./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL --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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:20:57,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:20:57,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:20:57,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:20:57,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:20:57,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:20:57,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:20:57,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:20:57,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:20:57,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:20:57,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:20:57,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:20:57,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:20:57,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:20:57,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:20:57,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:20:57,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:20:57,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:20:57,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:20:57,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:20:57,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:20:57,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:20:57,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:20:57,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:20:57,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:20:57,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:20:57,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:20:57,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:20:57,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:20:57,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:20:57,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:20:57,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:20:57,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:20:57,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:20:57,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:20:57,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:20:57,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:20:57,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:20:57,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:20:57,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:20:57,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:20:57,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:20:57,763 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:20:57,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:20:57,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:20:57,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:20:57,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:20:57,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:20:57,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:20:57,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:20:57,767 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:20:57,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:20:57,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:20:57,768 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:20:57,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:20:57,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:20:57,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:20:57,770 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:20:57,770 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:20:57,770 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:20:57,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:20:57,771 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:20:57,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:20:57,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:20:57,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:20:57,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:20:57,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:20:57,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:20:57,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:20:57,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:20:57,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:20:57,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:20:57,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:20:57,775 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_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-11-19 05:20:58,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:20:58,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:20:58,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:20:58,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:20:58,226 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:20:58,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-19 05:20:58,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/8b6d50291/27b5b734ed76492ab44ddc38405edfc7/FLAG848929738 [2021-11-19 05:20:58,982 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:20:58,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-19 05:20:59,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/8b6d50291/27b5b734ed76492ab44ddc38405edfc7/FLAG848929738 [2021-11-19 05:20:59,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/8b6d50291/27b5b734ed76492ab44ddc38405edfc7 [2021-11-19 05:20:59,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:20:59,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:20:59,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:20:59,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:20:59,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:20:59,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:59" (1/1) ... [2021-11-19 05:20:59,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85539df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:59, skipping insertion in model container [2021-11-19 05:20:59,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:59" (1/1) ... [2021-11-19 05:20:59,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:20:59,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:20:59,895 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:20:59,925 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 05:20:59,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bbb3f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:59, skipping insertion in model container [2021-11-19 05:20:59,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:20:59,928 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 05:20:59,933 INFO L158 Benchmark]: Toolchain (without parser) took 704.18ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 50.1MB in the beginning and 87.3MB in the end (delta: -37.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:20:59,934 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 88.1MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:20:59,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.85ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 49.9MB in the beginning and 87.3MB in the end (delta: -37.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:20:59,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 88.1MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.85ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 49.9MB in the beginning and 87.3MB in the end (delta: -37.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL --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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:21:02,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:21:02,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:21:02,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:21:02,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:21:02,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:21:02,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:21:02,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:21:02,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:21:02,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:21:02,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:21:02,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:21:02,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:21:02,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:21:02,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:21:02,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:21:02,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:21:02,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:21:02,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:21:02,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:21:02,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:21:02,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:21:02,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:21:02,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:21:02,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:21:03,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:21:03,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:21:03,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:21:03,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:21:03,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:21:03,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:21:03,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:21:03,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:21:03,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:21:03,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:21:03,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:21:03,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:21:03,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:21:03,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:21:03,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:21:03,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:21:03,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:21:03,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:21:03,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:21:03,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:21:03,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:21:03,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:21:03,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:21:03,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:21:03,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:21:03,094 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:21:03,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:21:03,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:21:03,096 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:21:03,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:21:03,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:21:03,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:21:03,098 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:21:03,098 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:21:03,098 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:21:03,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:21:03,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:21:03,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:21:03,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:21:03,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:21:03,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:21:03,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:21:03,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:21:03,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:21:03,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:21:03,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:21:03,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:21:03,102 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:21:03,103 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:21:03,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:21:03,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:21:03,104 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_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-11-19 05:21:03,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:21:03,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:21:03,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:21:03,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:21:03,653 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:21:03,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-19 05:21:03,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/f64063dfa/8f1909d9a74545ffb0d502771d5e9751/FLAG20089b4b9 [2021-11-19 05:21:04,623 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:21:04,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-19 05:21:04,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/f64063dfa/8f1909d9a74545ffb0d502771d5e9751/FLAG20089b4b9 [2021-11-19 05:21:04,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/data/f64063dfa/8f1909d9a74545ffb0d502771d5e9751 [2021-11-19 05:21:04,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:21:04,802 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:21:04,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:21:04,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:21:04,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:21:04,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:04" (1/1) ... [2021-11-19 05:21:04,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783cc829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:04, skipping insertion in model container [2021-11-19 05:21:04,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:04" (1/1) ... [2021-11-19 05:21:04,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:21:04,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:21:05,429 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:21:05,454 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 05:21:05,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:21:05,541 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:21:05,564 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:21:05,656 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:21:05,728 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:21:05,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05 WrapperNode [2021-11-19 05:21:05,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:21:05,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:21:05,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:21:05,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:21:05,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:21:05,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:21:05,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:21:05,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:21:05,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (1/1) ... [2021-11-19 05:21:05,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:21:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:21:05,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:21:05,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:21:06,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:21:06,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:21:06,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 05:21:06,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:21:06,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:21:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:21:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:21:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:21:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:21:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-11-19 05:21:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-11-19 05:21:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 05:21:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 05:21:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-19 05:21:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-19 05:21:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-11-19 05:21:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-19 05:21:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-11-19 05:21:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-19 05:21:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-11-19 05:21:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-11-19 05:21:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-11-19 05:21:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-11-19 05:21:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-11-19 05:21:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-19 05:21:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 05:21:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-11-19 05:21:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-11-19 05:21:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-11-19 05:21:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-11-19 05:21:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-11-19 05:21:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-11-19 05:21:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-11-19 05:21:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-11-19 05:21:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-11-19 05:21:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-11-19 05:21:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-11-19 05:21:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-11-19 05:21:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-11-19 05:21:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-11-19 05:21:06,026 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-19 05:21:06,026 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-19 05:21:06,027 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-11-19 05:21:06,027 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-11-19 05:21:06,027 INFO L138 BoogieDeclarations]: Found implementation of procedure probe1_6 [2021-11-19 05:21:06,028 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-11-19 05:21:06,028 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-11-19 05:21:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:21:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 05:21:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 05:21:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 05:21:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:21:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:21:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:21:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:21:06,030 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:21:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:21:06,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:21:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:21:06,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:21:06,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:21:06,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:21:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:21:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:21:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:21:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:21:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:21:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:21:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:21:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:21:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:21:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:21:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:21:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:21:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:21:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:21:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:21:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:21:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:21:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:21:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:21:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:21:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:21:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:21:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:21:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:21:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:21:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:21:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:21:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:21:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:21:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:21:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:21:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:21:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:21:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:21:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:21:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:21:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:21:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:21:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:21:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:21:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:21:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:21:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:21:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:21:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:21:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:21:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:21:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:21:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:21:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:21:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:21:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:21:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:21:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:21:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:21:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:21:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:21:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:21:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:21:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:21:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:21:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:21:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:21:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:21:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:21:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:21:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:21:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:21:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:21:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:21:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:21:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:21:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:21:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:21:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:21:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:21:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:21:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:21:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:21:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:21:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:21:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:21:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:21:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:21:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:21:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:21:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:21:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:21:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:21:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:21:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:21:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:21:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:21:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:21:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:21:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:21:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 05:21:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:21:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-11-19 05:21:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-11-19 05:21:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 05:21:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 05:21:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 05:21:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:21:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 05:21:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 05:21:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-19 05:21:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:21:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-19 05:21:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-11-19 05:21:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-19 05:21:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:21:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-11-19 05:21:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-19 05:21:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-11-19 05:21:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-11-19 05:21:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 05:21:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-11-19 05:21:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:21:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-11-19 05:21:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-11-19 05:21:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-19 05:21:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 05:21:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-11-19 05:21:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:21:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:21:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-11-19 05:21:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-11-19 05:21:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 05:21:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-11-19 05:21:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-11-19 05:21:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-11-19 05:21:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-11-19 05:21:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-11-19 05:21:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-11-19 05:21:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-11-19 05:21:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-11-19 05:21:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-11-19 05:21:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-11-19 05:21:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-11-19 05:21:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 05:21:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-19 05:21:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-19 05:21:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-11-19 05:21:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-11-19 05:21:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure probe1_6 [2021-11-19 05:21:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-11-19 05:21:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-11-19 05:21:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:21:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 05:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 05:21:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 05:21:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 05:21:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 05:21:06,530 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:21:06,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:21:06,862 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:21:07,405 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:21:07,926 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:21:07,953 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:21:07,955 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:21:07,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:07 BoogieIcfgContainer [2021-11-19 05:21:07,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:21:07,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:21:07,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:21:07,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:21:07,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:04" (1/3) ... [2021-11-19 05:21:07,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba4ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:07, skipping insertion in model container [2021-11-19 05:21:07,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:05" (2/3) ... [2021-11-19 05:21:07,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba4ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:07, skipping insertion in model container [2021-11-19 05:21:07,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:07" (3/3) ... [2021-11-19 05:21:07,976 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-2.i [2021-11-19 05:21:07,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:21:07,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 81 error locations. [2021-11-19 05:21:08,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:21:08,078 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:21:08,078 INFO L340 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2021-11-19 05:21:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 104 states have internal predecessors, (113), 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) [2021-11-19 05:21:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 05:21:08,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:08,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:08,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:08,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash -667181762, now seen corresponding path program 1 times [2021-11-19 05:21:08,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:08,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771732567] [2021-11-19 05:21:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:08,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:08,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:08,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:21:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:08,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:21:08,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:08,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:08,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:08,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771732567] [2021-11-19 05:21:08,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771732567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:08,856 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:08,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 05:21:08,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260778015] [2021-11-19 05:21:08,860 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:08,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:21:08,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:21:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:08,912 INFO L87 Difference]: Start difference. First operand has 133 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 104 states have internal predecessors, (113), 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 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:21:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:09,045 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-11-19 05:21:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:21:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-11-19 05:21:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:09,063 INFO L225 Difference]: With dead ends: 84 [2021-11-19 05:21:09,063 INFO L226 Difference]: Without dead ends: 81 [2021-11-19 05:21:09,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:09,082 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 18 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:09,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 271 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:21:09,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-19 05:21:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2021-11-19 05:21:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 48 states have internal predecessors, (52), 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) [2021-11-19 05:21:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-11-19 05:21:09,163 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 23 [2021-11-19 05:21:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:09,164 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-11-19 05:21:09,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:21:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-11-19 05:21:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 05:21:09,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:09,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:09,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:09,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:09,381 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1260306412, now seen corresponding path program 1 times [2021-11-19 05:21:09,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:09,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83867678] [2021-11-19 05:21:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:09,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:09,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:09,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:09,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:21:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:09,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:21:09,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:09,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:09,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:09,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83867678] [2021-11-19 05:21:09,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83867678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:09,827 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:09,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:21:09,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304978326] [2021-11-19 05:21:09,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:09,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:21:09,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:21:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:09,833 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-19 05:21:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:09,876 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2021-11-19 05:21:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:21:09,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 23 [2021-11-19 05:21:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:09,885 INFO L225 Difference]: With dead ends: 63 [2021-11-19 05:21:09,885 INFO L226 Difference]: Without dead ends: 63 [2021-11-19 05:21:09,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:09,893 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 15 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:09,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 212 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:09,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-19 05:21:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-19 05:21:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 47 states have internal predecessors, (51), 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) [2021-11-19 05:21:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-11-19 05:21:09,921 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 23 [2021-11-19 05:21:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:09,922 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-11-19 05:21:09,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-19 05:21:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-11-19 05:21:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 05:21:09,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:09,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:09,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:10,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:10,148 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash -538099043, now seen corresponding path program 1 times [2021-11-19 05:21:10,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:10,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571611455] [2021-11-19 05:21:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:10,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:10,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:10,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:10,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:21:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:10,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:21:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:10,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:10,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:10,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571611455] [2021-11-19 05:21:10,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571611455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:10,661 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:10,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 05:21:10,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833922161] [2021-11-19 05:21:10,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:10,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:21:10,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:10,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:21:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:21:10,669 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-19 05:21:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:10,781 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2021-11-19 05:21:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:21:10,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 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 23 [2021-11-19 05:21:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:10,786 INFO L225 Difference]: With dead ends: 77 [2021-11-19 05:21:10,787 INFO L226 Difference]: Without dead ends: 77 [2021-11-19 05:21:10,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:21:10,797 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 18 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:10,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 386 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:21:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-19 05:21:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2021-11-19 05:21:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.35) internal successors, (54), 50 states have internal predecessors, (54), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-19 05:21:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-19 05:21:10,820 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 23 [2021-11-19 05:21:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:10,821 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-19 05:21:10,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-19 05:21:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-19 05:21:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:21:10,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:10,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:10,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:11,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:11,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash -414792645, now seen corresponding path program 1 times [2021-11-19 05:21:11,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:11,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26038580] [2021-11-19 05:21:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:11,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:11,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:11,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:11,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:21:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:11,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:21:11,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:11,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:11,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:11,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26038580] [2021-11-19 05:21:11,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26038580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:11,895 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:11,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-11-19 05:21:11,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991543998] [2021-11-19 05:21:11,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:11,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:21:11,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:21:11,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:21:11,897 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-19 05:21:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:12,268 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-11-19 05:21:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:21:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 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 24 [2021-11-19 05:21:12,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:12,270 INFO L225 Difference]: With dead ends: 86 [2021-11-19 05:21:12,270 INFO L226 Difference]: Without dead ends: 86 [2021-11-19 05:21:12,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:21:12,272 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 62 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:12,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 324 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 173 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2021-11-19 05:21:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-19 05:21:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2021-11-19 05:21:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 40 states have (on average 1.325) internal successors, (53), 49 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-19 05:21:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-11-19 05:21:12,282 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 24 [2021-11-19 05:21:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:12,283 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-11-19 05:21:12,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-19 05:21:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-11-19 05:21:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 05:21:12,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:12,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:12,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 05:21:12,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:12,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 26330358, now seen corresponding path program 1 times [2021-11-19 05:21:12,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:12,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708534645] [2021-11-19 05:21:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:12,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:12,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:12,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:21:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:12,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:21:12,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:12,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:21:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:12,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:12,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:12,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708534645] [2021-11-19 05:21:12,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708534645] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:12,970 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:12,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-11-19 05:21:12,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761799778] [2021-11-19 05:21:12,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:12,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:21:12,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:12,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:21:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:21:12,973 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-19 05:21:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:13,113 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2021-11-19 05:21:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:21:13,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 25 [2021-11-19 05:21:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:13,116 INFO L225 Difference]: With dead ends: 84 [2021-11-19 05:21:13,116 INFO L226 Difference]: Without dead ends: 84 [2021-11-19 05:21:13,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:21:13,117 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 15 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:13,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 251 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2021-11-19 05:21:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-19 05:21:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2021-11-19 05:21:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 58 states have internal predecessors, (64), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2021-11-19 05:21:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-11-19 05:21:13,132 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 25 [2021-11-19 05:21:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:13,133 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-11-19 05:21:13,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-19 05:21:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-11-19 05:21:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:21:13,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:13,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:13,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 05:21:13,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:13,352 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:13,353 INFO L85 PathProgramCache]: Analyzing trace with hash 498121534, now seen corresponding path program 1 times [2021-11-19 05:21:13,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:13,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005642307] [2021-11-19 05:21:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:13,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:13,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:13,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:13,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:21:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:13,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:21:13,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:13,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:21:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:17,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:28,782 INFO L354 Elim1Store]: treesize reduction 16, result has 78.1 percent of original size [2021-11-19 05:21:28,783 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 60 treesize of output 107 [2021-11-19 05:21:29,542 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:21:29,542 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 24 treesize of output 28 [2021-11-19 05:21:29,722 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1))) (|v_entry_point_~#a7~0.base_16| (_ BitVec 32))) (or (= (store |c_#valid| |v_entry_point_~#a7~0.base_16| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_4|) (exists ((|v_entry_point_~#a7~0.base_13| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_entry_point_~#a7~0.base_13|))) (not (= |v_old(#valid)_BEFORE_CALL_4| (store |c_old(#valid)| |v_entry_point_~#a7~0.base_13| (_ bv0 1)))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_entry_point_~#a7~0.base_16|))))))) is different from false [2021-11-19 05:21:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:29,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:29,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005642307] [2021-11-19 05:21:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005642307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:29,748 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-19 05:21:29,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299260718] [2021-11-19 05:21:29,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:21:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:21:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=63, Unknown=15, NotChecked=18, Total=132 [2021-11-19 05:21:29,750 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-19 05:21:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:29,792 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2021-11-19 05:21:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:21:29,793 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 24 [2021-11-19 05:21:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:29,795 INFO L225 Difference]: With dead ends: 90 [2021-11-19 05:21:29,796 INFO L226 Difference]: Without dead ends: 71 [2021-11-19 05:21:29,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=36, Invalid=63, Unknown=15, NotChecked=18, Total=132 [2021-11-19 05:21:29,798 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 3 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:29,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 217 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 89 Unchecked, 0.0s Time] [2021-11-19 05:21:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-19 05:21:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-19 05:21:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 51 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-19 05:21:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2021-11-19 05:21:29,818 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 24 [2021-11-19 05:21:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:29,820 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2021-11-19 05:21:29,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-19 05:21:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2021-11-19 05:21:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 05:21:29,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:29,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:29,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:30,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:30,045 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 77 more)] === [2021-11-19 05:21:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash -479228267, now seen corresponding path program 1 times [2021-11-19 05:21:30,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:30,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905254025] [2021-11-19 05:21:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:30,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:30,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:30,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:30,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:21:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:30,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:21:30,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:30,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:30,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:30,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905254025] [2021-11-19 05:21:30,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905254025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:30,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:30,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 05:21:30,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380683913] [2021-11-19 05:21:30,477 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:30,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:21:30,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:21:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:30,478 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-19 05:21:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:30,500 INFO L93 Difference]: Finished difference Result 58 states and 57 transitions. [2021-11-19 05:21:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:21:30,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 25 [2021-11-19 05:21:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:30,503 INFO L225 Difference]: With dead ends: 58 [2021-11-19 05:21:30,503 INFO L226 Difference]: Without dead ends: 54 [2021-11-19 05:21:30,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:21:30,504 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:30,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:21:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-19 05:21:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-19 05:21:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 38 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) [2021-11-19 05:21:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2021-11-19 05:21:30,510 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 25 [2021-11-19 05:21:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:30,511 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2021-11-19 05:21:30,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-19 05:21:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2021-11-19 05:21:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 05:21:30,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:30,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:30,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:30,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:30,713 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe1_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash 720529802, now seen corresponding path program 1 times [2021-11-19 05:21:30,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:30,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971616281] [2021-11-19 05:21:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:30,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:30,715 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:30,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:21:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:30,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:21:30,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:30,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:21:31,021 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 05:21:31,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-19 05:21:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:31,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:31,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:31,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971616281] [2021-11-19 05:21:31,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971616281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:31,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:31,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-11-19 05:21:31,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980019033] [2021-11-19 05:21:31,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:31,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:21:31,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:31,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:21:31,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:21:31,449 INFO L87 Difference]: Start difference. First operand 54 states and 53 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 05:21:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:31,647 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2021-11-19 05:21:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:21:31,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 29 [2021-11-19 05:21:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:31,648 INFO L225 Difference]: With dead ends: 53 [2021-11-19 05:21:31,648 INFO L226 Difference]: Without dead ends: 53 [2021-11-19 05:21:31,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:21:31,649 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:31,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 143 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-11-19 05:21:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-19 05:21:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-19 05:21:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 37 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) [2021-11-19 05:21:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 52 transitions. [2021-11-19 05:21:31,653 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 52 transitions. Word has length 29 [2021-11-19 05:21:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:31,654 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 52 transitions. [2021-11-19 05:21:31,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 05:21:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 52 transitions. [2021-11-19 05:21:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 05:21:31,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:31,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:31,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:31,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:31,856 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe1_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash 720529803, now seen corresponding path program 1 times [2021-11-19 05:21:31,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:31,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090494917] [2021-11-19 05:21:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:31,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:31,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:31,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:31,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:21:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:32,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 05:21:32,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:32,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:21:36,262 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:21:36,262 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 [2021-11-19 05:21:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:36,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:38,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:38,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090494917] [2021-11-19 05:21:38,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090494917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:38,600 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:38,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-11-19 05:21:38,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667163642] [2021-11-19 05:21:38,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:38,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:21:38,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:21:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-11-19 05:21:38,602 INFO L87 Difference]: Start difference. First operand 53 states and 52 transitions. Second operand has 15 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 05:21:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:38,803 INFO L93 Difference]: Finished difference Result 52 states and 51 transitions. [2021-11-19 05:21:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:21:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 29 [2021-11-19 05:21:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:38,805 INFO L225 Difference]: With dead ends: 52 [2021-11-19 05:21:38,805 INFO L226 Difference]: Without dead ends: 52 [2021-11-19 05:21:38,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2021-11-19 05:21:38,806 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 25 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:38,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 229 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2021-11-19 05:21:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-19 05:21:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-19 05:21:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 36 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) [2021-11-19 05:21:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 51 transitions. [2021-11-19 05:21:38,811 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 51 transitions. Word has length 29 [2021-11-19 05:21:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:38,811 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 51 transitions. [2021-11-19 05:21:38,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 05:21:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 51 transitions. [2021-11-19 05:21:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 05:21:38,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:38,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:38,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:39,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,026 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -91545904, now seen corresponding path program 1 times [2021-11-19 05:21:39,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:39,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853790466] [2021-11-19 05:21:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:39,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:39,028 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:39,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:21:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:39,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:21:39,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:39,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:39,457 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:21:39,458 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 [2021-11-19 05:21:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:39,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:39,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853790466] [2021-11-19 05:21:39,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853790466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:39,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:39,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 05:21:39,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677023284] [2021-11-19 05:21:39,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:39,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:21:39,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:21:39,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:21:39,558 INFO L87 Difference]: Start difference. First operand 52 states and 51 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-11-19 05:21:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:39,716 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2021-11-19 05:21:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:21:39,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 37 [2021-11-19 05:21:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:39,718 INFO L225 Difference]: With dead ends: 51 [2021-11-19 05:21:39,718 INFO L226 Difference]: Without dead ends: 51 [2021-11-19 05:21:39,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:21:39,720 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 19 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:39,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 192 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:21:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-19 05:21:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-19 05:21:39,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 35 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) [2021-11-19 05:21:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 50 transitions. [2021-11-19 05:21:39,725 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 50 transitions. Word has length 37 [2021-11-19 05:21:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:39,725 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 50 transitions. [2021-11-19 05:21:39,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-11-19 05:21:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 50 transitions. [2021-11-19 05:21:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 05:21:39,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:39,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:39,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:39,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,948 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting disconnect_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:39,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash -91545903, now seen corresponding path program 1 times [2021-11-19 05:21:39,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:39,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157491321] [2021-11-19 05:21:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:39,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:39,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:39,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:39,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:21:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:40,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 05:21:40,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:40,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:40,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 05:21:41,172 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:21:41,172 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 [2021-11-19 05:21:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:41,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:41,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157491321] [2021-11-19 05:21:41,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157491321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:41,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:41,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-19 05:21:41,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710208440] [2021-11-19 05:21:41,739 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:41,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:21:41,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:21:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:21:41,744 INFO L87 Difference]: Start difference. First operand 51 states and 50 transitions. Second operand has 14 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 05:21:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:42,182 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2021-11-19 05:21:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:21:42,183 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 37 [2021-11-19 05:21:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:42,184 INFO L225 Difference]: With dead ends: 50 [2021-11-19 05:21:42,184 INFO L226 Difference]: Without dead ends: 50 [2021-11-19 05:21:42,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:21:42,186 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 37 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:42,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 263 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:21:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-19 05:21:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-19 05:21:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.096774193548387) internal successors, (34), 34 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) [2021-11-19 05:21:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2021-11-19 05:21:42,191 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 37 [2021-11-19 05:21:42,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:42,192 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2021-11-19 05:21:42,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 05:21:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2021-11-19 05:21:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:21:42,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:42,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:42,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:42,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:42,407 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:42,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1457044639, now seen corresponding path program 1 times [2021-11-19 05:21:42,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:42,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171310634] [2021-11-19 05:21:42,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:42,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:42,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:42,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:42,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 05:21:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:42,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 05:21:42,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:42,869 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 [2021-11-19 05:21:43,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 05:21:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:43,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:43,231 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 [2021-11-19 05:21:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:43,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:43,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171310634] [2021-11-19 05:21:43,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171310634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:43,475 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:43,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-19 05:21:43,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656453753] [2021-11-19 05:21:43,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:43,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:21:43,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:21:43,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:21:43,478 INFO L87 Difference]: Start difference. First operand 50 states and 49 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-11-19 05:21:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:43,708 INFO L93 Difference]: Finished difference Result 49 states and 48 transitions. [2021-11-19 05:21:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:21:43,709 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 38 [2021-11-19 05:21:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:43,710 INFO L225 Difference]: With dead ends: 49 [2021-11-19 05:21:43,710 INFO L226 Difference]: Without dead ends: 49 [2021-11-19 05:21:43,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:21:43,711 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:43,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 301 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:21:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-19 05:21:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-19 05:21:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 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) [2021-11-19 05:21:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 48 transitions. [2021-11-19 05:21:43,716 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 48 transitions. Word has length 38 [2021-11-19 05:21:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:43,716 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 48 transitions. [2021-11-19 05:21:43,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-11-19 05:21:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 48 transitions. [2021-11-19 05:21:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:21:43,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:43,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:43,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:43,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:43,927 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2076256016, now seen corresponding path program 1 times [2021-11-19 05:21:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:43,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231371092] [2021-11-19 05:21:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:43,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:43,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:43,930 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:43,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 05:21:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:44,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:21:44,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:44,753 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 [2021-11-19 05:21:45,011 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 [2021-11-19 05:21:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:45,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:45,486 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 [2021-11-19 05:21:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:46,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:46,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231371092] [2021-11-19 05:21:46,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231371092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:46,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:46,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 21 [2021-11-19 05:21:46,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8327465] [2021-11-19 05:21:46,192 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:46,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 05:21:46,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 05:21:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:21:46,193 INFO L87 Difference]: Start difference. First operand 49 states and 48 transitions. Second operand has 22 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-19 05:21:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:46,876 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-11-19 05:21:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:21:46,877 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 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 39 [2021-11-19 05:21:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:46,878 INFO L225 Difference]: With dead ends: 48 [2021-11-19 05:21:46,878 INFO L226 Difference]: Without dead ends: 48 [2021-11-19 05:21:46,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:21:46,881 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 58 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:46,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 237 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 48 Unchecked, 0.5s Time] [2021-11-19 05:21:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-19 05:21:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-19 05:21:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.032258064516129) 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) [2021-11-19 05:21:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 47 transitions. [2021-11-19 05:21:46,886 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 47 transitions. Word has length 39 [2021-11-19 05:21:46,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:46,887 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 47 transitions. [2021-11-19 05:21:46,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-19 05:21:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 47 transitions. [2021-11-19 05:21:46,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:21:46,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:46,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:46,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:47,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:47,095 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash 60573377, now seen corresponding path program 1 times [2021-11-19 05:21:47,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:47,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328444880] [2021-11-19 05:21:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:47,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:47,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:47,097 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:47,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 05:21:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:47,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:21:47,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:47,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:21:47,634 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 22 treesize of output 18 [2021-11-19 05:21:47,760 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 [2021-11-19 05:21:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:47,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:21:48,064 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 48 treesize of output 44 [2021-11-19 05:21:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:21:48,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:21:48,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328444880] [2021-11-19 05:21:48,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328444880] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:21:48,610 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:21:48,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 13 [2021-11-19 05:21:48,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898237677] [2021-11-19 05:21:48,611 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:21:48,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:21:48,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:21:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:21:48,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:21:48,612 INFO L87 Difference]: Start difference. First operand 48 states and 47 transitions. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-11-19 05:21:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:21:48,943 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2021-11-19 05:21:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:21:48,943 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 40 [2021-11-19 05:21:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:21:48,944 INFO L225 Difference]: With dead ends: 47 [2021-11-19 05:21:48,944 INFO L226 Difference]: Without dead ends: 47 [2021-11-19 05:21:48,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:21:48,945 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 26 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:21:48,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 238 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2021-11-19 05:21:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-19 05:21:48,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-19 05:21:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.0) 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) [2021-11-19 05:21:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 46 transitions. [2021-11-19 05:21:48,949 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 46 transitions. Word has length 40 [2021-11-19 05:21:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:21:48,949 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 46 transitions. [2021-11-19 05:21:48,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-11-19 05:21:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 46 transitions. [2021-11-19 05:21:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 05:21:48,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:21:48,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:21:48,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 05:21:49,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:21:49,155 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-19 05:21:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:21:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1241521659, now seen corresponding path program 1 times [2021-11-19 05:21:49,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:21:49,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544662561] [2021-11-19 05:21:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:21:49,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:21:49,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:21:49,159 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:21:49,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 05:21:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:21:49,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 05:21:49,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:21:49,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:21:49,687 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 20 treesize of output 17 [2021-11-19 05:21:49,823 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 [2021-11-19 05:21:49,943 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 [2021-11-19 05:21:50,116 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:21:50,117 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 32 treesize of output 24 [2021-11-19 05:22:04,405 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:22:04,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 39 [2021-11-19 05:22:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:22:18,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:22:21,357 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_12| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_12| |c_#valid|) (exists ((v_probe1_6_~p~0.base_54 (_ BitVec 32)) (|v_entry_point_~#a7~0.base_33| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_entry_point_~#a7~0.base_33| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_entry_point_~#a7~0.base_33|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 v_probe1_6_~p~0.base_54))))) (not (= (store (store .cse0 v_probe1_6_~p~0.base_54 (_ bv0 1)) |v_entry_point_~#a7~0.base_33| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_12|))))))) is different from false [2021-11-19 05:22:24,669 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_12| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_12| (store (store |c_#valid| (select (select |c_#memory_$Pointer$.base| |c_entry_point_~#a7~0.base|) |c_entry_point_~#a7~0.offset|) (_ bv0 1)) |c_entry_point_~#a7~0.base| (_ bv0 1))) (exists ((v_probe1_6_~p~0.base_54 (_ BitVec 32)) (|v_entry_point_~#a7~0.base_33| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_entry_point_~#a7~0.base_33| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_entry_point_~#a7~0.base_33|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 v_probe1_6_~p~0.base_54))))) (not (= (store (store .cse0 v_probe1_6_~p~0.base_54 (_ bv0 1)) |v_entry_point_~#a7~0.base_33| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_12|))))))) is different from false [2021-11-19 05:22:24,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:22:24,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544662561] [2021-11-19 05:22:24,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store (store (store |v_old(#valid)_BEFORE_CALL_13| |v_entry_point_~#a7~0.base_33| (_ bv1 1)) v_probe1_6_~p~0.base_54 (_ bv0 1)) |v_entry_point_~#a7~0.base_33| (_ bv0 1)) v_prenex_5)=(= (select (store (store (store |v_old(#valid)_BEFORE_CALL_13| |v_entry_point_~#a7~0.base_33| (_ bv1 1)) v_probe1_6_~p~0.base_54 (_ bv0 1)) |v_entry_point_~#a7~0.base_33| (_ bv0 1)) v_antiDerIndex_entry0_3) (select v_prenex_5 v_antiDerIndex_entry0_3))} [2021-11-19 05:22:24,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911006401] [2021-11-19 05:22:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:22:24,801 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 05:22:24,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/cvc4 [2021-11-19 05:22:24,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 05:22:24,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 05:22:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:22:25,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-19 05:22:25,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:22:25,223 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 12 treesize of output 9 [2021-11-19 05:22:29,394 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 [2021-11-19 05:22:38,647 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 [2021-11-19 05:22:39,022 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 [2021-11-19 05:22:39,327 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 [2021-11-19 05:22:39,680 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:22:39,680 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 33 treesize of output 25 [2021-11-19 05:23:20,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:23:20,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 41 [2021-11-19 05:23:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:23:33,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:23:39,144 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_20| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_20| |c_#valid|) (exists ((|#StackHeapBarrier| (_ BitVec 32)) (|v_probe1_6_#in~a.base_34| (_ BitVec 32)) (v_probe1_6_~p~0.base_60 (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_probe1_6_#in~a.base_34| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#in~a.base_34|)))) (bvult v_probe1_6_~p~0.base_60 |#StackHeapBarrier|) (bvult |#StackHeapBarrier| |v_probe1_6_#in~a.base_34|) (not (= |v_old(#valid)_BEFORE_CALL_20| (store (store .cse0 v_probe1_6_~p~0.base_60 (_ bv0 1)) |v_probe1_6_#in~a.base_34| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 v_probe1_6_~p~0.base_60))))))))))) is different from false [2021-11-19 05:23:39,514 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_20| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((|#StackHeapBarrier| (_ BitVec 32)) (|v_probe1_6_#in~a.base_34| (_ BitVec 32)) (v_probe1_6_~p~0.base_60 (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_probe1_6_#in~a.base_34| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_probe1_6_#in~a.base_34|)))) (bvult v_probe1_6_~p~0.base_60 |#StackHeapBarrier|) (bvult |#StackHeapBarrier| |v_probe1_6_#in~a.base_34|) (not (= |v_old(#valid)_BEFORE_CALL_20| (store (store .cse0 v_probe1_6_~p~0.base_60 (_ bv0 1)) |v_probe1_6_#in~a.base_34| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 v_probe1_6_~p~0.base_60))))))))) (= (store |c_#valid| |c_entry_point_~#a7~0.base| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_20|))) is different from false [2021-11-19 05:23:56,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Substitution failed: {(= (store (store (store |v_old(#valid)_BEFORE_CALL_21| |v_probe1_6_#in~a.base_34| (_ bv1 1)) v_probe1_6_~p~0.base_60 (_ bv0 1)) |v_probe1_6_#in~a.base_34| (_ bv0 1)) v_prenex_9)=(= (select v_prenex_9 v_antiDerIndex_entry0_4) (select (store (store (store |v_old(#valid)_BEFORE_CALL_21| |v_probe1_6_#in~a.base_34| (_ bv1 1)) v_probe1_6_~p~0.base_60 (_ bv0 1)) |v_probe1_6_#in~a.base_34| (_ bv0 1)) v_antiDerIndex_entry0_4))} [2021-11-19 05:23:56,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325188189] [2021-11-19 05:23:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:23:56,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:23:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:23:56,103 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:23:56,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e13263-1359-4d8e-b716-fe20342e02cf/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 05:23:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:23:56,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 05:23:56,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:23:56,413 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 [2021-11-19 05:23:56,529 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 [2021-11-19 05:23:56,659 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 [2021-11-19 05:23:56,740 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:23:56,741 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 31 treesize of output 23 [2021-11-19 05:24:02,936 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:24:02,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 39 [2021-11-19 05:24:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:24:25,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:24:26,620 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_28| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((v_probe1_6_~p~0.base_54 (_ BitVec 32)) (|v_entry_point_~#a7~0.base_33| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_entry_point_~#a7~0.base_33| (_ bv1 1)))) (and (= (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 v_probe1_6_~p~0.base_54))))))))) (_ bv0 1)) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_entry_point_~#a7~0.base_33|))) (not (= (store (store .cse0 v_probe1_6_~p~0.base_54 (_ bv0 1)) |v_entry_point_~#a7~0.base_33| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_28|))))) (= |v_old(#valid)_BEFORE_CALL_28| |c_#valid|))) is different from false [2021-11-19 05:24:51,511 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_28| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= (store |c_#valid| |c_entry_point_~#a7~0.base| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_28|) (exists ((v_probe1_6_~p~0.base_54 (_ BitVec 32)) (|v_entry_point_~#a7~0.base_33| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_entry_point_~#a7~0.base_33| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_entry_point_~#a7~0.base_33|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 v_probe1_6_~p~0.base_54))))))))))) (not (= (store (store .cse0 v_probe1_6_~p~0.base_54 (_ bv0 1)) |v_entry_point_~#a7~0.base_33| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_28|))))))) is different from false [2021-11-19 05:24:51,669 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_old(#valid)_BEFORE_CALL_28| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= |v_old(#valid)_BEFORE_CALL_28| (store (store |c_#valid| (select (select |c_#memory_$Pointer$.base| |c_entry_point_~#a7~0.base|) |c_entry_point_~#a7~0.offset|) (_ bv0 1)) |c_entry_point_~#a7~0.base| (_ bv0 1))) (exists ((v_probe1_6_~p~0.base_54 (_ BitVec 32)) (|v_entry_point_~#a7~0.base_33| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_entry_point_~#a7~0.base_33| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_entry_point_~#a7~0.base_33|))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 v_probe1_6_~p~0.base_54))))))))))) (not (= (store (store .cse0 v_probe1_6_~p~0.base_54 (_ bv0 1)) |v_entry_point_~#a7~0.base_33| (_ bv0 1)) |v_old(#valid)_BEFORE_CALL_28|))))))) is different from false [2021-11-19 05:24:52,246 INFO L354 Elim1Store]: treesize reduction 80, result has 64.4 percent of original size [2021-11-19 05:24:52,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 565 treesize of output 684 [2021-11-19 05:26:48,681 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 [2021-11-19 05:29:06,887 INFO L354 Elim1Store]: treesize reduction -34, result has 128.1 percent of original size [2021-11-19 05:29:06,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 170 treesize of output 312 [2021-11-19 05:29:19,634 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:29:19,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 693 treesize of output 675 [2021-11-19 05:29:24,336 INFO L354 Elim1Store]: treesize reduction 79, result has 64.9 percent of original size [2021-11-19 05:29:24,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 582 treesize of output 702 [2021-11-19 05:31:54,503 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 17 treesize of output 15