./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:20:14,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:20:14,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:20:14,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:20:14,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:20:14,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:20:14,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:20:14,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:20:14,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:20:14,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:20:14,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:20:14,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:20:14,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:20:14,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:20:14,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:20:14,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:20:14,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:20:14,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:20:14,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:20:14,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:20:14,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:20:14,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:20:14,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:20:14,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:20:14,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:20:14,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:20:14,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:20:14,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:20:14,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:20:14,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:20:14,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:20:14,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:20:14,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:20:14,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:20:14,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:20:14,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:20:14,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:20:14,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:20:14,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:20:14,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:20:14,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:20:14,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:20:14,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:20:14,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:20:14,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:20:14,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:20:14,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:20:14,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:20:14,620 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:20:14,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:20:14,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:20:14,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:20:14,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:20:14,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:20:14,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:20:14,623 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:20:14,623 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:20:14,623 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:20:14,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:20:14,623 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:20:14,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:20:14,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:20:14,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:20:14,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:20:14,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:20:14,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:14,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:20:14,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:20:14,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:20:14,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:20:14,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:20:14,626 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_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-10-21 20:20:14,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:20:14,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:20:14,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:20:14,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:20:14,917 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:20:14,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-21 20:20:14,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/a23edf943/7502a04af0be47cca245b0f0cd4c70f0/FLAG510db5ffd [2021-10-21 20:20:15,560 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:20:15,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-21 20:20:15,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/a23edf943/7502a04af0be47cca245b0f0cd4c70f0/FLAG510db5ffd [2021-10-21 20:20:15,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/a23edf943/7502a04af0be47cca245b0f0cd4c70f0 [2021-10-21 20:20:15,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:20:15,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:20:15,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:15,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:20:15,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:20:15,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:15" (1/1) ... [2021-10-21 20:20:15,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655435f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:15, skipping insertion in model container [2021-10-21 20:20:15,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:15" (1/1) ... [2021-10-21 20:20:15,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:20:15,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:20:16,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:16,368 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-21 20:20:16,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e96fb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:16, skipping insertion in model container [2021-10-21 20:20:16,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:16,370 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 20:20:16,372 INFO L168 Benchmark]: Toolchain (without parser) took 504.55 ms. Allocated memory is still 113.2 MB. Free memory was 80.3 MB in the beginning and 83.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:16,372 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 113.2 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:16,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.20 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 83.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:16,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 113.2 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 498.20 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 83.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:20:18,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:20:18,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:20:18,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:20:18,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:20:18,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:20:18,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:20:18,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:20:18,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:20:18,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:20:18,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:20:18,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:20:18,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:20:18,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:20:18,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:20:18,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:20:18,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:20:18,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:20:18,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:20:18,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:20:18,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:20:18,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:20:18,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:20:18,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:20:18,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:20:18,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:20:18,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:20:18,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:20:18,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:20:18,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:20:18,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:20:18,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:20:18,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:20:18,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:20:18,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:20:18,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:20:18,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:20:18,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:20:18,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:20:18,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:20:18,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:20:18,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 20:20:18,815 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:20:18,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:20:18,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:20:18,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:20:18,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:20:18,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:20:18,818 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:20:18,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:20:18,819 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:20:18,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:20:18,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:20:18,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:20:18,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:20:18,820 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:20:18,820 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:20:18,821 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:20:18,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:20:18,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:20:18,821 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:20:18,821 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:20:18,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:20:18,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:20:18,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:20:18,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:20:18,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:20:18,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:18,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:20:18,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:20:18,823 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:20:18,823 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:20:18,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:20:18,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:20:18,824 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_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-10-21 20:20:19,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:20:19,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:20:19,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:20:19,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:20:19,241 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:20:19,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-21 20:20:19,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/1ac8b7ab3/57c4f9c6dcaa483d9190f01992c7679d/FLAGc6e75bbac [2021-10-21 20:20:19,979 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:20:19,980 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-10-21 20:20:19,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/1ac8b7ab3/57c4f9c6dcaa483d9190f01992c7679d/FLAGc6e75bbac [2021-10-21 20:20:20,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/data/1ac8b7ab3/57c4f9c6dcaa483d9190f01992c7679d [2021-10-21 20:20:20,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:20:20,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:20:20,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:20,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:20:20,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:20:20,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:20,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d04feec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20, skipping insertion in model container [2021-10-21 20:20:20,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:20,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:20:20,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:20:20,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:20,789 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 20:20:20,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:20:20,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:20,880 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:20:20,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:20,995 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:20:20,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20 WrapperNode [2021-10-21 20:20:20,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:20,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:20:20,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:20:20,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:20:21,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:20:21,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:20:21,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:20:21,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:20:21,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (1/1) ... [2021-10-21 20:20:21,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:21,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:20:21,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:20:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:20:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:20:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 20:20:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:20:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:20:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:20:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:20:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:20:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:20:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-21 20:20:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-21 20:20:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-21 20:20:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-21 20:20:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-21 20:20:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-21 20:20:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-21 20:20:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-21 20:20:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-21 20:20:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-21 20:20:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-21 20:20:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-21 20:20:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-21 20:20:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-21 20:20:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-21 20:20:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-21 20:20:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-21 20:20:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-21 20:20:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-21 20:20:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-21 20:20:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-21 20:20:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-21 20:20:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-21 20:20:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-21 20:20:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-21 20:20:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-21 20:20:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-21 20:20:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-21 20:20:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-21 20:20:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-21 20:20:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-21 20:20:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 20:20:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 20:20:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-10-21 20:20:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-10-21 20:20:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure probe1_6 [2021-10-21 20:20:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-10-21 20:20:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-21 20:20:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:20:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-21 20:20:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-21 20:20:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-21 20:20:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:20:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:20:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:20:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:20:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:20:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:20:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:20:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:20:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:20:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:20:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:20:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:20:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:20:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:20:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:20:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:20:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:20:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:20:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:20:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:20:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:20:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:20:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:20:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:20:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:20:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:20:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:20:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:20:21,256 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:20:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:20:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:20:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:20:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:20:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:20:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:20:21,258 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:20:21,258 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:20:21,258 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:20:21,258 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:20:21,258 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:20:21,258 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:20:21,259 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:20:21,259 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:20:21,259 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:20:21,259 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:20:21,259 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:20:21,260 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:20:21,260 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:20:21,260 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:20:21,261 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:20:21,261 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:20:21,261 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:20:21,261 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:20:21,261 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:20:21,262 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:20:21,262 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:20:21,262 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:20:21,262 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:20:21,262 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:20:21,262 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:20:21,263 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:20:21,263 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:20:21,263 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:20:21,263 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:20:21,264 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:20:21,264 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:20:21,264 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:20:21,264 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:20:21,265 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:20:21,265 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:20:21,265 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:20:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:20:21,266 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:20:21,268 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:20:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:20:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:20:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:20:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:20:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:20:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:20:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:20:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:20:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:20:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:20:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:20:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:20:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:20:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:20:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:20:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:20:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:20:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:20:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:20:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:20:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:20:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:20:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:20:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:20:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:20:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:20:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:20:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:20:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:20:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:20:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:20:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:20:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:20:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-21 20:20:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:20:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-21 20:20:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-21 20:20:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 20:20:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 20:20:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-21 20:20:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:20:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-21 20:20:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-21 20:20:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-21 20:20:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:20:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-21 20:20:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-21 20:20:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-21 20:20:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:20:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-21 20:20:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-21 20:20:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-21 20:20:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-21 20:20:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-21 20:20:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-21 20:20:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:20:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-21 20:20:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-21 20:20:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-21 20:20:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-21 20:20:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-21 20:20:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:20:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:20:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-21 20:20:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-21 20:20:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 20:20:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-21 20:20:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-21 20:20:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-21 20:20:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-21 20:20:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-21 20:20:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-21 20:20:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-21 20:20:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-21 20:20:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-21 20:20:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-21 20:20:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-21 20:20:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-21 20:20:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 20:20:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 20:20:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-10-21 20:20:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-10-21 20:20:21,291 INFO L130 BoogieDeclarations]: Found specification of procedure probe1_6 [2021-10-21 20:20:21,291 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-10-21 20:20:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-21 20:20:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:20:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:20:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:20:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 20:20:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:20:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:20:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-21 20:20:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-21 20:20:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-21 20:20:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-21 20:20:21,980 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 20:20:22,329 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 20:20:22,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:20:22,666 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 20:20:22,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:22 BoogieIcfgContainer [2021-10-21 20:20:22,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:20:22,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:20:22,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:20:22,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:20:22,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:20:20" (1/3) ... [2021-10-21 20:20:22,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce1a34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:22, skipping insertion in model container [2021-10-21 20:20:22,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:20" (2/3) ... [2021-10-21 20:20:22,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce1a34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:22, skipping insertion in model container [2021-10-21 20:20:22,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:22" (3/3) ... [2021-10-21 20:20:22,676 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2021-10-21 20:20:22,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:20:22,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2021-10-21 20:20:22,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:20:22,732 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:20:22,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2021-10-21 20:20:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-21 20:20:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:20:22,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:22,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:22,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1048832464, now seen corresponding path program 1 times [2021-10-21 20:20:22,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:22,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492631880] [2021-10-21 20:20:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:22,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:22,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:22,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:22,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:20:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:22,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:20:22,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:23,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:23,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:23,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492631880] [2021-10-21 20:20:23,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492631880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:23,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:23,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:20:23,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790957713] [2021-10-21 20:20:23,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:20:23,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:20:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:23,310 INFO L87 Difference]: Start difference. First operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:20:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:23,407 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-10-21 20:20:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:20:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-10-21 20:20:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:23,424 INFO L225 Difference]: With dead ends: 85 [2021-10-21 20:20:23,424 INFO L226 Difference]: Without dead ends: 82 [2021-10-21 20:20:23,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-21 20:20:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-10-21 20:20:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 49 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 20:20:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-21 20:20:23,480 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2021-10-21 20:20:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:23,481 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-21 20:20:23,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 20:20:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-21 20:20:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:20:23,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:23,483 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:23,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:23,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:23,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:23,696 INFO L82 PathProgramCache]: Analyzing trace with hash 852318959, now seen corresponding path program 1 times [2021-10-21 20:20:23,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:23,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747673146] [2021-10-21 20:20:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:23,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:23,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:23,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:20:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:23,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:20:23,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:23,962 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:20:23,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:20:24,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 20:20:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:24,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:24,308 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 10 treesize of output 8 [2021-10-21 20:20:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:24,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:24,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747673146] [2021-10-21 20:20:24,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747673146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:24,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:24,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 20:20:24,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104567617] [2021-10-21 20:20:24,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:20:24,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:24,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:20:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:24,407 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-21 20:20:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:24,598 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2021-10-21 20:20:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:20:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-10-21 20:20:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:24,602 INFO L225 Difference]: With dead ends: 108 [2021-10-21 20:20:24,602 INFO L226 Difference]: Without dead ends: 105 [2021-10-21 20:20:24,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:20:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-21 20:20:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2021-10-21 20:20:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.48) internal successors, (74), 63 states have internal predecessors, (74), 10 states have call successors, (10), 8 states have call predecessors, (10), 10 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2021-10-21 20:20:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2021-10-21 20:20:24,615 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 20 [2021-10-21 20:20:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:24,615 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2021-10-21 20:20:24,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-21 20:20:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2021-10-21 20:20:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:20:24,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:24,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:24,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:24,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:24,828 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash 852318960, now seen corresponding path program 1 times [2021-10-21 20:20:24,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:24,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103725591] [2021-10-21 20:20:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:24,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:24,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:24,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:24,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:20:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:25,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:20:25,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:25,040 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-21 20:20:25,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-21 20:20:25,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-21 20:20:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:25,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:25,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-21 20:20:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:25,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:25,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103725591] [2021-10-21 20:20:25,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103725591] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:25,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:25,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 20:20:25,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55871112] [2021-10-21 20:20:25,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:20:25,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:20:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:20:25,808 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:20:26,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:26,124 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2021-10-21 20:20:26,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:20:26,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-10-21 20:20:26,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:26,127 INFO L225 Difference]: With dead ends: 120 [2021-10-21 20:20:26,127 INFO L226 Difference]: Without dead ends: 119 [2021-10-21 20:20:26,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:20:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-21 20:20:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2021-10-21 20:20:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 80 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:20:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-10-21 20:20:26,140 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2021-10-21 20:20:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:26,140 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-10-21 20:20:26,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:20:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-10-21 20:20:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:20:26,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:26,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:26,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:26,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:26,353 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:26,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:26,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2010052609, now seen corresponding path program 1 times [2021-10-21 20:20:26,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:26,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780180282] [2021-10-21 20:20:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:26,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:26,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:26,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:20:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:26,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:20:26,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:26,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:26,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:26,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780180282] [2021-10-21 20:20:26,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780180282] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:26,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:26,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:20:26,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959708790] [2021-10-21 20:20:26,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:20:26,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:20:26,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:26,754 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:20:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:26,782 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2021-10-21 20:20:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:20:26,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-10-21 20:20:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:26,786 INFO L225 Difference]: With dead ends: 103 [2021-10-21 20:20:26,786 INFO L226 Difference]: Without dead ends: 103 [2021-10-21 20:20:26,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-21 20:20:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-21 20:20:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 79 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:20:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2021-10-21 20:20:26,797 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2021-10-21 20:20:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:26,797 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2021-10-21 20:20:26,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:20:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2021-10-21 20:20:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:20:26,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:26,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:26,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:26,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:26,999 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:26,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1260199192, now seen corresponding path program 1 times [2021-10-21 20:20:27,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:27,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791438429] [2021-10-21 20:20:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:27,000 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:27,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:27,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:27,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:20:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:27,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:20:27,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:27,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:27,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:27,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791438429] [2021-10-21 20:20:27,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791438429] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:27,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:27,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-21 20:20:27,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365923737] [2021-10-21 20:20:27,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:20:27,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:20:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:20:27,403 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:20:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:27,476 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2021-10-21 20:20:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:20:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-10-21 20:20:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:27,479 INFO L225 Difference]: With dead ends: 113 [2021-10-21 20:20:27,479 INFO L226 Difference]: Without dead ends: 109 [2021-10-21 20:20:27,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:20:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-21 20:20:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2021-10-21 20:20:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 79 states have internal predecessors, (94), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:20:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-10-21 20:20:27,489 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 22 [2021-10-21 20:20:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:27,490 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-10-21 20:20:27,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:20:27,490 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-10-21 20:20:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:20:27,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:27,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:27,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:27,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:27,704 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2112879025, now seen corresponding path program 1 times [2021-10-21 20:20:27,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:27,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675570857] [2021-10-21 20:20:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:27,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:27,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:27,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:27,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:20:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:27,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:20:27,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:28,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:28,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:28,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675570857] [2021-10-21 20:20:28,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675570857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:28,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:28,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-21 20:20:28,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580128966] [2021-10-21 20:20:28,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:20:28,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:28,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:20:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:20:28,341 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 20:20:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:28,582 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2021-10-21 20:20:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:20:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-10-21 20:20:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:28,583 INFO L225 Difference]: With dead ends: 114 [2021-10-21 20:20:28,583 INFO L226 Difference]: Without dead ends: 114 [2021-10-21 20:20:28,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:20:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-21 20:20:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-10-21 20:20:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.393939393939394) internal successors, (92), 78 states have internal predecessors, (92), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:20:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-10-21 20:20:28,596 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 23 [2021-10-21 20:20:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:28,596 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-10-21 20:20:28,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 20:20:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-10-21 20:20:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:20:28,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:28,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:28,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:28,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:28,812 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:28,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1074740801, now seen corresponding path program 1 times [2021-10-21 20:20:28,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:28,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135972649] [2021-10-21 20:20:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:28,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:28,815 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:28,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:20:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:29,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:20:29,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:29,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 20:20:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:29,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:29,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:29,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135972649] [2021-10-21 20:20:29,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135972649] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:29,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:29,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-21 20:20:29,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255237690] [2021-10-21 20:20:29,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:20:29,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:29,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:20:29,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:20:29,294 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:20:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:29,477 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2021-10-21 20:20:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:20:29,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-21 20:20:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:29,478 INFO L225 Difference]: With dead ends: 105 [2021-10-21 20:20:29,479 INFO L226 Difference]: Without dead ends: 105 [2021-10-21 20:20:29,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:20:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-21 20:20:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2021-10-21 20:20:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.378787878787879) internal successors, (91), 78 states have internal predecessors, (91), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 20:20:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-10-21 20:20:29,486 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 24 [2021-10-21 20:20:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:29,487 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-10-21 20:20:29,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:20:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-10-21 20:20:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:20:29,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:29,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:29,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:29,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:29,689 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:29,689 INFO L82 PathProgramCache]: Analyzing trace with hash 569182176, now seen corresponding path program 1 times [2021-10-21 20:20:29,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:29,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487832428] [2021-10-21 20:20:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:29,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:29,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:29,690 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:29,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:20:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:29,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:20:29,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:29,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:30,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:30,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487832428] [2021-10-21 20:20:30,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487832428] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:30,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:30,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:20:30,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722316471] [2021-10-21 20:20:30,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:20:30,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:30,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:20:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:30,113 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:20:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:30,133 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-10-21 20:20:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:20:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-21 20:20:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:30,135 INFO L225 Difference]: With dead ends: 67 [2021-10-21 20:20:30,135 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 20:20:30,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 20:20:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-21 20:20:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 47 states have internal predecessors, (50), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 20:20:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-10-21 20:20:30,139 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 24 [2021-10-21 20:20:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:30,139 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-10-21 20:20:30,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:20:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-10-21 20:20:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 20:20:30,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:30,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:30,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:30,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:30,350 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe1_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:30,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:30,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1905668747, now seen corresponding path program 1 times [2021-10-21 20:20:30,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:30,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820004426] [2021-10-21 20:20:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:30,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:30,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:30,352 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:30,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 20:20:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:30,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:20:30,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:30,633 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:20:30,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:20:30,805 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-21 20:20:30,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-21 20:20:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:30,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:31,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:31,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820004426] [2021-10-21 20:20:31,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820004426] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:31,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:31,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-10-21 20:20:31,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965037460] [2021-10-21 20:20:31,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:20:31,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:20:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:20:31,191 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 20:20:31,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:31,515 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-10-21 20:20:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:20:31,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-10-21 20:20:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:31,517 INFO L225 Difference]: With dead ends: 67 [2021-10-21 20:20:31,517 INFO L226 Difference]: Without dead ends: 67 [2021-10-21 20:20:31,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 245.3ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:20:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-21 20:20:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2021-10-21 20:20:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 20:20:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-10-21 20:20:31,522 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 28 [2021-10-21 20:20:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:31,522 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-10-21 20:20:31,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 20:20:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-10-21 20:20:31,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 20:20:31,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:31,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:31,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:31,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:31,735 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe1_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:31,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1905668746, now seen corresponding path program 1 times [2021-10-21 20:20:31,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:31,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957588885] [2021-10-21 20:20:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:31,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:31,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:31,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 20:20:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:31,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 20:20:31,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:32,003 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-21 20:20:32,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-21 20:20:36,267 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 20:20:36,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-21 20:20:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:36,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:38,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:38,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957588885] [2021-10-21 20:20:38,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957588885] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:38,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:38,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-21 20:20:38,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474973797] [2021-10-21 20:20:38,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:20:38,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:20:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-21 20:20:38,510 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 20:20:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:44,775 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-10-21 20:20:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:20:44,775 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-10-21 20:20:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:44,776 INFO L225 Difference]: With dead ends: 60 [2021-10-21 20:20:44,776 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 20:20:44,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6281.2ms TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-10-21 20:20:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 20:20:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-21 20:20:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 44 states have internal predecessors, (46), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 20:20:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-10-21 20:20:44,781 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 28 [2021-10-21 20:20:44,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:44,781 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-10-21 20:20:44,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 20:20:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-10-21 20:20:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:20:44,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:44,783 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:44,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:44,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:44,983 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:20:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:44,984 INFO L82 PathProgramCache]: Analyzing trace with hash -950633798, now seen corresponding path program 1 times [2021-10-21 20:20:44,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:44,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730715075] [2021-10-21 20:20:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:44,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:44,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:44,985 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:44,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 20:20:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:45,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:20:45,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:45,319 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:20:45,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:20:45,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 20:20:45,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-21 20:20:45,707 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-21 20:20:45,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2021-10-21 20:20:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:45,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:20:46,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-21 20:20:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:46,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:46,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730715075] [2021-10-21 20:20:46,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730715075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:46,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:46,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-21 20:20:46,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111416206] [2021-10-21 20:20:46,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:20:46,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:46,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:20:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:20:46,335 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 20:22:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:15,018 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-10-21 20:22:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:22:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-10-21 20:22:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:15,020 INFO L225 Difference]: With dead ends: 64 [2021-10-21 20:22:15,020 INFO L226 Difference]: Without dead ends: 53 [2021-10-21 20:22:15,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 10472.3ms TimeCoverageRelationStatistics Valid=96, Invalid=320, Unknown=4, NotChecked=0, Total=420 [2021-10-21 20:22:15,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-21 20:22:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-21 20:22:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 37 states have internal predecessors, (38), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:22:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-10-21 20:22:15,024 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 29 [2021-10-21 20:22:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:15,025 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-10-21 20:22:15,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 20:22:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-10-21 20:22:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 20:22:15,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:15,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:15,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:15,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:15,245 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:22:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:15,245 INFO L82 PathProgramCache]: Analyzing trace with hash 657399931, now seen corresponding path program 1 times [2021-10-21 20:22:15,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:15,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553556458] [2021-10-21 20:22:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:15,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:15,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:15,247 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:15,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 20:22:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:15,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:22:15,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:15,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:22:15,823 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-21 20:22:15,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2021-10-21 20:22:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:15,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:22:15,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553556458] [2021-10-21 20:22:15,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553556458] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:15,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:15,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-21 20:22:15,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762549209] [2021-10-21 20:22:15,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:22:15,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:22:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:22:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:22:15,901 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:22:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:16,089 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-21 20:22:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:22:16,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-10-21 20:22:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:16,091 INFO L225 Difference]: With dead ends: 52 [2021-10-21 20:22:16,091 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 20:22:16,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:22:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 20:22:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-21 20:22:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 36 states have internal predecessors, (37), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:22:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-21 20:22:16,095 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 36 [2021-10-21 20:22:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:16,095 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-21 20:22:16,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:22:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-21 20:22:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 20:22:16,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:16,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:16,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:16,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:16,304 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting disconnect_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:22:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:16,304 INFO L82 PathProgramCache]: Analyzing trace with hash 657399932, now seen corresponding path program 1 times [2021-10-21 20:22:16,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:16,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66587208] [2021-10-21 20:22:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:16,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:16,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:16,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:16,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-21 20:22:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:16,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:22:16,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:17,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:22:17,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-21 20:22:17,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:22:17,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-21 20:22:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:18,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:22:18,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66587208] [2021-10-21 20:22:18,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66587208] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:18,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:18,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-21 20:22:18,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325126480] [2021-10-21 20:22:18,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:22:18,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:22:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:22:18,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:22:18,070 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-21 20:22:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:18,568 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-10-21 20:22:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:22:18,568 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 36 [2021-10-21 20:22:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:18,569 INFO L225 Difference]: With dead ends: 51 [2021-10-21 20:22:18,569 INFO L226 Difference]: Without dead ends: 51 [2021-10-21 20:22:18,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 658.7ms TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:22:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-21 20:22:18,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-21 20:22:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 35 states have internal predecessors, (36), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:22:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-10-21 20:22:18,573 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 36 [2021-10-21 20:22:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:18,573 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-10-21 20:22:18,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-21 20:22:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-10-21 20:22:18,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:22:18,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:18,575 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:18,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:18,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:18,787 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:22:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1095438251, now seen corresponding path program 1 times [2021-10-21 20:22:18,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:18,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390980229] [2021-10-21 20:22:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:18,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:18,789 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:18,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-21 20:22:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:19,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:22:19,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:19,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-21 20:22:19,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-21 20:22:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:19,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:22:19,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-21 20:22:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:19,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:22:19,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390980229] [2021-10-21 20:22:19,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390980229] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:19,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:19,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-21 20:22:19,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600252962] [2021-10-21 20:22:19,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:22:19,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:22:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:22:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:22:19,934 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:22:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:20,361 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-10-21 20:22:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:22:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2021-10-21 20:22:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:20,363 INFO L225 Difference]: With dead ends: 50 [2021-10-21 20:22:20,363 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 20:22:20,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 296.1ms TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:22:20,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 20:22:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-21 20:22:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:22:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-21 20:22:20,365 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 37 [2021-10-21 20:22:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:20,366 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-21 20:22:20,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:22:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-21 20:22:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 20:22:20,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:20,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:20,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:20,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:20,577 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:22:20,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:20,577 INFO L82 PathProgramCache]: Analyzing trace with hash 401153019, now seen corresponding path program 1 times [2021-10-21 20:22:20,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:20,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635684364] [2021-10-21 20:22:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:20,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:20,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:20,579 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:20,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-21 20:22:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:20,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:22:20,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:21,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-21 20:22:21,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-21 20:22:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:21,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:22:22,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-21 20:22:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:22,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:22:22,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635684364] [2021-10-21 20:22:22,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635684364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:22,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:22,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 21 [2021-10-21 20:22:22,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588740450] [2021-10-21 20:22:22,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 20:22:22,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:22:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 20:22:22,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:22:22,579 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-21 20:22:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:23,933 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-21 20:22:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:22:23,934 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 38 [2021-10-21 20:22:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:23,935 INFO L225 Difference]: With dead ends: 49 [2021-10-21 20:22:23,935 INFO L226 Difference]: Without dead ends: 49 [2021-10-21 20:22:23,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1188.5ms TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-10-21 20:22:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-21 20:22:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-21 20:22:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.096774193548387) internal successors, (34), 33 states have internal predecessors, (34), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:22:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-21 20:22:23,939 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 38 [2021-10-21 20:22:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:23,939 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-21 20:22:23,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-21 20:22:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-21 20:22:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:22:23,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:23,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:23,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:24,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:24,141 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:22:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1096175518, now seen corresponding path program 1 times [2021-10-21 20:22:24,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:24,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122193523] [2021-10-21 20:22:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:24,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:24,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:24,143 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:24,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-21 20:22:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:24,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:22:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:24,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:22:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:24,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:22:24,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122193523] [2021-10-21 20:22:24,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122193523] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:24,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:24,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:22:24,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348084402] [2021-10-21 20:22:24,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:22:24,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:22:24,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:22:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:22:24,865 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-21 20:22:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:24,876 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-10-21 20:22:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:22:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2021-10-21 20:22:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:24,877 INFO L225 Difference]: With dead ends: 48 [2021-10-21 20:22:24,877 INFO L226 Difference]: Without dead ends: 48 [2021-10-21 20:22:24,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:22:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-21 20:22:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-21 20:22:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:22:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 47 transitions. [2021-10-21 20:22:24,880 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 47 transitions. Word has length 37 [2021-10-21 20:22:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:24,880 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 47 transitions. [2021-10-21 20:22:24,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-21 20:22:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 47 transitions. [2021-10-21 20:22:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 20:22:24,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:24,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:24,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:25,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:25,082 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:22:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:25,082 INFO L82 PathProgramCache]: Analyzing trace with hash -449157865, now seen corresponding path program 1 times [2021-10-21 20:22:25,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:25,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648755962] [2021-10-21 20:22:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:25,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:25,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:25,083 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:25,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-21 20:22:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:25,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:22:25,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:25,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 20:22:25,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-21 20:22:25,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-10-21 20:22:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:25,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:22:26,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-10-21 20:22:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:26,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:22:26,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648755962] [2021-10-21 20:22:26,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648755962] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:26,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:26,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 13 [2021-10-21 20:22:26,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184242000] [2021-10-21 20:22:26,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:22:26,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:22:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:22:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:22:26,675 INFO L87 Difference]: Start difference. First operand 48 states and 47 transitions. Second operand has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 20:22:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:27,219 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2021-10-21 20:22:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:22:27,219 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 39 [2021-10-21 20:22:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:27,220 INFO L225 Difference]: With dead ends: 47 [2021-10-21 20:22:27,220 INFO L226 Difference]: Without dead ends: 47 [2021-10-21 20:22:27,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 13 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 565.3ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:22:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-21 20:22:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-21 20:22:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:22:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 46 transitions. [2021-10-21 20:22:27,224 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 46 transitions. Word has length 39 [2021-10-21 20:22:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:27,224 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 46 transitions. [2021-10-21 20:22:27,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 20:22:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 46 transitions. [2021-10-21 20:22:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-21 20:22:27,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:27,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:27,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:27,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:27,426 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:22:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:27,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2038394776, now seen corresponding path program 1 times [2021-10-21 20:22:27,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:27,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071089102] [2021-10-21 20:22:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:27,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:27,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:27,428 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:27,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-21 20:22:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:28,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:22:28,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:28,090 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:22:28,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:22:28,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 20:22:28,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-21 20:22:28,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-10-21 20:22:28,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-21 20:22:28,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-21 20:22:28,775 INFO L354 Elim1Store]: treesize reduction 18, result has 30.8 percent of original size [2021-10-21 20:22:28,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 35 [2021-10-21 20:22:28,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-10-21 20:22:29,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-10-21 20:22:29,167 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-21 20:22:29,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-10-21 20:22:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:29,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:22:31,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-10-21 20:22:35,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-21 20:22:41,728 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_114| (_ BitVec 32)) (|v_probe1_6_#in~a.offset_BEFORE_CALL_30| (_ BitVec 32)) (v_probe1_6_~a.offset_BEFORE_CALL_36 (_ BitVec 32)) (v_probe1_6_~a.base_BEFORE_CALL_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))))) (_ bv1 1)))) (exists ((|v_probe1_6_#t~ret40.base_129| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#t~ret40.base_129|)))))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv0 1)) |c_~#a6~0.base|)))))))))) (_ bv1 1)))) (not (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48)) (not (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))) (_ bv1 1))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_114|)))) (and (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48) (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv0 1)) |c_~#a6~0.base|))))))) (_ bv1 1)))))) is different from false [2021-10-21 20:22:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:22:45,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:22:45,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071089102] [2021-10-21 20:22:45,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071089102] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:45,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:22:45,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 13] imperfect sequences [] total 26 [2021-10-21 20:22:45,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046855010] [2021-10-21 20:22:45,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-21 20:22:45,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:22:45,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-21 20:22:45,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=542, Unknown=3, NotChecked=48, Total=702 [2021-10-21 20:22:45,980 INFO L87 Difference]: Start difference. First operand 47 states and 46 transitions. Second operand has 27 states, 24 states have (on average 2.25) internal successors, (54), 22 states have internal predecessors, (54), 8 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-10-21 20:23:35,348 WARN L207 SmtUtils]: Spent 40.70 s on a formula simplification. DAG size of input: 194 DAG size of output: 176 [2021-10-21 20:24:00,699 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#a6~0.base|) |c_~#a6~0.offset|))) (and (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse0)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| |c_~#a6~0.base|)))))) (= |c_old(#valid)| |c_#valid|) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| .cse1 (_ bv0 1)) |c_~#a6~0.base|))) (not (= |c_~#a6~0.base| .cse1)) (exists ((v_arrayElimCell_30 (_ BitVec 32))) (and (not (= |c_~#a6~0.base| v_arrayElimCell_30)) (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_30)))) (forall ((|v_ldv_malloc_#res.base_114| (_ BitVec 32)) (|v_probe1_6_#in~a.offset_BEFORE_CALL_30| (_ BitVec 32)) (v_probe1_6_~a.offset_BEFORE_CALL_36 (_ BitVec 32)) (v_probe1_6_~a.base_BEFORE_CALL_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))))) (_ bv1 1)))) (exists ((|v_probe1_6_#t~ret40.base_129| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#t~ret40.base_129|)))))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv0 1)) |c_~#a6~0.base|)))))))))) (_ bv1 1)))) (not (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48)) (not (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))) (_ bv1 1))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_114|)))) (and (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48) (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv0 1)) |c_~#a6~0.base|))))))) (_ bv1 1)))))))) is different from false [2021-10-21 20:24:02,720 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_ldv_malloc_#res.base_114| (_ BitVec 32)) (|v_probe1_6_#in~a.offset_BEFORE_CALL_30| (_ BitVec 32)) (v_probe1_6_~a.offset_BEFORE_CALL_36 (_ BitVec 32)) (v_probe1_6_~a.base_BEFORE_CALL_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))))) (_ bv1 1)))) (exists ((|v_probe1_6_#t~ret40.base_129| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#t~ret40.base_129|)))))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv0 1)) |c_~#a6~0.base|)))))))))) (_ bv1 1)))) (not (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48)) (not (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select (store |c_old(#valid)| |v_probe1_6_#t~ret40.base_129| (_ bv1 1)) v_probe1_6_~a.base_BEFORE_CALL_48))) (_ bv1 1))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_114|)))) (and (= |c_~#a6~0.base| v_probe1_6_~a.base_BEFORE_CALL_48) (= |v_probe1_6_#in~a.offset_BEFORE_CALL_30| v_probe1_6_~a.offset_BEFORE_CALL_36) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_malloc_#res.base_114| (_ bv0 1)) |c_~#a6~0.base|))))))) (_ bv1 1))))))) is different from false [2021-10-21 20:25:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:06,550 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2021-10-21 20:25:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 20:25:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.25) internal successors, (54), 22 states have internal predecessors, (54), 8 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 42 [2021-10-21 20:25:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:06,551 INFO L225 Difference]: With dead ends: 46 [2021-10-21 20:25:06,551 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 20:25:06,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 102412.5ms TimeCoverageRelationStatistics Valid=270, Invalid=1205, Unknown=19, NotChecked=228, Total=1722 [2021-10-21 20:25:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 20:25:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-21 20:25:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.0) internal successors, (30), 30 states have internal predecessors, (30), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 20:25:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2021-10-21 20:25:06,555 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 42 [2021-10-21 20:25:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:06,555 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2021-10-21 20:25:06,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.25) internal successors, (54), 22 states have internal predecessors, (54), 8 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-10-21 20:25:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2021-10-21 20:25:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:06,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:06,557 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:06,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:06,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:25:06,757 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-21 20:25:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash 724166524, now seen corresponding path program 1 times [2021-10-21 20:25:06,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:25:06,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707192707] [2021-10-21 20:25:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:06,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:25:06,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:25:06,759 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:25:06,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-21 20:25:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:07,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:25:07,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:07,511 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:25:07,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 20:25:07,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-21 20:25:07,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-21 20:25:08,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-10-21 20:25:08,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-21 20:25:08,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-10-21 20:25:08,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-21 20:25:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:12,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:25:31,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:25:31,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707192707] [2021-10-21 20:25:31,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store |v_old(#valid)_BEFORE_CALL_20| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_prenex_1)=(= (select v_prenex_1 v_antiDerIndex_entry0_1) (select (store |v_old(#valid)_BEFORE_CALL_20| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_antiDerIndex_entry0_1))} [2021-10-21 20:25:31,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1299448294] [2021-10-21 20:25:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:31,060 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 20:25:31,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 20:25:31,062 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 20:25:31,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-21 20:25:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:31,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 20:25:31,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:31,935 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 20:25:31,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2021-10-21 20:25:38,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-21 20:25:44,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-10-21 20:25:45,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-21 20:25:45,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-21 20:25:45,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-10-21 20:25:51,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-21 20:25:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:55,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:26:26,855 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_27| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((v_probe1_6_~p~0.base_70 (_ BitVec 32))) (and (not (= (store |c_old(#valid)| v_probe1_6_~p~0.base_70 (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_27|)) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_probe1_6_~p~0.base_70))))))))) (= |v_old(#valid)_BEFORE_CALL_27| (store |c_#valid| (select (select |c_#memory_$Pointer$.base| |c_~#a6~0.base|) |c_~#a6~0.offset|) (_ bv0 1))))) is different from false [2021-10-21 20:26:26,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store |v_old(#valid)_BEFORE_CALL_28| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_prenex_3)=(= (select (store |v_old(#valid)_BEFORE_CALL_28| v_probe1_6_~p~0.base_70 (_ bv0 1)) v_antiDerIndex_entry0_2) (select v_prenex_3 v_antiDerIndex_entry0_2))} [2021-10-21 20:26:26,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742819728] [2021-10-21 20:26:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:26,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:26,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:26,947 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:26,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 20:26:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:27,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 20:26:27,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:27,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-10-21 20:26:27,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-10-21 20:26:28,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-21 20:26:28,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-10-21 20:26:28,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-21 20:26:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:30,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:06,877 INFO L354 Elim1Store]: treesize reduction 16, result has 78.1 percent of original size [2021-10-21 20:27:06,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 114 [2021-10-21 20:27:07,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(not (= (store |old(#valid)| (select (select |#memory_$Pointer$.base| |~#a6~0.base|) |~#a6~0.offset|) (_ bv0 1)) v_prenex_5))=(not (= (select v_prenex_5 v_antiDerIndex_entry0_4) (select (store |old(#valid)| (select (select |#memory_$Pointer$.base| |~#a6~0.base|) |~#a6~0.offset|) (_ bv0 1)) v_antiDerIndex_entry0_4)))} [2021-10-21 20:27:07,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:07,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 20:27:07,428 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 20:27:07,429 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 20:27:07,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:27:07,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-21 20:27:07,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-21 20:27:07,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-21 20:27:07,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-21 20:27:07,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-21 20:27:07,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-21 20:27:07,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,456 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,456 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,456 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,456 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-21 20:27:07,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-21 20:27:07,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 20:27:07,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 20:27:07,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-21 20:27:07,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-21 20:27:07,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-10-21 20:27:07,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-10-21 20:27:07,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err0REQUIRES_VIOLATION [2021-10-21 20:27:07,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err1REQUIRES_VIOLATION [2021-10-21 20:27:07,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:27:07,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:07,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:07,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:08,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:27:08,096 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:27:08,101 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 20:27:08,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:27:08 BoogieIcfgContainer [2021-10-21 20:27:08,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:27:08,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:27:08,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:27:08,115 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:27:08,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:22" (3/4) ... [2021-10-21 20:27:08,124 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:27:08,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:27:08,125 INFO L168 Benchmark]: Toolchain (without parser) took 407867.73 ms. Allocated memory was 60.8 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Free memory was 38.5 MB in the beginning and 54.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:27:08,126 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:27:08,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.10 ms. Allocated memory is still 60.8 MB. Free memory was 38.4 MB in the beginning and 26.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:27:08,126 INFO L168 Benchmark]: Boogie Preprocessor took 155.38 ms. Allocated memory is still 60.8 MB. Free memory was 26.9 MB in the beginning and 22.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:27:08,127 INFO L168 Benchmark]: RCFGBuilder took 1514.67 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 21.8 MB in the beginning and 49.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:27:08,128 INFO L168 Benchmark]: TraceAbstraction took 405443.66 ms. Allocated memory was 75.5 MB in the beginning and 104.9 MB in the end (delta: 29.4 MB). Free memory was 49.2 MB in the beginning and 55.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:27:08,128 INFO L168 Benchmark]: Witness Printer took 9.41 ms. Allocated memory is still 104.9 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:27:08,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 738.10 ms. Allocated memory is still 60.8 MB. Free memory was 38.4 MB in the beginning and 26.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 155.38 ms. Allocated memory is still 60.8 MB. Free memory was 26.9 MB in the beginning and 22.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1514.67 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 21.8 MB in the beginning and 49.6 MB in the end (delta: -27.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 405443.66 ms. Allocated memory was 75.5 MB in the beginning and 104.9 MB in the end (delta: 29.4 MB). Free memory was 49.2 MB in the beginning and 55.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. * Witness Printer took 9.41 ms. Allocated memory is still 104.9 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; [L792] CALL entry_point() [L785] CALL, EXPR probe1_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND FALSE !(ret<0) [L774] a->p = p [L775] return 0; [L785] RET, EXPR probe1_6(&a6) [L785] int ret = probe1_6(&a6); [L786] COND TRUE ret==0 [L787] CALL disconnect_6(&a6) [L781] EXPR a->p [L781] free(a->p) [L781] free(a->p) [L781] free(a->p) [L787] RET disconnect_6(&a6) [L789] a6.p = 0 [L792] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 374 locations, 83 error locations. Started 1 CEGAR loops. OverallTime: 405367.3ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 30.7ms, AutomataDifference: 240107.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 881 SDtfs, 1318 SDslu, 2751 SDs, 0 SdLazy, 2118 SolverSat, 380 SolverUnsat, 64 SolverUnknown, 0 SolverNotchecked, 134274.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1108 GetRequests, 822 SyntacticMatches, 60 SemanticMatches, 226 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 122665.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 136.0ms AutomataMinimizationTime, 18 MinimizatonAttempts, 80 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 167.2ms SsaConstructionTime, 674.6ms SatisfiabilityAnalysisTime, 34652.6ms InterpolantComputationTime, 525 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1014 ConstructedInterpolants, 82 QuantifiedInterpolants, 8008 SizeOfPredicates, 97 NumberOfNonLiveVariables, 2177 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 20:27:08,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01076901-151c-44ed-bf8e-22991e89a5a2/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...