./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF --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 a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:32:12,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:32:12,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:32:12,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:32:12,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:32:12,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:32:12,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:32:12,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:32:12,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:32:12,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:32:12,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:32:12,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:32:12,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:32:12,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:32:12,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:32:12,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:32:12,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:32:12,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:32:12,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:32:12,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:32:12,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:32:12,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:32:12,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:32:12,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:32:12,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:32:12,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:32:12,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:32:12,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:32:12,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:32:12,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:32:12,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:32:12,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:32:12,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:32:12,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:32:12,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:32:12,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:32:12,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:32:12,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:32:12,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:32:12,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:32:12,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:32:12,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:32:12,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:32:12,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:32:12,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:32:12,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:32:12,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:32:12,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:32:12,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:32:12,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:32:12,404 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:32:12,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:32:12,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:32:12,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:32:12,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:32:12,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:32:12,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:32:12,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:32:12,407 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:32:12,407 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:32:12,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:32:12,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:32:12,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:32:12,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:32:12,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:32:12,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:32:12,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:32:12,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:32:12,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:32:12,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:32:12,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:32:12,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:32:12,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:32:12,413 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_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 [2021-11-20 05:32:12,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:32:12,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:32:12,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:32:12,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:32:12,687 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:32:12,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2021-11-20 05:32:12,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/58c278b7e/c4a165e6cb184ca395e94f2fdbabbe50/FLAG86166e002 [2021-11-20 05:32:13,351 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:32:13,352 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2021-11-20 05:32:13,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/58c278b7e/c4a165e6cb184ca395e94f2fdbabbe50/FLAG86166e002 [2021-11-20 05:32:13,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/58c278b7e/c4a165e6cb184ca395e94f2fdbabbe50 [2021-11-20 05:32:13,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:32:13,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:32:13,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:13,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:32:13,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:32:13,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:13" (1/1) ... [2021-11-20 05:32:13,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed73ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:13, skipping insertion in model container [2021-11-20 05:32:13,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:13" (1/1) ... [2021-11-20 05:32:13,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:32:13,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:32:14,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:14,083 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) [2021-11-20 05:32:14,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ca189e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:14, skipping insertion in model container [2021-11-20 05:32:14,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:14,084 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:32:14,086 INFO L158 Benchmark]: Toolchain (without parser) took 475.51ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 60.5MB in the beginning and 105.9MB in the end (delta: -45.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:32:14,087 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 66.5MB in the beginning and 66.5MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:32:14,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.90ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 60.2MB in the beginning and 105.9MB in the end (delta: -45.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:32:14,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 66.5MB in the beginning and 66.5MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.90ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 60.2MB in the beginning and 105.9MB in the end (delta: -45.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF --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 a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:32:16,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:32:16,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:32:16,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:32:16,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:32:16,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:32:16,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:32:16,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:32:16,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:32:16,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:32:16,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:32:16,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:32:16,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:32:16,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:32:16,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:32:16,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:32:16,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:32:16,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:32:16,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:32:16,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:32:16,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:32:16,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:32:16,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:32:16,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:32:16,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:32:16,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:32:16,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:32:16,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:32:16,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:32:16,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:32:16,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:32:16,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:32:16,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:32:16,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:32:16,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:32:16,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:32:16,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:32:16,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:32:16,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:32:16,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:32:16,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:32:16,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:32:16,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:32:16,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:32:16,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:32:16,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:32:16,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:32:16,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:32:16,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:32:16,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:32:16,462 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:32:16,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:32:16,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:32:16,464 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:32:16,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:32:16,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:32:16,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:32:16,465 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:32:16,465 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:32:16,465 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:32:16,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:32:16,466 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:32:16,466 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:32:16,466 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:32:16,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:32:16,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:32:16,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:32:16,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:32:16,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:32:16,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:32:16,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:32:16,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:32:16,468 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:32:16,469 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:32:16,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:32:16,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:32:16,469 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_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 [2021-11-20 05:32:16,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:32:16,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:32:16,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:32:16,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:32:16,873 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:32:16,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2021-11-20 05:32:16,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/980b1b0a0/2c2136d6279d4a97a2a73b64bb3c65d8/FLAG6d017d858 [2021-11-20 05:32:17,650 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:32:17,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2021-11-20 05:32:17,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/980b1b0a0/2c2136d6279d4a97a2a73b64bb3c65d8/FLAG6d017d858 [2021-11-20 05:32:17,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/data/980b1b0a0/2c2136d6279d4a97a2a73b64bb3c65d8 [2021-11-20 05:32:17,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:32:17,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:32:17,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:17,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:32:17,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:32:17,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:17" (1/1) ... [2021-11-20 05:32:17,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd16bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:17, skipping insertion in model container [2021-11-20 05:32:17,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:17" (1/1) ... [2021-11-20 05:32:17,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:32:18,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:32:18,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:18,535 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:32:18,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:32:18,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:18,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:32:18,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:18,739 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:32:18,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18 WrapperNode [2021-11-20 05:32:18,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:18,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:18,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:32:18,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:32:18,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,795 INFO L137 Inliner]: procedures = 167, calls = 74, calls flagged for inlining = 21, calls inlined = 4, statements flattened = 23 [2021-11-20 05:32:18,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:18,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:32:18,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:32:18,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:32:18,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:32:18,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:32:18,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:32:18,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:32:18,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:32:18,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:18,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:18,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:32:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-20 05:32:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-20 05:32:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:32:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:32:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-20 05:32:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-20 05:32:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:32:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:32:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:32:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:32:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:32:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:32:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:32:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:32:18,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:32:19,046 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:32:19,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:32:19,315 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:32:19,335 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:32:19,335 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:32:19,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:19 BoogieIcfgContainer [2021-11-20 05:32:19,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:32:19,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:32:19,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:32:19,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:32:19,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:32:17" (1/3) ... [2021-11-20 05:32:19,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229bbcc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:19, skipping insertion in model container [2021-11-20 05:32:19,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18" (2/3) ... [2021-11-20 05:32:19,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229bbcc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:19, skipping insertion in model container [2021-11-20 05:32:19,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:19" (3/3) ... [2021-11-20 05:32:19,344 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test14_1.i [2021-11-20 05:32:19,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:32:19,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-20 05:32:19,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:32:19,405 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 [2021-11-20 05:32:19,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-20 05:32:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.619047619047619) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:19,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:32:19,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:19,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:19,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:19,434 INFO L85 PathProgramCache]: Analyzing trace with hash -977238692, now seen corresponding path program 1 times [2021-11-20 05:32:19,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:19,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651659465] [2021-11-20 05:32:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:19,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:19,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:19,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:19,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:32:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:19,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:32:19,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:19,677 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 [2021-11-20 05:32:19,840 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:32:19,841 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 [2021-11-20 05:32:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:19,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:20,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651659465] [2021-11-20 05:32:20,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651659465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:20,302 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:20,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-11-20 05:32:20,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189503137] [2021-11-20 05:32:20,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:20,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:32:20,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:20,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:32:20,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:20,347 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.619047619047619) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:20,556 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-11-20 05:32:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:32:20,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2021-11-20 05:32:20,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:20,568 INFO L225 Difference]: With dead ends: 40 [2021-11-20 05:32:20,571 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 05:32:20,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:20,586 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:20,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 91 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2021-11-20 05:32:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 05:32:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-11-20 05:32:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.55) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-11-20 05:32:20,631 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 12 [2021-11-20 05:32:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:20,631 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-11-20 05:32:20,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:20,632 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-11-20 05:32:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:32:20,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:20,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:20,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:20,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:20,845 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:20,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:20,848 INFO L85 PathProgramCache]: Analyzing trace with hash -977238691, now seen corresponding path program 1 times [2021-11-20 05:32:20,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:20,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911222691] [2021-11-20 05:32:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:20,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:20,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:20,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:20,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:32:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:20,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:32:20,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:20,981 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 [2021-11-20 05:32:20,988 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 [2021-11-20 05:32:23,191 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:32:23,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-20 05:32:23,208 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:32:23,209 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 23 treesize of output 23 [2021-11-20 05:32:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:23,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:29,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:29,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911222691] [2021-11-20 05:32:29,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911222691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:29,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:29,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-20 05:32:29,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135295989] [2021-11-20 05:32:29,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:29,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:32:29,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:32:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=147, Unknown=2, NotChecked=0, Total=182 [2021-11-20 05:32:29,178 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:37,898 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-11-20 05:32:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:32:37,899 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 05:32:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:37,901 INFO L225 Difference]: With dead ends: 41 [2021-11-20 05:32:37,902 INFO L226 Difference]: Without dead ends: 41 [2021-11-20 05:32:37,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=48, Invalid=186, Unknown=6, NotChecked=0, Total=240 [2021-11-20 05:32:37,904 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:37,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 110 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 156 Invalid, 0 Unknown, 68 Unchecked, 0.6s Time] [2021-11-20 05:32:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-20 05:32:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-11-20 05:32:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.5) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-20 05:32:37,913 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 12 [2021-11-20 05:32:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:37,914 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-20 05:32:37,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-20 05:32:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:32:37,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:37,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:37,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 05:32:38,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:38,127 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:38,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:38,127 INFO L85 PathProgramCache]: Analyzing trace with hash -977172480, now seen corresponding path program 1 times [2021-11-20 05:32:38,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:38,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179318614] [2021-11-20 05:32:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:38,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:38,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:38,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:32:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:38,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:32:38,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:38,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:38,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:38,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179318614] [2021-11-20 05:32:38,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179318614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:38,292 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:38,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:32:38,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631446229] [2021-11-20 05:32:38,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:38,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:32:38,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:38,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:32:38,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:38,294 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:38,326 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-11-20 05:32:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:32:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 05:32:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:38,328 INFO L225 Difference]: With dead ends: 44 [2021-11-20 05:32:38,328 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 05:32:38,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:38,330 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:38,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 143 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 05:32:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2021-11-20 05:32:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.434782608695652) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:32:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-11-20 05:32:38,338 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 12 [2021-11-20 05:32:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:38,338 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-11-20 05:32:38,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-11-20 05:32:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:32:38,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:38,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:38,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:38,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:38,559 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash 765637855, now seen corresponding path program 1 times [2021-11-20 05:32:38,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:38,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865141699] [2021-11-20 05:32:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:38,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:38,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:38,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:38,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:32:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:38,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:32:38,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:38,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:38,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865141699] [2021-11-20 05:32:38,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865141699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:38,881 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:38,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:32:38,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2949264] [2021-11-20 05:32:38,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:38,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:32:38,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:32:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:32:38,883 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:39,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:39,091 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-11-20 05:32:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:32:39,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 05:32:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:39,093 INFO L225 Difference]: With dead ends: 43 [2021-11-20 05:32:39,093 INFO L226 Difference]: Without dead ends: 40 [2021-11-20 05:32:39,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:32:39,094 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:39,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 74 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2021-11-20 05:32:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-20 05:32:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-20 05:32:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.391304347826087) internal successors, (32), 32 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:32:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-20 05:32:39,102 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 12 [2021-11-20 05:32:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:39,103 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-20 05:32:39,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:39,103 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-20 05:32:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:32:39,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:39,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:39,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-20 05:32:39,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:39,317 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:39,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1629525643, now seen corresponding path program 1 times [2021-11-20 05:32:39,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:39,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177689702] [2021-11-20 05:32:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:39,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:39,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:39,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:32:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:39,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 05:32:39,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:39,504 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 22 treesize of output 14 [2021-11-20 05:32:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:39,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:39,635 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-20 05:32:39,635 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 21 treesize of output 20 [2021-11-20 05:32:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:39,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:39,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177689702] [2021-11-20 05:32:39,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177689702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:39,684 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:39,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 8 [2021-11-20 05:32:39,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286908536] [2021-11-20 05:32:39,684 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:39,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:39,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:39,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:39,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:39,686 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:39,908 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-11-20 05:32:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:39,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-20 05:32:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:39,909 INFO L225 Difference]: With dead ends: 39 [2021-11-20 05:32:39,909 INFO L226 Difference]: Without dead ends: 39 [2021-11-20 05:32:39,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:32:39,910 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:39,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 102 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 18 Unchecked, 0.2s Time] [2021-11-20 05:32:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-20 05:32:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-20 05:32:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:32:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-11-20 05:32:39,920 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 15 [2021-11-20 05:32:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:39,920 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-11-20 05:32:39,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-11-20 05:32:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:32:39,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:39,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:39,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:40,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:40,129 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1629525642, now seen corresponding path program 1 times [2021-11-20 05:32:40,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:40,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338893888] [2021-11-20 05:32:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:40,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:40,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:40,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:40,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:32:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:40,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 05:32:40,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:40,240 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 [2021-11-20 05:32:40,249 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 [2021-11-20 05:32:40,308 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 28 treesize of output 26 [2021-11-20 05:32:40,315 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 23 treesize of output 21 [2021-11-20 05:32:42,565 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:32:42,565 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 32 treesize of output 34 [2021-11-20 05:32:42,580 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:32:42,581 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 26 treesize of output 26 [2021-11-20 05:32:42,826 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 34 treesize of output 26 [2021-11-20 05:32:42,830 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 15 [2021-11-20 05:32:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:42,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:53,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:53,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338893888] [2021-11-20 05:32:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338893888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:53,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:53,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-11-20 05:32:53,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101838373] [2021-11-20 05:32:53,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:53,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:32:53,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:32:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=329, Unknown=3, NotChecked=0, Total=380 [2021-11-20 05:32:53,668 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:54,587 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-11-20 05:32:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:32:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2021-11-20 05:32:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:54,588 INFO L225 Difference]: With dead ends: 56 [2021-11-20 05:32:54,588 INFO L226 Difference]: Without dead ends: 53 [2021-11-20 05:32:54,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=69, Invalid=434, Unknown=3, NotChecked=0, Total=506 [2021-11-20 05:32:54,590 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:54,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 146 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 110 Unchecked, 0.6s Time] [2021-11-20 05:32:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-20 05:32:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-11-20 05:32:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 37 states have internal predecessors, (43), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:32:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2021-11-20 05:32:54,597 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 15 [2021-11-20 05:32:54,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:54,598 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2021-11-20 05:32:54,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2021-11-20 05:32:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:32:54,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:54,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:54,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 05:32:54,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:54,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash 868490295, now seen corresponding path program 1 times [2021-11-20 05:32:54,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:54,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178360314] [2021-11-20 05:32:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:54,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:54,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:54,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:54,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:32:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:54,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:32:54,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:54,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:55,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:55,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178360314] [2021-11-20 05:32:55,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178360314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:55,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:55,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:32:55,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113154542] [2021-11-20 05:32:55,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:55,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:32:55,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:32:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:55,049 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:55,068 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2021-11-20 05:32:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:32:55,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 05:32:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:55,069 INFO L225 Difference]: With dead ends: 37 [2021-11-20 05:32:55,069 INFO L226 Difference]: Without dead ends: 33 [2021-11-20 05:32:55,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:55,070 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:55,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-20 05:32:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-20 05:32:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.3) internal successors, (26), 26 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2021-11-20 05:32:55,076 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 15 [2021-11-20 05:32:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:55,076 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2021-11-20 05:32:55,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2021-11-20 05:32:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:32:55,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:55,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:55,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:55,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:55,278 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:55,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1024312625, now seen corresponding path program 1 times [2021-11-20 05:32:55,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:55,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166048438] [2021-11-20 05:32:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:55,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:55,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:55,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:55,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:32:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:55,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:32:55,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:55,361 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 [2021-11-20 05:32:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:55,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:55,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:55,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166048438] [2021-11-20 05:32:55,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166048438] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:55,561 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:55,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-20 05:32:55,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189877413] [2021-11-20 05:32:55,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:55,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:32:55,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:32:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:32:55,562 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:55,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:55,806 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2021-11-20 05:32:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:32:55,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-20 05:32:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:55,809 INFO L225 Difference]: With dead ends: 31 [2021-11-20 05:32:55,809 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 05:32:55,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:32:55,810 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:55,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 62 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:32:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 05:32:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 05:32:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 24 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2021-11-20 05:32:55,814 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 16 [2021-11-20 05:32:55,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:55,815 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2021-11-20 05:32:55,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:55,816 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2021-11-20 05:32:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:32:55,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:55,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:55,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:56,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:56,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:56,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1024312626, now seen corresponding path program 1 times [2021-11-20 05:32:56,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:56,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039813969] [2021-11-20 05:32:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:56,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:56,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:56,022 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:56,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:32:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:56,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 05:32:56,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:56,116 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 [2021-11-20 05:32:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:56,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:57,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:57,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039813969] [2021-11-20 05:32:57,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039813969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:57,236 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:57,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-11-20 05:32:57,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685135807] [2021-11-20 05:32:57,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:57,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:32:57,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:32:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:32:57,238 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:57,966 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-11-20 05:32:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:57,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-20 05:32:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:57,968 INFO L225 Difference]: With dead ends: 29 [2021-11-20 05:32:57,968 INFO L226 Difference]: Without dead ends: 29 [2021-11-20 05:32:57,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-11-20 05:32:57,969 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:57,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 123 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:32:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-20 05:32:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-20 05:32:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-11-20 05:32:57,973 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 16 [2021-11-20 05:32:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:57,974 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-11-20 05:32:57,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-11-20 05:32:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:32:57,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:57,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:57,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:58,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:58,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 816922132, now seen corresponding path program 1 times [2021-11-20 05:32:58,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:58,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195156747] [2021-11-20 05:32:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:58,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:58,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:58,186 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:58,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:32:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:58,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:32:58,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:58,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:58,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:58,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195156747] [2021-11-20 05:32:58,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195156747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:58,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:58,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:32:58,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549837026] [2021-11-20 05:32:58,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:58,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:32:58,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:32:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:58,400 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:58,508 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-11-20 05:32:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:32:58,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-20 05:32:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:58,509 INFO L225 Difference]: With dead ends: 28 [2021-11-20 05:32:58,510 INFO L226 Difference]: Without dead ends: 28 [2021-11-20 05:32:58,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:32:58,511 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:58,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-20 05:32:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-20 05:32:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-11-20 05:32:58,516 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 18 [2021-11-20 05:32:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:58,517 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-11-20 05:32:58,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:32:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-11-20 05:32:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:32:58,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:58,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:58,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:58,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:32:58,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:32:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 816922133, now seen corresponding path program 1 times [2021-11-20 05:32:58,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:32:58,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971190932] [2021-11-20 05:32:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:58,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:32:58,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:32:58,722 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:32:58,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:32:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:58,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:32:58,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:58,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:59,320 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 [2021-11-20 05:32:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:59,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:32:59,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971190932] [2021-11-20 05:32:59,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971190932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:59,511 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:59,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-20 05:32:59,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799967096] [2021-11-20 05:32:59,511 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:59,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:32:59,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:32:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:32:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:32:59,513 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:59,926 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-11-20 05:32:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:32:59,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-20 05:32:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:59,928 INFO L225 Difference]: With dead ends: 27 [2021-11-20 05:32:59,928 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 05:32:59,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:32:59,929 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:59,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 142 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:32:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 05:32:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-20 05:32:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:32:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-11-20 05:32:59,934 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 18 [2021-11-20 05:32:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:59,934 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-11-20 05:32:59,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:32:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-11-20 05:32:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:32:59,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:59,936 INFO L514 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] [2021-11-20 05:32:59,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-20 05:33:00,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:33:00,148 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __ldv_list_addErr0REQUIRES_VIOLATION (and 7 more)] === [2021-11-20 05:33:00,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:00,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2055891074, now seen corresponding path program 1 times [2021-11-20 05:33:00,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:33:00,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793821243] [2021-11-20 05:33:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:00,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:33:00,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:33:00,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:33:00,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:33:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:33:00,238 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:33:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:33:00,337 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 05:33:00,338 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:33:00,339 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2021-11-20 05:33:00,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-11-20 05:33:00,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (8 of 11 remaining) [2021-11-20 05:33:00,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (7 of 11 remaining) [2021-11-20 05:33:00,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (6 of 11 remaining) [2021-11-20 05:33:00,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (5 of 11 remaining) [2021-11-20 05:33:00,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (4 of 11 remaining) [2021-11-20 05:33:00,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (3 of 11 remaining) [2021-11-20 05:33:00,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (2 of 11 remaining) [2021-11-20 05:33:00,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (1 of 11 remaining) [2021-11-20 05:33:00,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (0 of 11 remaining) [2021-11-20 05:33:00,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:00,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:33:00,545 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:00,547 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:33:00,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:33:00 BoogieIcfgContainer [2021-11-20 05:33:00,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:33:00,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:33:00,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:33:00,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:33:00,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:19" (3/4) ... [2021-11-20 05:33:00,584 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:33:00,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:33:00,585 INFO L158 Benchmark]: Toolchain (without parser) took 42649.37ms. Allocated memory was 52.4MB in the beginning and 81.8MB in the end (delta: 29.4MB). Free memory was 27.5MB in the beginning and 52.8MB in the end (delta: -25.3MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-11-20 05:33:00,585 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 52.4MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 36.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:33:00,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 786.44ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.3MB in the beginning and 41.0MB in the end (delta: -13.7MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-20 05:33:00,586 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.88ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 38.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:33:00,587 INFO L158 Benchmark]: Boogie Preprocessor took 43.24ms. Allocated memory is still 67.1MB. Free memory was 38.7MB in the beginning and 37.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:33:00,587 INFO L158 Benchmark]: RCFGBuilder took 497.01ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 40.6MB in the end (delta: -3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:33:00,587 INFO L158 Benchmark]: TraceAbstraction took 41241.13ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 40.0MB in the beginning and 53.5MB in the end (delta: -13.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:33:00,592 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 81.8MB. Free memory was 53.5MB in the beginning and 52.8MB in the end (delta: 797.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:33:00,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 52.4MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 36.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 786.44ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.3MB in the beginning and 41.0MB in the end (delta: -13.7MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.88ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 38.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.24ms. Allocated memory is still 67.1MB. Free memory was 38.7MB in the beginning and 37.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 497.01ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 40.6MB in the end (delta: -3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 41241.13ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 40.0MB in the beginning and 53.5MB in the end (delta: -13.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 81.8MB. Free memory was 53.5MB in the beginning and 52.8MB in the end (delta: 797.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 771. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L772] CALL entry_point() [L768] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; [L769] CALL alloc_14(&list_14) [L762] CALL, EXPR ldv_malloc(sizeof(struct A14)) VAL [\old(size)=12, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] RET, EXPR ldv_malloc(sizeof(struct A14)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct A14))={2:0}, list={-2147483647:0}, list={-2147483647:0}] [L762] struct A14 *p = (struct A14 *)ldv_malloc(sizeof(struct A14)); [L763] COND TRUE \read(*p) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, list={-2147483647:0}, p={2:0}] [L764] CALL ldv_list_add(&p->list, list) VAL [head={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}] [L559] EXPR head->next VAL [head={-2147483647:0}, head={-2147483647:0}, head->next={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, new={2:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [ldv_global_msg_list={1:0}, new={2:4}, next={-2147483647:0}, prev={-2147483647:0}] [L547] next->prev = new VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L548] new->next = next VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L549] new->prev = prev VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L550] prev->next = new VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [head={-2147483647:0}, head={-2147483647:0}, head->next={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, new={2:4}] [L764] RET ldv_list_add(&p->list, list) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, list={-2147483647:0}, p={2:0}] [L769] RET alloc_14(&list_14) [L768] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; VAL [ldv_global_msg_list={1:0}] [L772] RET entry_point() - 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: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 41.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 276 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 266 mSDsluCounter, 1175 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 287 IncrementalHoareTripleChecker+Unchecked, 908 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1004 IncrementalHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 267 mSDtfsCounter, 1004 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 191 SyntacticMatches, 17 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 25.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, InterpolantAutomatonStates: 85, 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, 11 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 25.5s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 300 ConstructedInterpolants, 28 QuantifiedInterpolants, 2717 SizeOfPredicates, 63 NumberOfNonLiveVariables, 898 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 [2021-11-20 05:33:00,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba16cb5-3315-4354-b15b-17b5dd3aee36/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample