./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:23:43,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:23:43,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:23:43,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:23:43,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:23:43,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:23:43,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:23:43,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:23:43,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:23:43,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:23:43,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:23:43,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:23:43,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:23:43,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:23:43,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:23:43,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:23:43,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:23:43,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:23:43,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:23:43,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:23:43,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:23:43,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:23:43,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:23:43,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:23:43,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:23:43,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:23:43,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:23:43,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:23:43,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:23:43,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:23:43,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:23:43,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:23:43,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:23:43,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:23:43,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:23:43,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:23:43,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:23:43,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:23:43,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:23:43,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:23:43,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:23:43,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:23:44,041 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:23:44,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:23:44,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:23:44,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:23:44,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:23:44,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:23:44,045 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:23:44,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:23:44,045 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:23:44,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:23:44,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:23:44,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:23:44,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:23:44,048 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:23:44,048 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:23:44,048 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:23:44,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:23:44,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:23:44,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:23:44,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:23:44,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:23:44,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:23:44,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:23:44,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:44,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:23:44,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:23:44,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:23:44,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:23:44,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:23:44,053 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_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-07 07:23:44,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:23:44,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:23:44,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:23:44,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:23:44,400 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:23:44,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-07 07:23:44,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/5249b43be/934388ef064e4808810084d058a07ec1/FLAGe336cf99b [2021-11-07 07:23:45,199 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:23:45,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-07 07:23:45,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/5249b43be/934388ef064e4808810084d058a07ec1/FLAGe336cf99b [2021-11-07 07:23:45,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/5249b43be/934388ef064e4808810084d058a07ec1 [2021-11-07 07:23:45,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:23:45,399 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:23:45,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:45,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:23:45,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:23:45,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:45" (1/1) ... [2021-11-07 07:23:45,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab32b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:45, skipping insertion in model container [2021-11-07 07:23:45,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:45" (1/1) ... [2021-11-07 07:23:45,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:23:45,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:23:45,912 WARN L228 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_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-07 07:23:45,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:46,009 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 07:23:46,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1206c074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:46, skipping insertion in model container [2021-11-07 07:23:46,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:46,017 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 07:23:46,019 INFO L168 Benchmark]: Toolchain (without parser) took 618.80 ms. Allocated memory is still 115.3 MB. Free memory was 85.0 MB in the beginning and 81.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:23:46,021 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory was 69.4 MB in the beginning and 69.3 MB in the end (delta: 47.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:23:46,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.26 ms. Allocated memory is still 115.3 MB. Free memory was 85.0 MB in the beginning and 81.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:23:46,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory was 69.4 MB in the beginning and 69.3 MB in the end (delta: 47.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 616.26 ms. Allocated memory is still 115.3 MB. Free memory was 85.0 MB in the beginning and 81.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:23:48,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:23:48,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:23:48,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:23:48,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:23:48,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:23:48,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:23:48,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:23:48,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:23:48,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:23:48,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:23:48,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:23:48,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:23:48,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:23:48,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:23:48,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:23:48,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:23:48,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:23:48,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:23:48,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:23:48,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:23:48,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:23:48,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:23:48,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:23:48,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:23:48,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:23:48,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:23:48,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:23:48,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:23:48,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:23:48,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:23:48,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:23:48,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:23:48,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:23:48,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:23:48,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:23:48,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:23:48,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:23:48,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:23:48,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:23:48,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:23:48,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 07:23:48,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:23:48,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:23:48,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:23:48,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:23:48,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:23:48,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:23:48,583 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:23:48,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:23:48,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:23:48,584 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:23:48,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:23:48,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:23:48,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:23:48,586 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:23:48,586 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:23:48,587 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:23:48,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:23:48,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:23:48,588 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:23:48,588 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:23:48,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:23:48,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:23:48,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:23:48,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:23:48,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:23:48,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:48,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:23:48,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:23:48,591 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:23:48,591 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:23:48,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:23:48,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:23:48,593 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_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-07 07:23:48,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:23:48,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:23:49,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:23:49,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:23:49,003 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:23:49,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-07 07:23:49,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/8c02729e5/13c314629e684231a238fa77c67536d6/FLAGb0efaaf47 [2021-11-07 07:23:49,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:23:49,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-07 07:23:49,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/8c02729e5/13c314629e684231a238fa77c67536d6/FLAGb0efaaf47 [2021-11-07 07:23:50,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/data/8c02729e5/13c314629e684231a238fa77c67536d6 [2021-11-07 07:23:50,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:23:50,101 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:23:50,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:50,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:23:50,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:23:50,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:50" (1/1) ... [2021-11-07 07:23:50,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d70870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:50, skipping insertion in model container [2021-11-07 07:23:50,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:50" (1/1) ... [2021-11-07 07:23:50,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:23:50,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:23:50,724 WARN L228 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_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-07 07:23:50,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:50,868 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 07:23:50,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:23:50,927 WARN L228 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_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-07 07:23:50,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:50,993 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:23:51,028 WARN L228 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_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-07 07:23:51,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:51,190 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:23:51,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51 WrapperNode [2021-11-07 07:23:51,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:51,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:23:51,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:23:51,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:23:51,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:23:51,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:23:51,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:23:51,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:23:51,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (1/1) ... [2021-11-07 07:23:51,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:51,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:51,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:23:51,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:23:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:23:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:23:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:23:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 07:23:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 07:23:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 07:23:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 07:23:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 07:23:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 07:23:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-07 07:23:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-07 07:23:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:23:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 07:23:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 07:23:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-07 07:23:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-07 07:23:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 07:23:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:23:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 07:23:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-07 07:23:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 07:23:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 07:23:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-07 07:23:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-07 07:23:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 07:23:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-07 07:23:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-07 07:23:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-07 07:23:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-07 07:23:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-07 07:23:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-07 07:23:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-07 07:23:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 07:23:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 07:23:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-07 07:23:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-07 07:23:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 07:23:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-07 07:23:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-07 07:23:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-07 07:23:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-07 07:23:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-07 07:23:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-07 07:23:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-07 07:23:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-07 07:23:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-07 07:23:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-07 07:23:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-07 07:23:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-07 07:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-07 07:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-07 07:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-07 07:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-07 07:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-07 07:23:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-07 07:23:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-07 07:23:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-07 07:23:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-07 07:23:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-07 07:23:51,520 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-07 07:23:51,520 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-07 07:23:51,521 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-07 07:23:51,521 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-07 07:23:51,521 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-07 07:23:51,521 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:23:51,521 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:23:51,522 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:23:51,522 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:23:51,522 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:23:51,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:23:51,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:23:51,522 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:23:51,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:23:51,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:23:51,523 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:23:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:23:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:23:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:23:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:23:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:23:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 07:23:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 07:23:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 07:23:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 07:23:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 07:23:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:23:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:23:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:23:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:23:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:23:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:23:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:23:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:23:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:23:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:23:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:23:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:23:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:23:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:23:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:23:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:23:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:23:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:23:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:23:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:23:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:23:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:23:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:23:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:23:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:23:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:23:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:23:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:23:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:23:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:23:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:23:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:23:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:23:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:23:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:23:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:23:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:23:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:23:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:23:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:23:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:23:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:23:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:23:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:23:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:23:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:23:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:23:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:23:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:23:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:23:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:23:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:23:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:23:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:23:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:23:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:23:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:23:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:23:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:23:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:23:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:23:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:23:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:23:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:23:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:23:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:23:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:23:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:23:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:23:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:23:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:23:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:23:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:23:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:23:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:23:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:23:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:23:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:23:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:23:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:23:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:23:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:23:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:23:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:23:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:23:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:23:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 07:23:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 07:23:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 07:23:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 07:23:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:23:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-07 07:23:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-07 07:23:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:23:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:23:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:23:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 07:23:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:23:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:23:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 07:23:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:23:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:23:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:23:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:23:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:23:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:23:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 07:23:52,168 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:23:55,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:23:55,581 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-07 07:23:55,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:23:55 BoogieIcfgContainer [2021-11-07 07:23:55,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:23:55,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:23:55,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:23:55,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:23:55,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:23:50" (1/3) ... [2021-11-07 07:23:55,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97134c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:23:55, skipping insertion in model container [2021-11-07 07:23:55,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51" (2/3) ... [2021-11-07 07:23:55,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97134c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:23:55, skipping insertion in model container [2021-11-07 07:23:55,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:23:55" (3/3) ... [2021-11-07 07:23:55,595 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2021-11-07 07:23:55,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:23:55,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2021-11-07 07:23:55,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:23:55,659 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:23:55,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2021-11-07 07:23:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-07 07:23:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:23:55,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:55,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:55,714 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:23:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779480, now seen corresponding path program 1 times [2021-11-07 07:23:55,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:23:55,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948780905] [2021-11-07 07:23:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:55,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:23:55,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:23:55,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:23:55,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:23:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:55,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 07:23:55,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:56,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:23:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:56,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:23:56,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948780905] [2021-11-07 07:23:56,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948780905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:56,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:56,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:23:56,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222302307] [2021-11-07 07:23:56,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:23:56,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:23:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:23:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:23:56,145 INFO L87 Difference]: Start difference. First operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:23:56,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:56,228 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2021-11-07 07:23:56,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:23:56,229 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-07 07:23:56,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:56,262 INFO L225 Difference]: With dead ends: 667 [2021-11-07 07:23:56,266 INFO L226 Difference]: Without dead ends: 664 [2021-11-07 07:23:56,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:23:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-07 07:23:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2021-11-07 07:23:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 322 states have (on average 2.111801242236025) internal successors, (680), 653 states have internal predecessors, (680), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 07:23:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2021-11-07 07:23:56,384 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 9 [2021-11-07 07:23:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:56,385 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2021-11-07 07:23:56,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:23:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2021-11-07 07:23:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:23:56,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:56,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:56,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:56,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:23:56,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:23:56,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779418, now seen corresponding path program 1 times [2021-11-07 07:23:56,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:23:56,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079304451] [2021-11-07 07:23:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:56,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:23:56,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:23:56,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:23:56,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:23:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:56,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:23:56,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:56,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:23:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:56,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:23:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:56,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:23:56,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079304451] [2021-11-07 07:23:56,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079304451] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:56,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:56,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:23:56,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268817470] [2021-11-07 07:23:56,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:23:56,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:23:56,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:23:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:23:56,956 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:23:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:58,538 INFO L93 Difference]: Finished difference Result 622 states and 670 transitions. [2021-11-07 07:23:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:23:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-07 07:23:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:58,543 INFO L225 Difference]: With dead ends: 622 [2021-11-07 07:23:58,544 INFO L226 Difference]: Without dead ends: 622 [2021-11-07 07:23:58,544 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:23:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-07 07:23:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2021-11-07 07:23:58,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 322 states have (on average 1.9596273291925466) internal successors, (631), 604 states have internal predecessors, (631), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 07:23:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 662 transitions. [2021-11-07 07:23:58,568 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 662 transitions. Word has length 9 [2021-11-07 07:23:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:58,568 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 662 transitions. [2021-11-07 07:23:58,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:23:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 662 transitions. [2021-11-07 07:23:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:23:58,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:58,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:58,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:58,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:23:58,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:23:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779417, now seen corresponding path program 1 times [2021-11-07 07:23:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:23:58,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690317796] [2021-11-07 07:23:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:58,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:23:58,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:23:58,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:23:58,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 07:23:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:59,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:23:59,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:59,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:23:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:59,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:23:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:59,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:23:59,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690317796] [2021-11-07 07:23:59,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690317796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:59,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:59,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:23:59,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131729178] [2021-11-07 07:23:59,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:23:59,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:23:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:23:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:23:59,209 INFO L87 Difference]: Start difference. First operand 615 states and 662 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:02,089 INFO L93 Difference]: Finished difference Result 688 states and 739 transitions. [2021-11-07 07:24:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:02,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-07 07:24:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:02,094 INFO L225 Difference]: With dead ends: 688 [2021-11-07 07:24:02,094 INFO L226 Difference]: Without dead ends: 688 [2021-11-07 07:24:02,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-07 07:24:02,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 637. [2021-11-07 07:24:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 354 states have (on average 1.9406779661016949) internal successors, (687), 626 states have internal predecessors, (687), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 07:24:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 718 transitions. [2021-11-07 07:24:02,114 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 718 transitions. Word has length 9 [2021-11-07 07:24:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:02,115 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 718 transitions. [2021-11-07 07:24:02,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:02,115 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 718 transitions. [2021-11-07 07:24:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 07:24:02,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:02,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:02,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:02,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:02,327 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr322REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1087799300, now seen corresponding path program 1 times [2021-11-07 07:24:02,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:02,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180309744] [2021-11-07 07:24:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:02,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:02,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:02,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:02,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 07:24:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:02,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:24:02,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:02,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:02,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:02,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180309744] [2021-11-07 07:24:02,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180309744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:02,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:02,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:24:02,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258122100] [2021-11-07 07:24:02,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:02,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:02,575 INFO L87 Difference]: Start difference. First operand 637 states and 718 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:02,695 INFO L93 Difference]: Finished difference Result 1219 states and 1361 transitions. [2021-11-07 07:24:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:02,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-07 07:24:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:02,705 INFO L225 Difference]: With dead ends: 1219 [2021-11-07 07:24:02,705 INFO L226 Difference]: Without dead ends: 1219 [2021-11-07 07:24:02,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-11-07 07:24:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 959. [2021-11-07 07:24:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 676 states have (on average 1.9585798816568047) internal successors, (1324), 945 states have internal predecessors, (1324), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1361 transitions. [2021-11-07 07:24:02,748 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1361 transitions. Word has length 10 [2021-11-07 07:24:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:02,748 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1361 transitions. [2021-11-07 07:24:02,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1361 transitions. [2021-11-07 07:24:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:24:02,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:02,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:02,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:02,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:02,962 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:02,963 INFO L85 PathProgramCache]: Analyzing trace with hash 548999728, now seen corresponding path program 1 times [2021-11-07 07:24:02,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:02,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77063718] [2021-11-07 07:24:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:02,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:02,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:02,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 07:24:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:03,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:24:03,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:03,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:03,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:03,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77063718] [2021-11-07 07:24:03,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77063718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:03,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:03,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:24:03,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238627400] [2021-11-07 07:24:03,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:03,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:03,281 INFO L87 Difference]: Start difference. First operand 959 states and 1361 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:03,327 INFO L93 Difference]: Finished difference Result 899 states and 1275 transitions. [2021-11-07 07:24:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:24:03,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-07 07:24:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:03,335 INFO L225 Difference]: With dead ends: 899 [2021-11-07 07:24:03,335 INFO L226 Difference]: Without dead ends: 899 [2021-11-07 07:24:03,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:03,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-07 07:24:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-11-07 07:24:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 640 states have (on average 1.934375) internal successors, (1238), 885 states have internal predecessors, (1238), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1275 transitions. [2021-11-07 07:24:03,370 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1275 transitions. Word has length 15 [2021-11-07 07:24:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:03,371 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1275 transitions. [2021-11-07 07:24:03,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1275 transitions. [2021-11-07 07:24:03,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:24:03,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:03,372 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:03,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:03,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:03,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash -692239478, now seen corresponding path program 1 times [2021-11-07 07:24:03,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:03,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772530670] [2021-11-07 07:24:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:03,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:03,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:03,586 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:03,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 07:24:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:03,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:03,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:03,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:03,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:03,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772530670] [2021-11-07 07:24:03,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772530670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:03,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:03,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 07:24:03,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452695625] [2021-11-07 07:24:03,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:24:03,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:24:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:03,868 INFO L87 Difference]: Start difference. First operand 899 states and 1275 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:03,949 INFO L93 Difference]: Finished difference Result 871 states and 1219 transitions. [2021-11-07 07:24:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:03,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-07 07:24:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:03,956 INFO L225 Difference]: With dead ends: 871 [2021-11-07 07:24:03,956 INFO L226 Difference]: Without dead ends: 871 [2021-11-07 07:24:03,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:24:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-11-07 07:24:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2021-11-07 07:24:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 624 states have (on average 1.891025641025641) internal successors, (1180), 855 states have internal predecessors, (1180), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1217 transitions. [2021-11-07 07:24:03,984 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1217 transitions. Word has length 17 [2021-11-07 07:24:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:03,985 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1217 transitions. [2021-11-07 07:24:03,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1217 transitions. [2021-11-07 07:24:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 07:24:03,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:03,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:04,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:04,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:04,205 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:04,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash 460749560, now seen corresponding path program 1 times [2021-11-07 07:24:04,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:04,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224994141] [2021-11-07 07:24:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:04,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:04,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:04,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:04,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 07:24:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:04,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:04,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:04,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:24:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:04,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:04,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:04,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224994141] [2021-11-07 07:24:04,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224994141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:04,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:04,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:24:04,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412319688] [2021-11-07 07:24:04,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:04,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:04,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:04,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:04,768 INFO L87 Difference]: Start difference. First operand 869 states and 1217 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:06,225 INFO L93 Difference]: Finished difference Result 898 states and 1244 transitions. [2021-11-07 07:24:06,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:24:06,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-07 07:24:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:06,233 INFO L225 Difference]: With dead ends: 898 [2021-11-07 07:24:06,234 INFO L226 Difference]: Without dead ends: 898 [2021-11-07 07:24:06,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-07 07:24:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 865. [2021-11-07 07:24:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 624 states have (on average 1.8782051282051282) internal successors, (1172), 851 states have internal predecessors, (1172), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1209 transitions. [2021-11-07 07:24:06,268 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1209 transitions. Word has length 31 [2021-11-07 07:24:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:06,269 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1209 transitions. [2021-11-07 07:24:06,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:06,270 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1209 transitions. [2021-11-07 07:24:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 07:24:06,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:06,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:06,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:06,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:06,486 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash 460749561, now seen corresponding path program 1 times [2021-11-07 07:24:06,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:06,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503933931] [2021-11-07 07:24:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:06,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:06,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:06,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:06,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 07:24:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:06,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:24:06,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:06,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:24:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:07,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:07,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:07,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503933931] [2021-11-07 07:24:07,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503933931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:07,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:07,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:24:07,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899041176] [2021-11-07 07:24:07,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:24:07,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:24:07,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:24:07,510 INFO L87 Difference]: Start difference. First operand 865 states and 1209 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:12,079 INFO L93 Difference]: Finished difference Result 945 states and 1262 transitions. [2021-11-07 07:24:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:24:12,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-07 07:24:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:12,086 INFO L225 Difference]: With dead ends: 945 [2021-11-07 07:24:12,087 INFO L226 Difference]: Without dead ends: 945 [2021-11-07 07:24:12,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:24:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-07 07:24:12,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 861. [2021-11-07 07:24:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 624 states have (on average 1.8653846153846154) internal successors, (1164), 847 states have internal predecessors, (1164), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:12,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1201 transitions. [2021-11-07 07:24:12,115 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1201 transitions. Word has length 31 [2021-11-07 07:24:12,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:12,123 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1201 transitions. [2021-11-07 07:24:12,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1201 transitions. [2021-11-07 07:24:12,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 07:24:12,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:12,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:12,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:12,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:12,348 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1828330934, now seen corresponding path program 1 times [2021-11-07 07:24:12,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:12,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684667696] [2021-11-07 07:24:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:12,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:12,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:12,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 07:24:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:12,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:12,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:12,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:12,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:12,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684667696] [2021-11-07 07:24:12,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684667696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:12,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:12,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:24:12,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852331897] [2021-11-07 07:24:12,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:12,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:12,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:12,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:12,974 INFO L87 Difference]: Start difference. First operand 861 states and 1201 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:13,037 INFO L93 Difference]: Finished difference Result 849 states and 1181 transitions. [2021-11-07 07:24:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-07 07:24:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:13,046 INFO L225 Difference]: With dead ends: 849 [2021-11-07 07:24:13,046 INFO L226 Difference]: Without dead ends: 849 [2021-11-07 07:24:13,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-07 07:24:13,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-11-07 07:24:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 612 states have (on average 1.869281045751634) internal successors, (1144), 835 states have internal predecessors, (1144), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1181 transitions. [2021-11-07 07:24:13,076 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1181 transitions. Word has length 46 [2021-11-07 07:24:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:13,077 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 1181 transitions. [2021-11-07 07:24:13,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1181 transitions. [2021-11-07 07:24:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 07:24:13,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:13,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:13,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:13,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:13,300 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash -850731138, now seen corresponding path program 1 times [2021-11-07 07:24:13,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:13,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616844664] [2021-11-07 07:24:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:13,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:13,303 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:13,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 07:24:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:13,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:14,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:14,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:14,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616844664] [2021-11-07 07:24:14,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616844664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:14,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:14,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:24:14,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268758412] [2021-11-07 07:24:14,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:24:14,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:24:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:24:14,568 INFO L87 Difference]: Start difference. First operand 849 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:14,664 INFO L93 Difference]: Finished difference Result 799 states and 1076 transitions. [2021-11-07 07:24:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:24:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-07 07:24:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:14,673 INFO L225 Difference]: With dead ends: 799 [2021-11-07 07:24:14,673 INFO L226 Difference]: Without dead ends: 799 [2021-11-07 07:24:14,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:24:14,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-07 07:24:14,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2021-11-07 07:24:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 562 states have (on average 1.8487544483985765) internal successors, (1039), 785 states have internal predecessors, (1039), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1076 transitions. [2021-11-07 07:24:14,697 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1076 transitions. Word has length 54 [2021-11-07 07:24:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:14,700 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1076 transitions. [2021-11-07 07:24:14,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1076 transitions. [2021-11-07 07:24:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:24:14,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:14,702 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:14,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:14,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:14,915 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash 363306019, now seen corresponding path program 1 times [2021-11-07 07:24:14,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:14,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803710906] [2021-11-07 07:24:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:14,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:14,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:14,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:14,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 07:24:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:15,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:24:15,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:15,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:24:15,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:24:16,218 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:24:16,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-07 07:24:16,231 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:24:16,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-07 07:24:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:16,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:21,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:21,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803710906] [2021-11-07 07:24:21,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803710906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:21,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:21,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:24:21,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016110187] [2021-11-07 07:24:21,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:24:21,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:24:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 07:24:21,442 INFO L87 Difference]: Start difference. First operand 799 states and 1076 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:31,448 INFO L93 Difference]: Finished difference Result 774 states and 1014 transitions. [2021-11-07 07:24:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:24:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-07 07:24:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:31,454 INFO L225 Difference]: With dead ends: 774 [2021-11-07 07:24:31,455 INFO L226 Difference]: Without dead ends: 774 [2021-11-07 07:24:31,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 07:24:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-07 07:24:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 729. [2021-11-07 07:24:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 530 states have (on average 1.6924528301886792) internal successors, (897), 715 states have internal predecessors, (897), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 934 transitions. [2021-11-07 07:24:31,475 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 934 transitions. Word has length 57 [2021-11-07 07:24:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:31,476 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 934 transitions. [2021-11-07 07:24:31,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 934 transitions. [2021-11-07 07:24:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:24:31,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:31,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:31,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 07:24:31,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:31,709 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:31,710 INFO L85 PathProgramCache]: Analyzing trace with hash -582487087, now seen corresponding path program 1 times [2021-11-07 07:24:31,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:31,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551292944] [2021-11-07 07:24:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:31,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:31,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:31,712 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:31,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 07:24:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:32,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:24:32,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:32,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:24:32,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-07 07:24:32,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-07 07:24:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:32,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:32,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:32,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551292944] [2021-11-07 07:24:32,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551292944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:32,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:32,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:24:32,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016711897] [2021-11-07 07:24:32,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:24:32,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:24:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:32,633 INFO L87 Difference]: Start difference. First operand 729 states and 934 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:34,720 INFO L93 Difference]: Finished difference Result 728 states and 932 transitions. [2021-11-07 07:24:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:24:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 07:24:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:34,725 INFO L225 Difference]: With dead ends: 728 [2021-11-07 07:24:34,725 INFO L226 Difference]: Without dead ends: 728 [2021-11-07 07:24:34,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:24:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-07 07:24:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-11-07 07:24:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 530 states have (on average 1.6886792452830188) internal successors, (895), 714 states have internal predecessors, (895), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 932 transitions. [2021-11-07 07:24:34,748 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 932 transitions. Word has length 62 [2021-11-07 07:24:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:34,749 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 932 transitions. [2021-11-07 07:24:34,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 932 transitions. [2021-11-07 07:24:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:24:34,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:34,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:34,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 07:24:34,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:34,969 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:34,969 INFO L85 PathProgramCache]: Analyzing trace with hash -582487086, now seen corresponding path program 1 times [2021-11-07 07:24:34,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:34,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928711497] [2021-11-07 07:24:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:34,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:34,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:34,972 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:34,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 07:24:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:35,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:24:35,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:35,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:24:35,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 07:24:35,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-07 07:24:35,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-07 07:24:35,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-07 07:24:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:35,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:36,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:36,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928711497] [2021-11-07 07:24:36,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928711497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:36,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:36,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 07:24:36,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656787890] [2021-11-07 07:24:36,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:24:36,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:36,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:24:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:24:36,186 INFO L87 Difference]: Start difference. First operand 728 states and 932 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:41,564 INFO L93 Difference]: Finished difference Result 727 states and 930 transitions. [2021-11-07 07:24:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:24:41,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 07:24:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:41,569 INFO L225 Difference]: With dead ends: 727 [2021-11-07 07:24:41,569 INFO L226 Difference]: Without dead ends: 727 [2021-11-07 07:24:41,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:24:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-07 07:24:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-07 07:24:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 528 states have (on average 1.691287878787879) internal successors, (893), 713 states have internal predecessors, (893), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 930 transitions. [2021-11-07 07:24:41,591 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 930 transitions. Word has length 62 [2021-11-07 07:24:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:41,592 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 930 transitions. [2021-11-07 07:24:41,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 930 transitions. [2021-11-07 07:24:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 07:24:41,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:41,593 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:41,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:41,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:41,808 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:41,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1992122424, now seen corresponding path program 1 times [2021-11-07 07:24:41,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:41,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689525399] [2021-11-07 07:24:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:41,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:41,811 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:41,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 07:24:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:42,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:42,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:42,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:42,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:42,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689525399] [2021-11-07 07:24:42,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689525399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:42,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:42,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:24:42,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775253863] [2021-11-07 07:24:42,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:24:42,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:24:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:24:42,835 INFO L87 Difference]: Start difference. First operand 727 states and 930 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:42,944 INFO L93 Difference]: Finished difference Result 737 states and 944 transitions. [2021-11-07 07:24:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:24:42,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-07 07:24:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:42,956 INFO L225 Difference]: With dead ends: 737 [2021-11-07 07:24:42,956 INFO L226 Difference]: Without dead ends: 737 [2021-11-07 07:24:42,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:24:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-07 07:24:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-11-07 07:24:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 536 states have (on average 1.6884328358208955) internal successors, (905), 722 states have internal predecessors, (905), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:24:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 944 transitions. [2021-11-07 07:24:42,982 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 944 transitions. Word has length 70 [2021-11-07 07:24:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:42,983 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 944 transitions. [2021-11-07 07:24:42,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:42,983 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 944 transitions. [2021-11-07 07:24:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:24:42,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:42,985 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:43,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:43,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:43,200 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -616502664, now seen corresponding path program 1 times [2021-11-07 07:24:43,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:43,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877571927] [2021-11-07 07:24:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:43,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:43,202 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:43,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 07:24:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:43,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:24:43,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:43,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:44,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:44,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877571927] [2021-11-07 07:24:44,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877571927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:24:44,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:44,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-07 07:24:44,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286635555] [2021-11-07 07:24:44,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:24:44,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:24:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:24:44,300 INFO L87 Difference]: Start difference. First operand 737 states and 944 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:44,862 INFO L93 Difference]: Finished difference Result 751 states and 964 transitions. [2021-11-07 07:24:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:24:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-07 07:24:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:44,870 INFO L225 Difference]: With dead ends: 751 [2021-11-07 07:24:44,871 INFO L226 Difference]: Without dead ends: 747 [2021-11-07 07:24:44,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:24:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-07 07:24:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 743. [2021-11-07 07:24:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 542 states have (on average 1.6845018450184501) internal successors, (913), 728 states have internal predecessors, (913), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:24:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 952 transitions. [2021-11-07 07:24:44,906 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 952 transitions. Word has length 72 [2021-11-07 07:24:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:44,907 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 952 transitions. [2021-11-07 07:24:44,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 952 transitions. [2021-11-07 07:24:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 07:24:44,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:44,916 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:44,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:45,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:45,133 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 876564216, now seen corresponding path program 2 times [2021-11-07 07:24:45,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:45,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315406109] [2021-11-07 07:24:45,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:24:45,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:45,136 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:45,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 07:24:45,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:24:45,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:45,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:24:45,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:46,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:46,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:46,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315406109] [2021-11-07 07:24:46,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315406109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:24:46,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:46,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 07:24:46,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106012194] [2021-11-07 07:24:46,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:24:46,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:46,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:24:46,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:24:46,786 INFO L87 Difference]: Start difference. First operand 743 states and 952 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:48,567 INFO L93 Difference]: Finished difference Result 771 states and 996 transitions. [2021-11-07 07:24:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 07:24:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-07 07:24:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:48,574 INFO L225 Difference]: With dead ends: 771 [2021-11-07 07:24:48,574 INFO L226 Difference]: Without dead ends: 767 [2021-11-07 07:24:48,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:24:48,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-11-07 07:24:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 755. [2021-11-07 07:24:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 554 states have (on average 1.6768953068592058) internal successors, (929), 740 states have internal predecessors, (929), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:24:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 968 transitions. [2021-11-07 07:24:48,609 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 968 transitions. Word has length 76 [2021-11-07 07:24:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:48,610 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 968 transitions. [2021-11-07 07:24:48,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 968 transitions. [2021-11-07 07:24:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 07:24:48,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:48,612 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:48,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:48,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:48,831 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1089906696, now seen corresponding path program 3 times [2021-11-07 07:24:48,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:48,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93541603] [2021-11-07 07:24:48,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:24:48,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:48,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:48,834 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:48,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 07:24:50,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 07:24:50,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:50,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:24:50,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:50,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:53,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:53,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93541603] [2021-11-07 07:24:53,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93541603] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:24:53,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:53,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-07 07:24:53,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64813991] [2021-11-07 07:24:53,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:24:53,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:53,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:24:53,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:24:53,088 INFO L87 Difference]: Start difference. First operand 755 states and 968 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:02,531 INFO L93 Difference]: Finished difference Result 811 states and 1072 transitions. [2021-11-07 07:25:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:25:02,532 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-07 07:25:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:02,538 INFO L225 Difference]: With dead ends: 811 [2021-11-07 07:25:02,538 INFO L226 Difference]: Without dead ends: 805 [2021-11-07 07:25:02,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:25:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-07 07:25:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 779. [2021-11-07 07:25:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 578 states have (on average 1.6608996539792387) internal successors, (960), 764 states have internal predecessors, (960), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:25:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 999 transitions. [2021-11-07 07:25:02,573 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 999 transitions. Word has length 84 [2021-11-07 07:25:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:02,574 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 999 transitions. [2021-11-07 07:25:02,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 999 transitions. [2021-11-07 07:25:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 07:25:02,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:02,576 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:02,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:02,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:25:02,794 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:25:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash -145593864, now seen corresponding path program 4 times [2021-11-07 07:25:02,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:25:02,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225576578] [2021-11-07 07:25:02,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:25:02,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:25:02,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:25:02,798 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:25:02,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 07:25:03,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:25:03,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:03,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:25:03,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:05,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:25:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:10,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:25:10,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225576578] [2021-11-07 07:25:10,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225576578] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:25:10,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:10,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 07:25:10,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141850966] [2021-11-07 07:25:10,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:25:10,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:25:10,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:25:10,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:25:10,208 INFO L87 Difference]: Start difference. First operand 779 states and 999 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:26,131 INFO L93 Difference]: Finished difference Result 871 states and 1148 transitions. [2021-11-07 07:25:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 07:25:26,132 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-07 07:25:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:26,138 INFO L225 Difference]: With dead ends: 871 [2021-11-07 07:25:26,139 INFO L226 Difference]: Without dead ends: 867 [2021-11-07 07:25:26,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 07:25:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-07 07:25:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 809. [2021-11-07 07:25:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 608 states have (on average 1.6546052631578947) internal successors, (1006), 794 states have internal predecessors, (1006), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:25:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1045 transitions. [2021-11-07 07:25:26,178 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1045 transitions. Word has length 100 [2021-11-07 07:25:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:26,179 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1045 transitions. [2021-11-07 07:25:26,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1045 transitions. [2021-11-07 07:25:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 07:25:26,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:26,181 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:26,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 07:25:26,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:25:26,404 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:25:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash 841634232, now seen corresponding path program 5 times [2021-11-07 07:25:26,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:25:26,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021929191] [2021-11-07 07:25:26,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:25:26,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:25:26,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:25:26,407 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:25:26,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0cef7a6-71bc-4ebf-8d85-d89b3f443941/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 07:25:28,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-07 07:25:28,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:28,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 07:25:28,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:28,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:25:28,698 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 07:25:28,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-07 07:25:28,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-07 07:25:29,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30