:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-28 23:34:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-28 23:34:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-28 23:34:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-28 23:34:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-28 23:34:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-28 23:34:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-28 23:34:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-10-28 23:34:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-10-28 23:34:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure probe1_6 [2021-10-28 23:34:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-10-28 23:34:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-28 23:34:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:34:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:34:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:34:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 23:34:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:34:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:34:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-28 23:34:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-28 23:34:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-28 23:34:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-28 23:34:36,606 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 23:34:36,943 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 23:34:37,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:34:37,318 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 23:34:37,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:34:37 BoogieIcfgContainer [2021-10-28 23:34:37,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:34:37,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:34:37,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:34:37,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:34:37,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:34:34" (1/3) ... [2021-10-28 23:34:37,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a661d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:34:37, skipping insertion in model container [2021-10-28 23:34:37,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:35" (2/3) ... [2021-10-28 23:34:37,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a661d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:34:37, skipping insertion in model container [2021-10-28 23:34:37,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:34:37" (3/3) ... [2021-10-28 23:34:37,337 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2021-10-28 23:34:37,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:34:37,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2021-10-28 23:34:37,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:34:37,391 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:34:37,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2021-10-28 23:34:37,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-28 23:34:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:34:37,416 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:37,417 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:37,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:37,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1048832464, now seen corresponding path program 1 times [2021-10-28 23:34:37,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:37,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856628459] [2021-10-28 23:34:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:37,435 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:37,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:37,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:37,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:34:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:37,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:34:37,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:37,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:37,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:37,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856628459] [2021-10-28 23:34:37,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856628459] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:37,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:37,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:34:37,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082880782] [2021-10-28 23:34:37,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:34:37,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:37,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:34:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:37,949 INFO L87 Difference]: Start difference. First operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:34:38,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:38,029 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-10-28 23:34:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:34:38,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-10-28 23:34:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:38,039 INFO L225 Difference]: With dead ends: 85 [2021-10-28 23:34:38,040 INFO L226 Difference]: Without dead ends: 82 [2021-10-28 23:34:38,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-28 23:34:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-10-28 23:34:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 49 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-28 23:34:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-28 23:34:38,083 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2021-10-28 23:34:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:38,084 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-28 23:34:38,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:34:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-28 23:34:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:34:38,085 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:38,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:38,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:38,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:38,297 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:38,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash 852318959, now seen corresponding path program 1 times [2021-10-28 23:34:38,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:38,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796473789] [2021-10-28 23:34:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:38,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:38,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:38,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:34:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:38,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:34:38,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:38,548 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 23:34:38,548 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-28 23:34:38,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-28 23:34:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:38,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:38,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-28 23:34:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:39,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:39,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796473789] [2021-10-28 23:34:39,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796473789] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:39,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:39,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:34:39,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228587306] [2021-10-28 23:34:39,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:34:39,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:34:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:39,044 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:34:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:39,248 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2021-10-28 23:34:39,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:34:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-10-28 23:34:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:39,252 INFO L225 Difference]: With dead ends: 108 [2021-10-28 23:34:39,252 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 23:34:39,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:34:39,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 23:34:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2021-10-28 23:34:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.48) internal successors, (74), 63 states have internal predecessors, (74), 10 states have call successors, (10), 8 states have call predecessors, (10), 10 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2021-10-28 23:34:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2021-10-28 23:34:39,279 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 20 [2021-10-28 23:34:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:39,280 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2021-10-28 23:34:39,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:34:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2021-10-28 23:34:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:34:39,282 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:39,282 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:39,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:39,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:39,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:39,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash 852318960, now seen corresponding path program 1 times [2021-10-28 23:34:39,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:39,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413970462] [2021-10-28 23:34:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:39,496 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:39,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:39,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:39,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:34:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:39,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:34:39,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:39,709 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 23:34:39,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 23:34:39,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-28 23:34:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:39,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:40,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 23:34:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:40,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:40,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413970462] [2021-10-28 23:34:40,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413970462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:40,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:40,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:34:40,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266199547] [2021-10-28 23:34:40,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:34:40,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:34:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:34:40,572 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:34:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:40,884 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2021-10-28 23:34:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:34:40,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-10-28 23:34:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:40,887 INFO L225 Difference]: With dead ends: 120 [2021-10-28 23:34:40,887 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 23:34:40,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:34:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 23:34:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2021-10-28 23:34:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 80 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-28 23:34:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-10-28 23:34:40,899 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2021-10-28 23:34:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:40,899 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-10-28 23:34:40,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:34:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-10-28 23:34:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:34:40,901 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:40,901 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:40,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:41,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:41,117 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2010052609, now seen corresponding path program 1 times [2021-10-28 23:34:41,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:41,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758135691] [2021-10-28 23:34:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:41,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:41,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:41,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:41,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:34:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:41,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:34:41,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:41,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:41,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:41,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758135691] [2021-10-28 23:34:41,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758135691] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:41,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:41,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:34:41,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206169906] [2021-10-28 23:34:41,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:34:41,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:34:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:41,517 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:34:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:41,541 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2021-10-28 23:34:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:34:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-10-28 23:34:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:41,544 INFO L225 Difference]: With dead ends: 103 [2021-10-28 23:34:41,544 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 23:34:41,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 23:34:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-28 23:34:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 79 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-28 23:34:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2021-10-28 23:34:41,553 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2021-10-28 23:34:41,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:41,554 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2021-10-28 23:34:41,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:34:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2021-10-28 23:34:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:34:41,555 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:41,555 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:41,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:41,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:41,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1260199192, now seen corresponding path program 1 times [2021-10-28 23:34:41,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:41,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142012390] [2021-10-28 23:34:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:41,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:41,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:41,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:41,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:34:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:41,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:34:41,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:42,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:42,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:42,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142012390] [2021-10-28 23:34:42,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142012390] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:42,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:42,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:34:42,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690358550] [2021-10-28 23:34:42,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:34:42,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:34:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:34:42,207 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 23:34:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:42,283 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2021-10-28 23:34:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:34:42,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-10-28 23:34:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:42,289 INFO L225 Difference]: With dead ends: 113 [2021-10-28 23:34:42,289 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 23:34:42,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:34:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 23:34:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2021-10-28 23:34:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 79 states have internal predecessors, (94), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-28 23:34:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-10-28 23:34:42,310 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 22 [2021-10-28 23:34:42,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:42,310 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-10-28 23:34:42,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 23:34:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-10-28 23:34:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:34:42,313 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:42,314 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:42,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:42,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:42,525 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2112879025, now seen corresponding path program 1 times [2021-10-28 23:34:42,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:42,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544995362] [2021-10-28 23:34:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:42,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:42,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:42,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:42,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:34:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:42,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:34:42,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:43,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:43,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:43,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544995362] [2021-10-28 23:34:43,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544995362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:43,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:43,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-28 23:34:43,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847766899] [2021-10-28 23:34:43,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:34:43,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:34:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:34:43,289 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 23:34:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:43,591 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2021-10-28 23:34:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:34:43,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-10-28 23:34:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:43,593 INFO L225 Difference]: With dead ends: 114 [2021-10-28 23:34:43,593 INFO L226 Difference]: Without dead ends: 114 [2021-10-28 23:34:43,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:34:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-28 23:34:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-10-28 23:34:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.393939393939394) internal successors, (92), 78 states have internal predecessors, (92), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-28 23:34:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-10-28 23:34:43,603 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 23 [2021-10-28 23:34:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:43,603 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-10-28 23:34:43,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-28 23:34:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-10-28 23:34:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:34:43,604 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:43,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:43,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:43,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:43,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:43,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1074740801, now seen corresponding path program 1 times [2021-10-28 23:34:43,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:43,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918874020] [2021-10-28 23:34:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:43,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:43,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:43,820 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:43,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:34:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:44,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:34:44,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:44,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:34:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:44,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:44,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:44,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918874020] [2021-10-28 23:34:44,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918874020] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:44,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:44,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-28 23:34:44,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163189924] [2021-10-28 23:34:44,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:34:44,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:34:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:34:44,316 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:34:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:44,479 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2021-10-28 23:34:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:34:44,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-28 23:34:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:44,481 INFO L225 Difference]: With dead ends: 105 [2021-10-28 23:34:44,481 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 23:34:44,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:34:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 23:34:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2021-10-28 23:34:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.378787878787879) internal successors, (91), 78 states have internal predecessors, (91), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-28 23:34:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-10-28 23:34:44,490 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 24 [2021-10-28 23:34:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:44,491 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-10-28 23:34:44,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:34:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-10-28 23:34:44,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:34:44,492 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:44,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:44,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 23:34:44,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:44,703 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash 569182176, now seen corresponding path program 1 times [2021-10-28 23:34:44,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:44,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146424421] [2021-10-28 23:34:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:44,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:44,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:44,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:44,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:34:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:44,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:34:44,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:45,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:45,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:45,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146424421] [2021-10-28 23:34:45,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146424421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:45,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:45,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:34:45,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221262085] [2021-10-28 23:34:45,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:34:45,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:45,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:34:45,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:45,165 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:34:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:45,186 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-10-28 23:34:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:34:45,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-28 23:34:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:45,189 INFO L225 Difference]: With dead ends: 67 [2021-10-28 23:34:45,189 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 23:34:45,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:45,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 23:34:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-28 23:34:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 47 states have internal predecessors, (50), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-28 23:34:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-10-28 23:34:45,194 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 24 [2021-10-28 23:34:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:45,194 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-10-28 23:34:45,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:34:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-10-28 23:34:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:34:45,196 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:45,196 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:45,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:45,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:45,409 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe1_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:45,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1905668747, now seen corresponding path program 1 times [2021-10-28 23:34:45,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:45,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801946219] [2021-10-28 23:34:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:45,410 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:45,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:45,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:45,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:34:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:45,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:34:45,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:45,673 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 23:34:45,673 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-28 23:34:45,859 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 23:34:45,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-28 23:34:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:46,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:46,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:46,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801946219] [2021-10-28 23:34:46,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801946219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:46,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:46,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-10-28 23:34:46,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304215290] [2021-10-28 23:34:46,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:34:46,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:46,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:34:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:34:46,316 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 23:34:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:46,670 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-10-28 23:34:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:34:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-10-28 23:34:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:34:46,671 INFO L225 Difference]: With dead ends: 67 [2021-10-28 23:34:46,671 INFO L226 Difference]: Without dead ends: 67 [2021-10-28 23:34:46,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:34:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-28 23:34:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2021-10-28 23:34:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-28 23:34:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-10-28 23:34:46,675 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 28 [2021-10-28 23:34:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:34:46,676 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-10-28 23:34:46,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 23:34:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-10-28 23:34:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:34:46,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:34:46,677 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:46,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:34:46,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:34:46,884 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe1_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:34:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1905668746, now seen corresponding path program 1 times [2021-10-28 23:34:46,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:34:46,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221294781] [2021-10-28 23:34:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:46,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:34:46,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:34:46,888 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:34:46,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:34:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:47,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:34:47,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:34:47,161 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 23:34:47,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 23:34:51,419 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:34:51,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-28 23:34:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:51,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:34:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:34:53,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:34:53,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221294781] [2021-10-28 23:34:53,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221294781] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:53,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:53,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-28 23:34:53,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631930398] [2021-10-28 23:34:53,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:34:53,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:34:53,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:34:53,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-28 23:34:53,811 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-28 23:35:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:35:01,996 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-10-28 23:35:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:35:01,997 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-10-28 23:35:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:35:01,999 INFO L225 Difference]: With dead ends: 60 [2021-10-28 23:35:01,999 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 23:35:02,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-10-28 23:35:02,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 23:35:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-28 23:35:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 44 states have internal predecessors, (46), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-28 23:35:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-10-28 23:35:02,004 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 28 [2021-10-28 23:35:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:35:02,004 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-10-28 23:35:02,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-28 23:35:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-10-28 23:35:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:35:02,006 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:35:02,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:35:02,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:35:02,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:35:02,220 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:35:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:35:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -950633798, now seen corresponding path program 1 times [2021-10-28 23:35:02,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:35:02,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465685556] [2021-10-28 23:35:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:35:02,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:35:02,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:35:02,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:35:02,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 23:35:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:35:02,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:35:02,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:35:02,555 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 23:35:02,555 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-28 23:35:02,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-28 23:35:02,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-28 23:35:02,950 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-28 23:35:02,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2021-10-28 23:35:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:03,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:35:03,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:35:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:35:03,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:35:03,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465685556] [2021-10-28 23:35:03,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465685556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:35:03,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:35:03,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-28 23:35:03,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106195423] [2021-10-28 23:35:03,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:35:03,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:35:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:35:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:35:03,678 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-28 23:36:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:32,428 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-10-28 23:36:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:36:32,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-10-28 23:36:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:36:32,430 INFO L225 Difference]: With dead ends: 64 [2021-10-28 23:36:32,430 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 23:36:32,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=96, Invalid=320, Unknown=4, NotChecked=0, Total=420 [2021-10-28 23:36:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 23:36:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 23:36:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 37 states have internal predecessors, (38), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:36:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-10-28 23:36:32,434 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 29 [2021-10-28 23:36:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:36:32,434 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-10-28 23:36:32,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-28 23:36:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-10-28 23:36:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 23:36:32,435 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:36:32,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:32,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:32,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:36:32,644 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:36:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash 657399931, now seen corresponding path program 1 times [2021-10-28 23:36:32,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:36:32,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920231245] [2021-10-28 23:36:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:32,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:36:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:36:32,646 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:36:32,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 23:36:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:32,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:36:32,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:33,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:36:33,238 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-28 23:36:33,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2021-10-28 23:36:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:33,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:36:33,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920231245] [2021-10-28 23:36:33,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920231245] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:33,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:33,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 23:36:33,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987559069] [2021-10-28 23:36:33,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:36:33,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:36:33,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:36:33,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:36:33,329 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:36:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:33,563 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-28 23:36:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:36:33,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-10-28 23:36:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:36:33,565 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:36:33,565 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 23:36:33,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:36:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 23:36:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-28 23:36:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 36 states have internal predecessors, (37), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:36:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-28 23:36:33,568 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 36 [2021-10-28 23:36:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:36:33,569 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-28 23:36:33,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 23:36:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-28 23:36:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 23:36:33,570 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:36:33,570 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:33,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:33,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:36:33,780 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting disconnect_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:36:33,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:33,781 INFO L85 PathProgramCache]: Analyzing trace with hash 657399932, now seen corresponding path program 1 times [2021-10-28 23:36:33,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:36:33,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543245452] [2021-10-28 23:36:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:33,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:36:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:36:33,783 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:36:33,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 23:36:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:34,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:36:34,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:34,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:36:34,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 23:36:35,080 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:36:35,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 23:36:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:35,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:36:35,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543245452] [2021-10-28 23:36:35,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543245452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:35,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:35,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-28 23:36:35,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10198092] [2021-10-28 23:36:35,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:36:35,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:36:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:36:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:36:35,587 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-28 23:36:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:36,098 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-10-28 23:36:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:36:36,100 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 36 [2021-10-28 23:36:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:36:36,101 INFO L225 Difference]: With dead ends: 51 [2021-10-28 23:36:36,101 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 23:36:36,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:36:36,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 23:36:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-28 23:36:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 35 states have internal predecessors, (36), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:36:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-10-28 23:36:36,104 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 36 [2021-10-28 23:36:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:36:36,104 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-10-28 23:36:36,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-28 23:36:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-10-28 23:36:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 23:36:36,105 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:36:36,106 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:36,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-28 23:36:36,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:36:36,308 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:36:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:36,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1095438251, now seen corresponding path program 1 times [2021-10-28 23:36:36,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:36:36,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845266925] [2021-10-28 23:36:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:36,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:36:36,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:36:36,312 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:36:36,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 23:36:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:36,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:36:36,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:36,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-10-28 23:36:37,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 23:36:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:37,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:36:37,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-28 23:36:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:37,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:36:37,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845266925] [2021-10-28 23:36:37,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845266925] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:37,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:37,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-28 23:36:37,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662545704] [2021-10-28 23:36:37,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:36:37,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:36:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:36:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:36:37,507 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 23:36:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:37,914 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-10-28 23:36:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:36:37,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2021-10-28 23:36:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:36:37,915 INFO L225 Difference]: With dead ends: 50 [2021-10-28 23:36:37,915 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:36:37,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:36:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:36:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 23:36:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:36:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-28 23:36:37,918 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 37 [2021-10-28 23:36:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:36:37,918 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-28 23:36:37,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 23:36:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-28 23:36:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:36:37,919 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:36:37,919 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:37,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:38,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:36:38,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:36:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash 401153019, now seen corresponding path program 1 times [2021-10-28 23:36:38,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:36:38,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955892260] [2021-10-28 23:36:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:38,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:36:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:36:38,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:36:38,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 23:36:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:38,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:36:38,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:39,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2021-10-28 23:36:39,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-28 23:36:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:39,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:36:39,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-28 23:36:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:40,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:36:40,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955892260] [2021-10-28 23:36:40,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955892260] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:40,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:40,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 21 [2021-10-28 23:36:40,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670424358] [2021-10-28 23:36:40,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 23:36:40,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:36:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 23:36:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:36:40,440 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-28 23:36:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:41,832 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-28 23:36:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:36:41,833 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 38 [2021-10-28 23:36:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:36:41,833 INFO L225 Difference]: With dead ends: 49 [2021-10-28 23:36:41,833 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 23:36:41,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-10-28 23:36:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 23:36:41,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 23:36:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.096774193548387) internal successors, (34), 33 states have internal predecessors, (34), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:36:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-28 23:36:41,838 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 38 [2021-10-28 23:36:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:36:41,838 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-28 23:36:41,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-28 23:36:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-28 23:36:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 23:36:41,840 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:36:41,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:41,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:42,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:36:42,055 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:36:42,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1096175518, now seen corresponding path program 1 times [2021-10-28 23:36:42,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:36:42,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494821736] [2021-10-28 23:36:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:42,057 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:36:42,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:36:42,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:36:42,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 23:36:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:42,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:36:42,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:42,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:36:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:42,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:36:42,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494821736] [2021-10-28 23:36:42,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494821736] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:42,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:42,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:36:42,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937572753] [2021-10-28 23:36:42,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:36:42,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:36:42,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:36:42,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:36:42,794 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 23:36:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:42,802 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-10-28 23:36:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:36:42,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2021-10-28 23:36:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:36:42,803 INFO L225 Difference]: With dead ends: 48 [2021-10-28 23:36:42,803 INFO L226 Difference]: Without dead ends: 48 [2021-10-28 23:36:42,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:36:42,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-28 23:36:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-28 23:36:42,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:36:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 47 transitions. [2021-10-28 23:36:42,806 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 47 transitions. Word has length 37 [2021-10-28 23:36:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:36:42,806 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 47 transitions. [2021-10-28 23:36:42,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 23:36:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 47 transitions. [2021-10-28 23:36:42,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 23:36:42,807 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:36:42,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:42,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:43,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:36:43,020 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:36:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash -449157865, now seen corresponding path program 1 times [2021-10-28 23:36:43,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:36:43,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496671275] [2021-10-28 23:36:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:43,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:36:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:36:43,023 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:36:43,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-28 23:36:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:43,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:36:43,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:43,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:36:43,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2021-10-28 23:36:43,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-10-28 23:36:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:43,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:36:44,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-10-28 23:36:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:44,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:36:44,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496671275] [2021-10-28 23:36:44,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496671275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:44,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:44,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 13 [2021-10-28 23:36:44,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599414476] [2021-10-28 23:36:44,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:36:44,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:36:44,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:36:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:36:44,786 INFO L87 Difference]: Start difference. First operand 48 states and 47 transitions. Second operand has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-28 23:36:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:45,271 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2021-10-28 23:36:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:36:45,271 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 39 [2021-10-28 23:36:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:36:45,272 INFO L225 Difference]: With dead ends: 47 [2021-10-28 23:36:45,272 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 23:36:45,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 13 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:36:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 23:36:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-28 23:36:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:36:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 46 transitions. [2021-10-28 23:36:45,275 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 46 transitions. Word has length 39 [2021-10-28 23:36:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:36:45,275 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 46 transitions. [2021-10-28 23:36:45,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-28 23:36:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 46 transitions. [2021-10-28 23:36:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 23:36:45,276 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:36:45,276 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:45,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:45,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:36:45,477 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:36:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2038394776, now seen corresponding path program 1 times [2021-10-28 23:36:45,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:36:45,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352441846] [2021-10-28 23:36:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:45,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:36:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:36:45,480 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:36:45,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-28 23:36:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 23:36:46,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:46,062 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 23:36:46,062 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-28 23:36:46,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-28 23:36:46,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-28 23:36:46,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-10-28 23:36:46,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 24 [2021-10-28 23:36:46,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 23:36:46,636 INFO L354 Elim1Store]: treesize reduction 18, result has 30.8 percent of original size [2021-10-28 23:36:46,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 35 [2021-10-28 23:36:46,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-10-28 23:36:46,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-10-28 23:36:47,000 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-28 23:36:47,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-10-28 23:36:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:47,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:36:49,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-10-28 23:36:54,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 23:37:02,000 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_114| (_ BitVec 32)) (|v_probe1_6_#in~a.offset_BEFORE_CALL_30| (_ BitVec 32)) (v_probe1_6_~a.offset_BEFORE_CALL_36 (_ BitVec 32)) (v_probe1_6_~a.base_BEFORE_CALL_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))))) (_ bv1 1)))) (exists ((|v_probe1_6_#t~ret40.base_129| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#t~ret40.base_129|)))))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv0 1)) |c_~#a6~0.base|)))))))))) (_ bv1 1)))) (not (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48)) (not (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))) (_ bv1 1))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_114|)))) (and (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48) (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv0 1)) |c_~#a6~0.base|))))))) (_ bv1 1)))))) is different from false [2021-10-28 23:37:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:04,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:37:04,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352441846] [2021-10-28 23:37:04,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352441846] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:04,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:04,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 13] imperfect sequences [] total 26 [2021-10-28 23:37:04,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101422677] [2021-10-28 23:37:04,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-28 23:37:04,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:37:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-28 23:37:04,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=542, Unknown=3, NotChecked=48, Total=702 [2021-10-28 23:37:04,162 INFO L87 Difference]: Start difference. First operand 47 states and 46 transitions. Second operand has 27 states, 24 states have (on average 2.25) internal successors, (54), 22 states have internal predecessors, (54), 8 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-10-28 23:37:41,854 WARN L207 SmtUtils]: Spent 28.95 s on a formula simplification. DAG size of input: 194 DAG size of output: 176 [2021-10-28 23:38:08,294 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#a6~0.base|) |c_~#a6~0.offset|))) (and (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse0)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| |c_~#a6~0.base|)))))) (= |c_old(#valid)| |c_#valid|) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| .cse1 (_ bv0 1)) |c_~#a6~0.base|))) (not (= |c_~#a6~0.base| .cse1)) (exists ((v_arrayElimCell_30 (_ BitVec 32))) (and (not (= |c_~#a6~0.base| v_arrayElimCell_30)) (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_30)))) (forall ((|v_ldv_malloc_#res.base_114| (_ BitVec 32)) (|v_probe1_6_#in~a.offset_BEFORE_CALL_30| (_ BitVec 32)) (v_probe1_6_~a.offset_BEFORE_CALL_36 (_ BitVec 32)) (v_probe1_6_~a.base_BEFORE_CALL_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))))) (_ bv1 1)))) (exists ((|v_probe1_6_#t~ret40.base_129| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#t~ret40.base_129|)))))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv0 1)) |c_~#a6~0.base|)))))))))) (_ bv1 1)))) (not (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48)) (not (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))) (_ bv1 1))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_114|)))) (and (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48) (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv0 1)) |c_~#a6~0.base|))))))) (_ bv1 1)))))))) is different from false [2021-10-28 23:38:10,313 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_ldv_malloc_#res.base_114| (_ BitVec 32)) (|v_probe1_6_#in~a.offset_BEFORE_CALL_30| (_ BitVec 32)) (v_probe1_6_~a.offset_BEFORE_CALL_36 (_ BitVec 32)) (v_probe1_6_~a.base_BEFORE_CALL_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))))) (_ bv1 1)))) (exists ((|v_probe1_6_#t~ret40.base_129| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#t~ret40.base_129|)))))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv0 1)) |c_~#a6~0.base|)))))))))) (_ bv1 1)))) (not (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48)) (not (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))) (_ bv1 1))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_114|)))) (and (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48) (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv0 1)) |c_~#a6~0.base|))))))) (_ bv1 1))))))) is different from false [2021-10-28 23:39:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:39:24,099 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2021-10-28 23:39:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 23:39:24,100 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.25) internal successors, (54), 22 states have internal predecessors, (54), 8 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 42 [2021-10-28 23:39:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:39:24,101 INFO L225 Difference]: With dead ends: 46 [2021-10-28 23:39:24,101 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 23:39:24,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 97.5s TimeCoverageRelationStatistics Valid=270, Invalid=1202, Unknown=22, NotChecked=228, Total=1722 [2021-10-28 23:39:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 23:39:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-28 23:39:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.0) internal successors, (30), 30 states have internal predecessors, (30), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:39:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2021-10-28 23:39:24,105 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 42 [2021-10-28 23:39:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:39:24,106 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2021-10-28 23:39:24,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.25) internal successors, (54), 22 states have internal predecessors, (54), 8 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-10-28 23:39:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2021-10-28 23:39:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 23:39:24,107 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:39:24,107 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:39:24,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-28 23:39:24,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:39:24,324 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-28 23:39:24,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:39:24,324 INFO L85 PathProgramCache]: Analyzing trace with hash 724166524, now seen corresponding path program 1 times [2021-10-28 23:39:24,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:39:24,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303015496] [2021-10-28 23:39:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:39:24,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:39:24,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:39:24,326 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:39:24,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-28 23:39:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:39:24,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 23:39:24,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:39:25,033 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 23:39:25,033 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-28 23:39:25,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-28 23:39:25,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-28 23:39:25,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-10-28 23:39:25,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 24 [2021-10-28 23:39:25,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-10-28 23:39:26,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-28 23:39:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:39:30,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:39:47,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:39:47,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303015496] [2021-10-28 23:39:47,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store |v_old(#valid)_BEFORE_CALL_20| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_prenex_1)=(= (select v_prenex_1 v_antiDerIndex_entry0_1) (select (store |v_old(#valid)_BEFORE_CALL_20| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_antiDerIndex_entry0_1))} [2021-10-28 23:39:47,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1040284763] [2021-10-28 23:39:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:39:47,836 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 23:39:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-28 23:39:47,838 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 23:39:47,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-28 23:39:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:39:48,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 23:39:48,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:39:48,828 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 23:39:48,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2021-10-28 23:39:57,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 23:40:01,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-10-28 23:40:02,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-28 23:40:02,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 24 [2021-10-28 23:40:02,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-10-28 23:40:09,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-28 23:40:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:40:13,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:40:49,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store |v_old(#valid)_BEFORE_CALL_28| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_prenex_3)=(= (select (store |v_old(#valid)_BEFORE_CALL_28| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_antiDerIndex_entry0_2) (select v_prenex_3 v_antiDerIndex_entry0_2))} [2021-10-28 23:40:49,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259499645] [2021-10-28 23:40:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:40:49,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:40:49,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:40:49,377 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:40:49,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:40:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:40:50,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 23:40:50,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:40:50,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-10-28 23:40:50,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-28 23:40:50,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 24 [2021-10-28 23:40:50,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-10-28 23:40:50,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-28 23:40:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:40:52,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:41:22,714 INFO L354 Elim1Store]: treesize reduction 16, result has 78.1 percent of original size [2021-10-28 23:41:22,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 114 [2021-10-28 23:41:23,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(not (= (store |old(#valid)| (select (select |#memory_$Pointer$.base| |~#a6~0.base|) |~#a6~0.offset|) (_ bv0 1)) v_prenex_5))=(not (= (select v_prenex_5 v_antiDerIndex_entry0_4) (select (store |old(#valid)| (select (select |#memory_$Pointer$.base| |~#a6~0.base|) |~#a6~0.offset|) (_ bv0 1)) v_antiDerIndex_entry0_4)))} [2021-10-28 23:41:23,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:41:23,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 23:41:23,266 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 23:41:23,266 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 23:41:23,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:41:23,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-28 23:41:23,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-28 23:41:23,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-28 23:41:23,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-28 23:41:23,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-28 23:41:23,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-28 23:41:23,290 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,291 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-28 23:41:23,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-28 23:41:23,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 23:41:23,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 23:41:23,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-28 23:41:23,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-28 23:41:23,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-10-28 23:41:23,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-10-28 23:41:23,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err0REQUIRES_VIOLATION [2021-10-28 23:41:23,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err1REQUIRES_VIOLATION [2021-10-28 23:41:23,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:41:23,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:23,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:23,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 23:41:23,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:23,909 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:41:23,913 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:41:23,917 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:41:23,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:41:23 BoogieIcfgContainer [2021-10-28 23:41:23,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:41:23,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:41:23,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:41:23,928 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:41:23,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:34:37" (3/4) ... [2021-10-28 23:41:23,932 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:41:23,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:41:23,933 INFO L168 Benchmark]: Toolchain (without parser) took 409004.36 ms. Allocated memory was 73.4 MB in the beginning and 119.5 MB in the end (delta: 46.1 MB). Free memory was 58.3 MB in the beginning and 67.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:41:23,934 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:41:23,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.17 ms. Allocated memory is still 73.4 MB. Free memory was 57.9 MB in the beginning and 51.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:41:23,934 INFO L168 Benchmark]: Boogie Preprocessor took 107.86 ms. Allocated memory is still 73.4 MB. Free memory was 51.4 MB in the beginning and 46.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:41:23,935 INFO L168 Benchmark]: RCFGBuilder took 1456.03 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 46.4 MB in the beginning and 70.7 MB in the end (delta: -24.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:41:23,935 INFO L168 Benchmark]: TraceAbstraction took 406598.09 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 67.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:41:23,936 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 119.5 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:41:23,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 830.17 ms. Allocated memory is still 73.4 MB. Free memory was 57.9 MB in the beginning and 51.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.86 ms. Allocated memory is still 73.4 MB. Free memory was 51.4 MB in the beginning and 46.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1456.03 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 46.4 MB in the beginning and 70.7 MB in the end (delta: -24.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 406598.09 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 70.1 MB in the beginning and 67.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.74 ms. Allocated memory is still 119.5 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; [L792] CALL entry_point() [L785] CALL, EXPR probe1_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND FALSE !(ret<0) [L774] a->p = p [L775] return 0; [L785] RET, EXPR probe1_6(&a6) [L785] int ret = probe1_6(&a6); [L786] COND TRUE ret==0 [L787] CALL disconnect_6(&a6) [L781] EXPR a->p [L781] free(a->p) [L781] free(a->p) [L781] free(a->p) [L787] RET disconnect_6(&a6) [L789] a6.p = 0 [L792] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 374 locations, 83 error locations. Started 1 CEGAR loops. OverallTime: 406.5s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 241.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 881 SDtfs, 1318 SDslu, 2749 SDs, 0 SdLazy, 2121 SolverSat, 380 SolverUnsat, 64 SolverUnknown, 0 SolverNotchecked, 140.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1108 GetRequests, 822 SyntacticMatches, 60 SemanticMatches, 226 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 118.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 80 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 58.7s InterpolantComputationTime, 570 NumberOfCodeBlocks, 570 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1058 ConstructedInterpolants, 92 QuantifiedInterpolants, 8663 SizeOfPredicates, 105 NumberOfNonLiveVariables, 2332 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:41:24,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f160542-c569-4541-9c42-6e15786634f8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...