./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ --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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:29:15,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:29:15,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:29:15,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:29:15,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:29:15,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:29:15,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:29:15,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:29:15,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:29:15,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:29:15,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:29:15,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:29:15,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:29:15,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:29:15,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:29:15,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:29:15,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:29:15,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:29:15,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:29:15,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:29:15,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:29:15,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:29:15,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:29:15,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:29:15,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:29:15,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:29:15,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:29:15,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:29:15,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:29:15,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:29:15,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:29:15,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:29:15,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:29:15,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:29:15,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:29:15,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:29:15,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:29:15,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:29:15,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:29:15,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:29:15,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:29:15,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:29:15,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:29:15,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:29:15,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:29:15,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:29:15,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:29:15,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:29:15,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:29:15,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:29:15,966 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:29:15,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:29:15,967 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:29:15,968 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:29:15,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:29:15,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:29:15,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:29:15,968 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:29:15,969 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:29:15,969 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:29:15,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:29:15,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:29:15,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:29:15,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:29:15,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:29:15,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:29:15,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:29:15,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:15,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:29:15,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:29:15,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:29:15,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:29:15,973 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_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2022-10-17 10:29:16,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:29:16,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:29:16,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:29:16,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:29:16,357 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:29:16,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-10-17 10:29:16,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/629aead59/c7e1496a60f343688c6b52a1f32d7faa/FLAG24e0bb828 [2022-10-17 10:29:17,046 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:29:17,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-10-17 10:29:17,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/629aead59/c7e1496a60f343688c6b52a1f32d7faa/FLAG24e0bb828 [2022-10-17 10:29:17,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/629aead59/c7e1496a60f343688c6b52a1f32d7faa [2022-10-17 10:29:17,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:29:17,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:29:17,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:17,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:29:17,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:29:17,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:17" (1/1) ... [2022-10-17 10:29:17,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5126815d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:17, skipping insertion in model container [2022-10-17 10:29:17,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:17" (1/1) ... [2022-10-17 10:29:17,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:29:17,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:17,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-10-17 10:29:18,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-10-17 10:29:18,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:18,048 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 10:29:18,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30fa4599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:18, skipping insertion in model container [2022-10-17 10:29:18,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:18,057 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:29:18,059 INFO L158 Benchmark]: Toolchain (without parser) took 657.35ms. Allocated memory is still 109.1MB. Free memory was 69.2MB in the beginning and 73.9MB in the end (delta: -4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:29:18,061 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:29:18,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.22ms. Allocated memory is still 109.1MB. Free memory was 69.0MB in the beginning and 73.9MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:29:18,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.22ms. Allocated memory is still 109.1MB. Free memory was 69.0MB in the beginning and 73.9MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ --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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:29:20,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:29:20,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:29:20,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:29:20,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:29:20,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:29:20,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:29:20,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:29:20,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:29:20,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:29:20,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:29:20,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:29:20,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:29:20,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:29:20,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:29:20,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:29:20,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:29:20,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:29:20,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:29:20,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:29:20,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:29:20,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:29:20,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:29:20,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:29:20,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:29:20,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:29:20,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:29:20,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:29:20,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:29:20,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:29:20,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:29:20,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:29:20,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:29:20,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:29:20,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:29:20,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:29:20,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:29:20,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:29:20,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:29:20,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:29:20,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:29:20,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:29:20,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:29:20,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:29:20,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:29:20,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:29:20,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:29:20,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:29:20,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:29:20,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:29:20,519 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:29:20,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:29:20,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:29:20,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:29:20,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:29:20,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:29:20,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:29:20,521 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:29:20,521 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:29:20,522 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:29:20,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:29:20,522 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:29:20,522 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:29:20,523 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:29:20,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:29:20,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:29:20,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:29:20,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:29:20,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:29:20,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:20,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:29:20,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:29:20,525 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:29:20,525 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:29:20,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:29:20,526 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_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2022-10-17 10:29:20,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:29:20,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:29:20,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:29:20,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:29:20,954 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:29:20,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-10-17 10:29:21,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/df25e0d42/93b9222f877349b98a83ea9889e2a196/FLAGb79c5e496 [2022-10-17 10:29:21,679 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:29:21,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-10-17 10:29:21,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/df25e0d42/93b9222f877349b98a83ea9889e2a196/FLAGb79c5e496 [2022-10-17 10:29:21,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/data/df25e0d42/93b9222f877349b98a83ea9889e2a196 [2022-10-17 10:29:21,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:29:21,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:29:21,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:21,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:29:21,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:29:21,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:21" (1/1) ... [2022-10-17 10:29:21,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ee8cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:21, skipping insertion in model container [2022-10-17 10:29:21,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:21" (1/1) ... [2022-10-17 10:29:21,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:29:22,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:22,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-10-17 10:29:22,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-10-17 10:29:22,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:22,661 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:29:22,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:22,696 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-10-17 10:29:22,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-10-17 10:29:22,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:22,781 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:29:22,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-10-17 10:29:22,849 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-10-17 10:29:22,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:22,945 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:29:22,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22 WrapperNode [2022-10-17 10:29:22,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:22,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:22,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:29:22,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:29:22,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,119 INFO L138 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 890 [2022-10-17 10:29:23,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:23,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:29:23,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:29:23,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:29:23,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:29:23,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:29:23,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:29:23,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:29:23,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (1/1) ... [2022-10-17 10:29:23,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:23,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:23,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:29:23,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:29:23,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 10:29:23,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:29:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:29:23,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:29:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:29:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:29:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:29:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:29:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:29:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:29:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:29:23,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:29:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:29:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:29:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:29:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:29:23,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:29:23,618 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:29:23,620 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:29:23,624 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:29:28,090 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:29:28,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:29:28,116 INFO L300 CfgBuilder]: Removed 54 assume(true) statements. [2022-10-17 10:29:28,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:28 BoogieIcfgContainer [2022-10-17 10:29:28,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:29:28,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:29:28,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:29:28,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:29:28,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:29:21" (1/3) ... [2022-10-17 10:29:28,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2a225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:28, skipping insertion in model container [2022-10-17 10:29:28,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:22" (2/3) ... [2022-10-17 10:29:28,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2a225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:28, skipping insertion in model container [2022-10-17 10:29:28,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:28" (3/3) ... [2022-10-17 10:29:28,133 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-1.i [2022-10-17 10:29:28,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:29:28,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2022-10-17 10:29:28,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:29:28,241 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f727146, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:29:28,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2022-10-17 10:29:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:29:28,256 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:28,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:29:28,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-10-17 10:29:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:28,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79333966] [2022-10-17 10:29:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:28,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:28,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:28,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:28,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:29:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:28,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:29:28,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:28,539 INFO L390 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 7 [2022-10-17 10:29:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:28,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:28,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79333966] [2022-10-17 10:29:28,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79333966] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:28,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:28,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345991808] [2022-10-17 10:29:28,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:28,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:28,655 INFO L87 Difference]: Start difference. First operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:30,251 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2022-10-17 10:29:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:30,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-17 10:29:30,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:30,274 INFO L225 Difference]: With dead ends: 869 [2022-10-17 10:29:30,274 INFO L226 Difference]: Without dead ends: 867 [2022-10-17 10:29:30,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:30,279 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:30,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:29:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-10-17 10:29:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2022-10-17 10:29:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 443 states have (on average 2.0474040632054176) internal successors, (907), 860 states have internal predecessors, (907), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2022-10-17 10:29:30,376 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2022-10-17 10:29:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:30,376 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2022-10-17 10:29:30,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2022-10-17 10:29:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:29:30,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:30,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:29:30,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:30,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:30,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-10-17 10:29:30,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:30,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420434021] [2022-10-17 10:29:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:30,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:30,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:30,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:29:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:30,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:29:30,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:30,718 INFO L390 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 [2022-10-17 10:29:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:30,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:30,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:30,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420434021] [2022-10-17 10:29:30,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420434021] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:30,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:30,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:30,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610705351] [2022-10-17 10:29:30,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:30,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:30,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:30,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:30,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:30,742 INFO L87 Difference]: Start difference. First operand 866 states and 923 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:33,175 INFO L93 Difference]: Finished difference Result 1085 states and 1173 transitions. [2022-10-17 10:29:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:33,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-17 10:29:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:33,182 INFO L225 Difference]: With dead ends: 1085 [2022-10-17 10:29:33,182 INFO L226 Difference]: Without dead ends: 1085 [2022-10-17 10:29:33,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:33,184 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 240 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:33,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1312 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:29:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-10-17 10:29:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 998. [2022-10-17 10:29:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 571 states have (on average 2.0052539404553413) internal successors, (1145), 992 states have internal predecessors, (1145), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:29:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1171 transitions. [2022-10-17 10:29:33,222 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1171 transitions. Word has length 3 [2022-10-17 10:29:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:33,223 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1171 transitions. [2022-10-17 10:29:33,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1171 transitions. [2022-10-17 10:29:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:29:33,223 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:33,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:33,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:33,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:33,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:33,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:33,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-10-17 10:29:33,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:33,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498834572] [2022-10-17 10:29:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:33,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:33,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:33,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:33,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:29:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:33,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:29:33,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:33,609 INFO L390 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 [2022-10-17 10:29:33,616 INFO L390 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 7 [2022-10-17 10:29:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:29:33,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-10-17 10:29:33,756 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 10:29:33,757 INFO L390 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 13 treesize of output 13 [2022-10-17 10:29:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:33,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:33,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:33,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498834572] [2022-10-17 10:29:33,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498834572] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:33,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:33,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:29:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099955033] [2022-10-17 10:29:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:33,785 INFO L87 Difference]: Start difference. First operand 998 states and 1171 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:35,899 INFO L93 Difference]: Finished difference Result 988 states and 1160 transitions. [2022-10-17 10:29:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:29:35,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 10:29:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:35,912 INFO L225 Difference]: With dead ends: 988 [2022-10-17 10:29:35,912 INFO L226 Difference]: Without dead ends: 988 [2022-10-17 10:29:35,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:35,914 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 874 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:35,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 347 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:29:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-10-17 10:29:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 855. [2022-10-17 10:29:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 443 states have (on average 2.020316027088036) internal successors, (895), 849 states have internal predecessors, (895), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 911 transitions. [2022-10-17 10:29:35,942 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 911 transitions. Word has length 7 [2022-10-17 10:29:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:35,942 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 911 transitions. [2022-10-17 10:29:35,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:35,943 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 911 transitions. [2022-10-17 10:29:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:29:35,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:35,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:35,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:36,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:36,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:36,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-10-17 10:29:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:36,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122965326] [2022-10-17 10:29:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:36,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:36,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:29:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:36,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:29:36,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:36,283 INFO L390 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 7 [2022-10-17 10:29:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:36,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:36,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:36,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122965326] [2022-10-17 10:29:36,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122965326] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:36,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:36,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888259996] [2022-10-17 10:29:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:36,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:36,298 INFO L87 Difference]: Start difference. First operand 855 states and 911 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:37,979 INFO L93 Difference]: Finished difference Result 1031 states and 1118 transitions. [2022-10-17 10:29:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:37,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 10:29:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:37,990 INFO L225 Difference]: With dead ends: 1031 [2022-10-17 10:29:37,990 INFO L226 Difference]: Without dead ends: 1031 [2022-10-17 10:29:37,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:37,991 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 814 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:37,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 871 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:29:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-10-17 10:29:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 808. [2022-10-17 10:29:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 443 states have (on average 1.9142212189616252) internal successors, (848), 802 states have internal predecessors, (848), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 864 transitions. [2022-10-17 10:29:38,027 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 864 transitions. Word has length 8 [2022-10-17 10:29:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:38,028 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 864 transitions. [2022-10-17 10:29:38,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 864 transitions. [2022-10-17 10:29:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:29:38,029 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:38,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:38,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:38,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:38,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-10-17 10:29:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:38,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128659199] [2022-10-17 10:29:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:38,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:38,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:38,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:38,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:29:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:38,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:29:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:38,366 INFO L390 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 [2022-10-17 10:29:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:38,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:38,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:38,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128659199] [2022-10-17 10:29:38,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128659199] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:38,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:38,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553654324] [2022-10-17 10:29:38,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:38,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:38,404 INFO L87 Difference]: Start difference. First operand 808 states and 864 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:40,680 INFO L93 Difference]: Finished difference Result 1098 states and 1187 transitions. [2022-10-17 10:29:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:40,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 10:29:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:40,686 INFO L225 Difference]: With dead ends: 1098 [2022-10-17 10:29:40,686 INFO L226 Difference]: Without dead ends: 1098 [2022-10-17 10:29:40,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:40,687 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 501 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:40,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1229 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:29:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-10-17 10:29:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 830. [2022-10-17 10:29:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 475 states have (on average 1.9031578947368422) internal successors, (904), 824 states have internal predecessors, (904), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 920 transitions. [2022-10-17 10:29:40,712 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 920 transitions. Word has length 8 [2022-10-17 10:29:40,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:40,712 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 920 transitions. [2022-10-17 10:29:40,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:40,713 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 920 transitions. [2022-10-17 10:29:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:29:40,713 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:40,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:40,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-10-17 10:29:40,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:40,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:40,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2022-10-17 10:29:40,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:40,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401931906] [2022-10-17 10:29:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:40,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:40,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:29:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:41,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:29:41,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:41,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:29:41,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:29:41,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:29:41,107 INFO L390 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 30 treesize of output 39 [2022-10-17 10:29:41,167 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:29:41,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-10-17 10:29:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:41,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:41,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:41,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401931906] [2022-10-17 10:29:41,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401931906] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:41,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:41,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:29:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642795251] [2022-10-17 10:29:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:41,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:41,187 INFO L87 Difference]: Start difference. First operand 830 states and 920 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:42,486 INFO L93 Difference]: Finished difference Result 1051 states and 1171 transitions. [2022-10-17 10:29:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:29:42,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 10:29:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:42,492 INFO L225 Difference]: With dead ends: 1051 [2022-10-17 10:29:42,492 INFO L226 Difference]: Without dead ends: 1051 [2022-10-17 10:29:42,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:29:42,493 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 237 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:42,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2333 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:29:42,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-10-17 10:29:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 832. [2022-10-17 10:29:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 477 states have (on average 1.89937106918239) internal successors, (906), 826 states have internal predecessors, (906), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 922 transitions. [2022-10-17 10:29:42,517 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 922 transitions. Word has length 10 [2022-10-17 10:29:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:42,518 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 922 transitions. [2022-10-17 10:29:42,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 922 transitions. [2022-10-17 10:29:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:29:42,519 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:42,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:42,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-10-17 10:29:42,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:42,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:42,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-10-17 10:29:42,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:42,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577367479] [2022-10-17 10:29:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:42,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:42,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:42,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:42,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:29:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:42,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:29:42,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:42,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:42,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:42,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577367479] [2022-10-17 10:29:42,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577367479] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:42,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:42,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:29:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358312090] [2022-10-17 10:29:42,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:42,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:42,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:42,917 INFO L87 Difference]: Start difference. First operand 832 states and 922 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:42,943 INFO L93 Difference]: Finished difference Result 801 states and 890 transitions. [2022-10-17 10:29:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 10:29:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:42,948 INFO L225 Difference]: With dead ends: 801 [2022-10-17 10:29:42,949 INFO L226 Difference]: Without dead ends: 801 [2022-10-17 10:29:42,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:42,950 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 776 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:42,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 839 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:29:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-10-17 10:29:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 790. [2022-10-17 10:29:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 459 states have (on average 1.8801742919389979) internal successors, (863), 784 states have internal predecessors, (863), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 879 transitions. [2022-10-17 10:29:42,975 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 879 transitions. Word has length 18 [2022-10-17 10:29:42,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:42,976 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 879 transitions. [2022-10-17 10:29:42,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 879 transitions. [2022-10-17 10:29:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:29:42,977 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:42,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:42,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:43,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-10-17 10:29:43,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:43,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544614182] [2022-10-17 10:29:43,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:43,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:43,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:43,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:43,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:29:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:43,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:29:43,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:43,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:43,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:43,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544614182] [2022-10-17 10:29:43,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544614182] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:43,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:43,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:29:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526199192] [2022-10-17 10:29:43,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:43,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:43,400 INFO L87 Difference]: Start difference. First operand 790 states and 879 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:43,482 INFO L93 Difference]: Finished difference Result 780 states and 862 transitions. [2022-10-17 10:29:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:29:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-17 10:29:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:43,487 INFO L225 Difference]: With dead ends: 780 [2022-10-17 10:29:43,491 INFO L226 Difference]: Without dead ends: 780 [2022-10-17 10:29:43,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:29:43,492 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 747 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:43,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1549 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:29:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-10-17 10:29:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 768. [2022-10-17 10:29:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 762 states have internal predecessors, (834), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 850 transitions. [2022-10-17 10:29:43,515 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 850 transitions. Word has length 20 [2022-10-17 10:29:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:43,515 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 850 transitions. [2022-10-17 10:29:43,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 850 transitions. [2022-10-17 10:29:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:29:43,517 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:43,517 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:29:43,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:43,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:43,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-10-17 10:29:43,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:43,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033206532] [2022-10-17 10:29:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:43,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:43,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:43,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:29:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:43,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:29:43,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:43,902 INFO L390 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 7 [2022-10-17 10:29:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:44,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:44,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:44,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033206532] [2022-10-17 10:29:44,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033206532] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:44,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:44,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:29:44,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553463235] [2022-10-17 10:29:44,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:44,007 INFO L87 Difference]: Start difference. First operand 768 states and 850 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:45,659 INFO L93 Difference]: Finished difference Result 998 states and 1111 transitions. [2022-10-17 10:29:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:29:45,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-10-17 10:29:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:45,664 INFO L225 Difference]: With dead ends: 998 [2022-10-17 10:29:45,664 INFO L226 Difference]: Without dead ends: 998 [2022-10-17 10:29:45,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:29:45,665 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1357 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:45,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 781 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:29:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-10-17 10:29:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 764. [2022-10-17 10:29:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 451 states have (on average 1.8403547671840355) internal successors, (830), 758 states have internal predecessors, (830), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 846 transitions. [2022-10-17 10:29:45,686 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 846 transitions. Word has length 34 [2022-10-17 10:29:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:45,686 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 846 transitions. [2022-10-17 10:29:45,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 846 transitions. [2022-10-17 10:29:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:29:45,688 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:45,688 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:29:45,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:45,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:45,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-10-17 10:29:45,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:45,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974060467] [2022-10-17 10:29:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:45,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:45,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:45,902 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:45,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:29:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:46,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:29:46,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:46,083 INFO L390 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 [2022-10-17 10:29:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:46,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:46,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:46,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974060467] [2022-10-17 10:29:46,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974060467] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:46,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:46,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:29:46,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309736073] [2022-10-17 10:29:46,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:46,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:46,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:46,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:46,288 INFO L87 Difference]: Start difference. First operand 764 states and 846 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:48,867 INFO L93 Difference]: Finished difference Result 1039 states and 1120 transitions. [2022-10-17 10:29:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:29:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-10-17 10:29:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:48,873 INFO L225 Difference]: With dead ends: 1039 [2022-10-17 10:29:48,873 INFO L226 Difference]: Without dead ends: 1039 [2022-10-17 10:29:48,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:29:48,874 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 806 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:48,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1280 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 10:29:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-10-17 10:29:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 760. [2022-10-17 10:29:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 451 states have (on average 1.8314855875831486) internal successors, (826), 754 states have internal predecessors, (826), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 842 transitions. [2022-10-17 10:29:48,894 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 842 transitions. Word has length 34 [2022-10-17 10:29:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:48,894 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 842 transitions. [2022-10-17 10:29:48,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:48,895 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 842 transitions. [2022-10-17 10:29:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-17 10:29:48,896 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:48,896 INFO L195 NwaCegarLoop]: 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, 1, 1, 1] [2022-10-17 10:29:48,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-10-17 10:29:49,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:49,108 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2022-10-17 10:29:49,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:49,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441593972] [2022-10-17 10:29:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:49,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:49,111 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:49,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-10-17 10:29:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:49,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:29:49,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:49,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:29:49,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:29:49,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441593972] [2022-10-17 10:29:49,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441593972] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:49,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:49,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:29:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743126093] [2022-10-17 10:29:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:29:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:49,418 INFO L87 Difference]: Start difference. First operand 760 states and 842 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:49,482 INFO L93 Difference]: Finished difference Result 765 states and 843 transitions. [2022-10-17 10:29:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:29:49,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-10-17 10:29:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:49,487 INFO L225 Difference]: With dead ends: 765 [2022-10-17 10:29:49,487 INFO L226 Difference]: Without dead ends: 765 [2022-10-17 10:29:49,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:29:49,488 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 723 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:49,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1527 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:29:49,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-10-17 10:29:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 754. [2022-10-17 10:29:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 445 states have (on average 1.8337078651685392) internal successors, (816), 748 states have internal predecessors, (816), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:29:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 832 transitions. [2022-10-17 10:29:49,505 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 832 transitions. Word has length 49 [2022-10-17 10:29:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:49,506 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 832 transitions. [2022-10-17 10:29:49,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 832 transitions. [2022-10-17 10:29:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:29:49,514 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:49,515 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:49,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:49,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:29:49,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-10-17 10:29:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2022-10-17 10:29:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:29:49,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010751786] [2022-10-17 10:29:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:49,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:29:49,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:29:49,730 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:29:49,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54ab167b-4921-4d15-9282-cf8f87723751/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-10-17 10:29:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:49,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:29:49,955 INFO L286 TraceCheckSpWp]: Computing forward predicates...