./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX --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 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:33:22,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:33:22,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:33:22,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:33:22,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:33:22,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:33:22,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:33:22,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:33:22,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:33:22,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:33:22,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:33:22,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:33:22,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:33:22,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:33:22,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:33:22,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:33:22,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:33:22,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:33:22,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:33:23,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:33:23,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:33:23,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:33:23,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:33:23,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:33:23,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:33:23,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:33:23,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:33:23,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:33:23,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:33:23,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:33:23,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:33:23,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:33:23,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:33:23,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:33:23,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:33:23,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:33:23,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:33:23,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:33:23,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:33:23,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:33:23,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:33:23,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:33:23,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:33:23,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:33:23,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:33:23,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:33:23,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:33:23,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:33:23,088 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:33:23,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:33:23,089 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:33:23,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:33:23,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:33:23,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:33:23,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:33:23,091 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:33:23,091 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:33:23,091 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:33:23,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:33:23,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:33:23,092 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:33:23,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:33:23,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:33:23,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:33:23,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:33:23,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:33:23,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:33:23,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:33:23,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:33:23,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:33:23,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:33:23,096 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_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2021-11-09 08:33:23,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:33:23,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:33:23,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:33:23,437 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:33:23,438 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:33:23,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-09 08:33:23,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/22a95feda/4bc5009a73cd40428b13ad6c5d65b000/FLAGf502d959b [2021-11-09 08:33:24,094 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:33:24,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-09 08:33:24,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/22a95feda/4bc5009a73cd40428b13ad6c5d65b000/FLAGf502d959b [2021-11-09 08:33:24,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/22a95feda/4bc5009a73cd40428b13ad6c5d65b000 [2021-11-09 08:33:24,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:33:24,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:33:24,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:33:24,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:33:24,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:33:24,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:24" (1/1) ... [2021-11-09 08:33:24,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34153bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:24, skipping insertion in model container [2021-11-09 08:33:24,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:24" (1/1) ... [2021-11-09 08:33:24,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:33:24,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:33:24,780 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_bb7fb473-26ae-4bd7-a2c1-125484f2f331/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-09 08:33:24,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:33:24,958 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) [2021-11-09 08:33:24,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6800c75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:24, skipping insertion in model container [2021-11-09 08:33:24,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:33:24,959 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 08:33:24,961 INFO L168 Benchmark]: Toolchain (without parser) took 612.98 ms. Allocated memory is still 92.3 MB. Free memory was 71.4 MB in the beginning and 57.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:33:24,962 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:33:24,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.31 ms. Allocated memory is still 92.3 MB. Free memory was 71.0 MB in the beginning and 57.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:33:24,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 609.31 ms. Allocated memory is still 92.3 MB. Free memory was 71.0 MB in the beginning and 57.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX --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 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:33:27,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:33:27,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:33:27,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:33:27,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:33:27,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:33:27,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:33:27,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:33:27,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:33:27,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:33:27,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:33:27,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:33:27,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:33:27,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:33:27,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:33:27,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:33:27,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:33:27,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:33:27,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:33:27,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:33:27,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:33:27,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:33:27,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:33:27,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:33:27,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:33:27,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:33:27,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:33:27,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:33:27,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:33:27,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:33:27,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:33:27,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:33:27,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:33:27,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:33:27,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:33:27,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:33:27,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:33:27,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:33:27,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:33:27,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:33:27,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:33:27,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 08:33:27,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:33:27,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:33:27,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:33:27,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:33:27,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:33:27,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:33:27,265 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:33:27,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:33:27,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:33:27,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:33:27,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:33:27,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:33:27,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:33:27,267 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:33:27,268 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:33:27,268 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:33:27,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:33:27,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:33:27,268 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:33:27,268 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:33:27,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:33:27,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:33:27,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:33:27,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:33:27,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:33:27,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:33:27,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:33:27,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:33:27,270 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:33:27,271 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:33:27,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:33:27,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:33:27,271 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_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2021-11-09 08:33:27,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:33:27,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:33:27,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:33:27,656 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:33:27,657 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:33:27,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-09 08:33:27,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/6b7771b94/3bde1ddf8fd04d5dacfe6486097d86c1/FLAG9de7389f8 [2021-11-09 08:33:28,417 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:33:28,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2021-11-09 08:33:28,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/6b7771b94/3bde1ddf8fd04d5dacfe6486097d86c1/FLAG9de7389f8 [2021-11-09 08:33:28,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/data/6b7771b94/3bde1ddf8fd04d5dacfe6486097d86c1 [2021-11-09 08:33:28,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:33:28,612 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:33:28,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:33:28,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:33:28,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:33:28,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:28" (1/1) ... [2021-11-09 08:33:28,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23774fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:28, skipping insertion in model container [2021-11-09 08:33:28,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:28" (1/1) ... [2021-11-09 08:33:28,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:33:28,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:33:29,147 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_bb7fb473-26ae-4bd7-a2c1-125484f2f331/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-09 08:33:29,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:33:29,309 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 08:33:29,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:33:29,350 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_bb7fb473-26ae-4bd7-a2c1-125484f2f331/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-09 08:33:29,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:33:29,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:33:29,497 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_bb7fb473-26ae-4bd7-a2c1-125484f2f331/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i[33021,33034] [2021-11-09 08:33:29,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:33:29,618 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:33:29,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29 WrapperNode [2021-11-09 08:33:29,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:33:29,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:33:29,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:33:29,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:33:29,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:33:29,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:33:29,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:33:29,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:33:29,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (1/1) ... [2021-11-09 08:33:29,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:33:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:33:29,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:33:29,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:33:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:33:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:33:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:33:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 08:33:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 08:33:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 08:33:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 08:33:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 08:33:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:33:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 08:33:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 08:33:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:33:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 08:33:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 08:33:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 08:33:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 08:33:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 08:33:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 08:33:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 08:33:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 08:33:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 08:33:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 08:33:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 08:33:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 08:33:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 08:33:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 08:33:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 08:33:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 08:33:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 08:33:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 08:33:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 08:33:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 08:33:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 08:33:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 08:33:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 08:33:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 08:33:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 08:33:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 08:33:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 08:33:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 08:33:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 08:33:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 08:33:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 08:33:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 08:33:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 08:33:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 08:33:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 08:33:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 08:33:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 08:33:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 08:33:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 08:33:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 08:33:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 08:33:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 08:33:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 08:33:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 08:33:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 08:33:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 08:33:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 08:33:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 08:33:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 08:33:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 08:33:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 08:33:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 08:33:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:33:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:33:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:33:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:33:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:33:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:33:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:33:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:33:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:33:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:33:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:33:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:33:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:33:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:33:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:33:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:33:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 08:33:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 08:33:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 08:33:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 08:33:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 08:33:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:33:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:33:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:33:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:33:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:33:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:33:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:33:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:33:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:33:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:33:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:33:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:33:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:33:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:33:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:33:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:33:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:33:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:33:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:33:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:33:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:33:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:33:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:33:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:33:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:33:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:33:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:33:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:33:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:33:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:33:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:33:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:33:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:33:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:33:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:33:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:33:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:33:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:33:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:33:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:33:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:33:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:33:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:33:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:33:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:33:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:33:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:33:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:33:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:33:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:33:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:33:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:33:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:33:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:33:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:33:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:33:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:33:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:33:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:33:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:33:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:33:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:33:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:33:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:33:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:33:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:33:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:33:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:33:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:33:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:33:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:33:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:33:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:33:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:33:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:33:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:33:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:33:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:33:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:33:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:33:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:33:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:33:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:33:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:33:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:33:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:33:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:33:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:33:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:33:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:33:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:33:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 08:33:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 08:33:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:33:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:33:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 08:33:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 08:33:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:33:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:33:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 08:33:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:33:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 08:33:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:33:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:33:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:33:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:33:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 08:33:30,488 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 08:33:35,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:33:35,447 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-09 08:33:35,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:33:35 BoogieIcfgContainer [2021-11-09 08:33:35,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:33:35,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:33:35,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:33:35,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:33:35,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:33:28" (1/3) ... [2021-11-09 08:33:35,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cd10dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:33:35, skipping insertion in model container [2021-11-09 08:33:35,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:29" (2/3) ... [2021-11-09 08:33:35,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cd10dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:33:35, skipping insertion in model container [2021-11-09 08:33:35,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:33:35" (3/3) ... [2021-11-09 08:33:35,458 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2021-11-09 08:33:35,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:33:35,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-09 08:33:35,505 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:33:35,511 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 [2021-11-09 08:33:35,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-09 08:33:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 08:33:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 08:33:35,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:35,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:35,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1382358025, now seen corresponding path program 1 times [2021-11-09 08:33:35,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:35,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824041888] [2021-11-09 08:33:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:35,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:35,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:35,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:33:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:35,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 08:33:35,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:35,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:35,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:35,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824041888] [2021-11-09 08:33:35,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824041888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:35,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:35,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:33:35,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276217100] [2021-11-09 08:33:35,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:33:35,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:36,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:33:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:33:36,030 INFO L87 Difference]: Start difference. First operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) 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) [2021-11-09 08:33:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:36,145 INFO L93 Difference]: Finished difference Result 1264 states and 1338 transitions. [2021-11-09 08:33:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:33:36,146 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 [2021-11-09 08:33:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:36,191 INFO L225 Difference]: With dead ends: 1264 [2021-11-09 08:33:36,192 INFO L226 Difference]: Without dead ends: 1261 [2021-11-09 08:33:36,194 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 [2021-11-09 08:33:36,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-11-09 08:33:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2021-11-09 08:33:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 606 states have (on average 2.1419141914191417) internal successors, (1298), 1247 states have internal predecessors, (1298), 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) [2021-11-09 08:33:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1335 transitions. [2021-11-09 08:33:36,314 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1335 transitions. Word has length 9 [2021-11-09 08:33:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:36,314 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 1335 transitions. [2021-11-09 08:33:36,315 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) [2021-11-09 08:33:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1335 transitions. [2021-11-09 08:33:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 08:33:36,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:36,321 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:36,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:36,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:33:36,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357963, now seen corresponding path program 1 times [2021-11-09 08:33:36,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:36,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664783529] [2021-11-09 08:33:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:36,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:36,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:36,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:33:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:36,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:33:36,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:36,799 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 [2021-11-09 08:33:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:36,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:36,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:36,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664783529] [2021-11-09 08:33:36,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664783529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:36,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:36,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:33:36,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051091248] [2021-11-09 08:33:36,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:36,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:36,868 INFO L87 Difference]: Start difference. First operand 1261 states and 1335 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) [2021-11-09 08:33:39,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:39,363 INFO L93 Difference]: Finished difference Result 1298 states and 1385 transitions. [2021-11-09 08:33:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:39,363 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 [2021-11-09 08:33:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:39,371 INFO L225 Difference]: With dead ends: 1298 [2021-11-09 08:33:39,371 INFO L226 Difference]: Without dead ends: 1298 [2021-11-09 08:33:39,372 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 [2021-11-09 08:33:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-09 08:33:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1244. [2021-11-09 08:33:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 682 states have (on average 1.964809384164223) internal successors, (1340), 1230 states have internal predecessors, (1340), 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) [2021-11-09 08:33:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1377 transitions. [2021-11-09 08:33:39,413 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1377 transitions. Word has length 9 [2021-11-09 08:33:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:39,413 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1377 transitions. [2021-11-09 08:33:39,413 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) [2021-11-09 08:33:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1377 transitions. [2021-11-09 08:33:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 08:33:39,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:39,414 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:39,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:39,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:33:39,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:39,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357962, now seen corresponding path program 1 times [2021-11-09 08:33:39,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:39,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024609983] [2021-11-09 08:33:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:39,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:39,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:33:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:39,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:33:39,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:39,860 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 [2021-11-09 08:33:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:39,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:39,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:39,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024609983] [2021-11-09 08:33:39,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024609983] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:39,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:39,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:33:39,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480154573] [2021-11-09 08:33:39,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:33:39,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:33:39,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:33:39,981 INFO L87 Difference]: Start difference. First operand 1244 states and 1377 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) [2021-11-09 08:33:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:45,661 INFO L93 Difference]: Finished difference Result 1598 states and 1752 transitions. [2021-11-09 08:33:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:33:45,662 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 [2021-11-09 08:33:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:45,672 INFO L225 Difference]: With dead ends: 1598 [2021-11-09 08:33:45,672 INFO L226 Difference]: Without dead ends: 1598 [2021-11-09 08:33:45,672 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 [2021-11-09 08:33:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-11-09 08:33:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1400. [2021-11-09 08:33:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 848 states have (on average 1.9410377358490567) internal successors, (1646), 1386 states have internal predecessors, (1646), 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) [2021-11-09 08:33:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1683 transitions. [2021-11-09 08:33:45,728 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1683 transitions. Word has length 9 [2021-11-09 08:33:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:45,728 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 1683 transitions. [2021-11-09 08:33:45,729 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) [2021-11-09 08:33:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1683 transitions. [2021-11-09 08:33:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 08:33:45,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:45,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:45,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:45,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:33:45,944 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash 98263510, now seen corresponding path program 1 times [2021-11-09 08:33:45,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:45,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511734466] [2021-11-09 08:33:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:45,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:45,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:45,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:45,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:33:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:46,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:33:46,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:46,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:46,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:46,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511734466] [2021-11-09 08:33:46,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511734466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:46,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:46,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:33:46,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067854028] [2021-11-09 08:33:46,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:33:46,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:33:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:33:46,252 INFO L87 Difference]: Start difference. First operand 1400 states and 1683 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) [2021-11-09 08:33:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:46,408 INFO L93 Difference]: Finished difference Result 2745 states and 3291 transitions. [2021-11-09 08:33:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:33:46,409 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 [2021-11-09 08:33:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:46,425 INFO L225 Difference]: With dead ends: 2745 [2021-11-09 08:33:46,426 INFO L226 Difference]: Without dead ends: 2745 [2021-11-09 08:33:46,426 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 [2021-11-09 08:33:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-09 08:33:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2216. [2021-11-09 08:33:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1664 states have (on average 1.9483173076923077) internal successors, (3242), 2196 states have internal predecessors, (3242), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 08:33:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3291 transitions. [2021-11-09 08:33:46,529 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3291 transitions. Word has length 10 [2021-11-09 08:33:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:46,529 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 3291 transitions. [2021-11-09 08:33:46,530 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) [2021-11-09 08:33:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3291 transitions. [2021-11-09 08:33:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:33:46,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:46,531 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:46,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:46,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:33:46,742 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1364426047, now seen corresponding path program 1 times [2021-11-09 08:33:46,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:46,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222641857] [2021-11-09 08:33:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:46,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:46,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:46,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:46,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:33:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:46,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:33:46,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:47,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:47,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:47,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222641857] [2021-11-09 08:33:47,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222641857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:47,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:47,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:33:47,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654881787] [2021-11-09 08:33:47,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:33:47,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:33:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:33:47,103 INFO L87 Difference]: Start difference. First operand 2216 states and 3291 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) [2021-11-09 08:33:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:47,154 INFO L93 Difference]: Finished difference Result 2156 states and 3205 transitions. [2021-11-09 08:33:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:47,154 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 [2021-11-09 08:33:47,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:47,171 INFO L225 Difference]: With dead ends: 2156 [2021-11-09 08:33:47,171 INFO L226 Difference]: Without dead ends: 2156 [2021-11-09 08:33:47,172 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 [2021-11-09 08:33:47,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-11-09 08:33:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2156. [2021-11-09 08:33:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1628 states have (on average 1.9385749385749387) internal successors, (3156), 2136 states have internal predecessors, (3156), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 08:33:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3205 transitions. [2021-11-09 08:33:47,241 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3205 transitions. Word has length 15 [2021-11-09 08:33:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:47,241 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3205 transitions. [2021-11-09 08:33:47,242 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) [2021-11-09 08:33:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3205 transitions. [2021-11-09 08:33:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:33:47,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:47,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:47,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:47,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:33:47,455 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1248405209, now seen corresponding path program 1 times [2021-11-09 08:33:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:47,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828815062] [2021-11-09 08:33:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:47,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:47,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:47,458 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:47,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:33:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:47,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:33:47,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:47,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:47,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:47,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828815062] [2021-11-09 08:33:47,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828815062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:47,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:47,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 08:33:47,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724238508] [2021-11-09 08:33:47,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:33:47,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:33:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:33:47,827 INFO L87 Difference]: Start difference. First operand 2156 states and 3205 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) [2021-11-09 08:33:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:47,921 INFO L93 Difference]: Finished difference Result 2128 states and 3149 transitions. [2021-11-09 08:33:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:33:47,921 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 [2021-11-09 08:33:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:47,934 INFO L225 Difference]: With dead ends: 2128 [2021-11-09 08:33:47,935 INFO L226 Difference]: Without dead ends: 2128 [2021-11-09 08:33:47,935 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 [2021-11-09 08:33:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-09 08:33:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2126. [2021-11-09 08:33:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1612 states have (on average 1.9218362282878412) internal successors, (3098), 2106 states have internal predecessors, (3098), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 08:33:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3147 transitions. [2021-11-09 08:33:48,025 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3147 transitions. Word has length 17 [2021-11-09 08:33:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:48,026 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 3147 transitions. [2021-11-09 08:33:48,026 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) [2021-11-09 08:33:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3147 transitions. [2021-11-09 08:33:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 08:33:48,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:48,028 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] [2021-11-09 08:33:48,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:48,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:33:48,241 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711161, now seen corresponding path program 1 times [2021-11-09 08:33:48,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:48,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246755875] [2021-11-09 08:33:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:48,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:48,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:48,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 08:33:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:48,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:33:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:48,520 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 [2021-11-09 08:33:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:48,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:48,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:48,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246755875] [2021-11-09 08:33:48,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246755875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:48,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:48,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:33:48,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435490295] [2021-11-09 08:33:48,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:33:48,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:48,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:33:48,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:33:48,769 INFO L87 Difference]: Start difference. First operand 2126 states and 3147 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) [2021-11-09 08:33:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:51,928 INFO L93 Difference]: Finished difference Result 2754 states and 3940 transitions. [2021-11-09 08:33:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:33:51,928 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 [2021-11-09 08:33:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:51,943 INFO L225 Difference]: With dead ends: 2754 [2021-11-09 08:33:51,944 INFO L226 Difference]: Without dead ends: 2754 [2021-11-09 08:33:51,944 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 [2021-11-09 08:33:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-09 08:33:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2122. [2021-11-09 08:33:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1612 states have (on average 1.9168734491315136) internal successors, (3090), 2102 states have internal predecessors, (3090), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 08:33:52,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3139 transitions. [2021-11-09 08:33:52,010 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3139 transitions. Word has length 31 [2021-11-09 08:33:52,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:52,011 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3139 transitions. [2021-11-09 08:33:52,011 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) [2021-11-09 08:33:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3139 transitions. [2021-11-09 08:33:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 08:33:52,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:52,013 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] [2021-11-09 08:33:52,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:33:52,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:33:52,225 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:33:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711160, now seen corresponding path program 1 times [2021-11-09 08:33:52,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:33:52,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941837192] [2021-11-09 08:33:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:52,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:33:52,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:33:52,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:33:52,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 08:33:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:52,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:33:52,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:33:52,523 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 [2021-11-09 08:33:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:52,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:33:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:53,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:33:53,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941837192] [2021-11-09 08:33:53,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941837192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:53,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:53,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:33:53,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925914307] [2021-11-09 08:33:53,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:33:53,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:33:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:33:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:33:53,252 INFO L87 Difference]: Start difference. First operand 2122 states and 3139 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) [2021-11-09 08:34:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:01,769 INFO L93 Difference]: Finished difference Result 2375 states and 3288 transitions. [2021-11-09 08:34:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:34:01,770 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 [2021-11-09 08:34:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:01,782 INFO L225 Difference]: With dead ends: 2375 [2021-11-09 08:34:01,782 INFO L226 Difference]: Without dead ends: 2375 [2021-11-09 08:34:01,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:01,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-09 08:34:01,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2118. [2021-11-09 08:34:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1612 states have (on average 1.911910669975186) internal successors, (3082), 2098 states have internal predecessors, (3082), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 08:34:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3131 transitions. [2021-11-09 08:34:01,837 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3131 transitions. Word has length 31 [2021-11-09 08:34:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:01,838 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 3131 transitions. [2021-11-09 08:34:01,838 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) [2021-11-09 08:34:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3131 transitions. [2021-11-09 08:34:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 08:34:01,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:01,840 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] [2021-11-09 08:34:01,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:02,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:02,052 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash -189672101, now seen corresponding path program 1 times [2021-11-09 08:34:02,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:02,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797853697] [2021-11-09 08:34:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:02,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:02,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:02,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:02,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 08:34:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:02,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:34:02,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:02,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:02,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:02,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797853697] [2021-11-09 08:34:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797853697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:02,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:02,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:34:02,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042661347] [2021-11-09 08:34:02,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:34:02,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:34:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:34:02,625 INFO L87 Difference]: Start difference. First operand 2118 states and 3131 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) [2021-11-09 08:34:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:02,700 INFO L93 Difference]: Finished difference Result 2106 states and 3111 transitions. [2021-11-09 08:34:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:34:02,701 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 [2021-11-09 08:34:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:02,712 INFO L225 Difference]: With dead ends: 2106 [2021-11-09 08:34:02,712 INFO L226 Difference]: Without dead ends: 2106 [2021-11-09 08:34:02,713 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 [2021-11-09 08:34:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-11-09 08:34:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-11-09 08:34:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1600 states have (on average 1.91375) internal successors, (3062), 2086 states have internal predecessors, (3062), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 08:34:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3111 transitions. [2021-11-09 08:34:02,758 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3111 transitions. Word has length 46 [2021-11-09 08:34:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:02,759 INFO L470 AbstractCegarLoop]: Abstraction has 2106 states and 3111 transitions. [2021-11-09 08:34:02,759 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) [2021-11-09 08:34:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3111 transitions. [2021-11-09 08:34:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 08:34:02,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:02,761 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] [2021-11-09 08:34:02,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:02,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:02,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:02,975 INFO L85 PathProgramCache]: Analyzing trace with hash 568275343, now seen corresponding path program 1 times [2021-11-09 08:34:02,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:02,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557054126] [2021-11-09 08:34:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:02,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:02,976 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:02,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 08:34:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:03,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:34:03,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:03,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:04,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:04,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557054126] [2021-11-09 08:34:04,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557054126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:04,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:04,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:34:04,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427520868] [2021-11-09 08:34:04,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:04,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:04,121 INFO L87 Difference]: Start difference. First operand 2106 states and 3111 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) [2021-11-09 08:34:04,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:04,217 INFO L93 Difference]: Finished difference Result 1922 states and 2756 transitions. [2021-11-09 08:34:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:04,218 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 [2021-11-09 08:34:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:04,231 INFO L225 Difference]: With dead ends: 1922 [2021-11-09 08:34:04,232 INFO L226 Difference]: Without dead ends: 1922 [2021-11-09 08:34:04,232 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 [2021-11-09 08:34:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-09 08:34:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1922. [2021-11-09 08:34:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1416 states have (on average 1.911723163841808) internal successors, (2707), 1902 states have internal predecessors, (2707), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-09 08:34:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2756 transitions. [2021-11-09 08:34:04,305 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2756 transitions. Word has length 54 [2021-11-09 08:34:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:04,307 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 2756 transitions. [2021-11-09 08:34:04,307 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) [2021-11-09 08:34:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2756 transitions. [2021-11-09 08:34:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 08:34:04,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:04,309 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] [2021-11-09 08:34:04,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:04,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:04,522 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1377713038, now seen corresponding path program 1 times [2021-11-09 08:34:04,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:04,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762110739] [2021-11-09 08:34:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:04,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:04,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:04,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 08:34:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:05,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:34:05,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:05,043 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 [2021-11-09 08:34:05,051 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 [2021-11-09 08:34:05,757 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 08:34:05,757 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 28 treesize of output 30 [2021-11-09 08:34:05,764 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 08:34:05,765 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 27 treesize of output 23 [2021-11-09 08:34:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:05,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:12,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:12,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762110739] [2021-11-09 08:34:12,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762110739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:12,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:12,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:34:12,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227132884] [2021-11-09 08:34:12,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:34:12,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:12,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:34:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-09 08:34:12,576 INFO L87 Difference]: Start difference. First operand 1922 states and 2756 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) [2021-11-09 08:34:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:30,489 INFO L93 Difference]: Finished difference Result 2570 states and 3536 transitions. [2021-11-09 08:34:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:34:30,490 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 [2021-11-09 08:34:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:30,502 INFO L225 Difference]: With dead ends: 2570 [2021-11-09 08:34:30,502 INFO L226 Difference]: Without dead ends: 2570 [2021-11-09 08:34:30,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-09 08:34:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-11-09 08:34:30,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2062. [2021-11-09 08:34:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1594 states have (on average 1.858845671267252) internal successors, (2963), 2036 states have internal predecessors, (2963), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-09 08:34:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3024 transitions. [2021-11-09 08:34:30,551 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3024 transitions. Word has length 57 [2021-11-09 08:34:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:30,551 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 3024 transitions. [2021-11-09 08:34:30,552 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) [2021-11-09 08:34:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3024 transitions. [2021-11-09 08:34:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:34:30,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:30,553 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] [2021-11-09 08:34:30,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:30,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:30,774 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:30,774 INFO L85 PathProgramCache]: Analyzing trace with hash 569746658, now seen corresponding path program 1 times [2021-11-09 08:34:30,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:30,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380555499] [2021-11-09 08:34:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:30,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:30,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:30,777 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:30,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 08:34:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:31,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:34:31,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:31,504 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 [2021-11-09 08:34:31,523 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 [2021-11-09 08:34:31,572 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 [2021-11-09 08:34:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:31,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:31,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:31,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380555499] [2021-11-09 08:34:31,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380555499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:31,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:31,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:34:31,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877888813] [2021-11-09 08:34:31,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:34:31,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:34:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:34:31,776 INFO L87 Difference]: Start difference. First operand 2062 states and 3024 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) [2021-11-09 08:34:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:35,949 INFO L93 Difference]: Finished difference Result 2061 states and 3022 transitions. [2021-11-09 08:34:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:34:35,950 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 [2021-11-09 08:34:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:35,961 INFO L225 Difference]: With dead ends: 2061 [2021-11-09 08:34:35,962 INFO L226 Difference]: Without dead ends: 2061 [2021-11-09 08:34:35,962 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 [2021-11-09 08:34:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-11-09 08:34:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2061. [2021-11-09 08:34:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1594 states have (on average 1.857590966122961) internal successors, (2961), 2035 states have internal predecessors, (2961), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-09 08:34:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3022 transitions. [2021-11-09 08:34:36,008 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3022 transitions. Word has length 62 [2021-11-09 08:34:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:36,009 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 3022 transitions. [2021-11-09 08:34:36,009 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) [2021-11-09 08:34:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3022 transitions. [2021-11-09 08:34:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:34:36,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:36,010 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] [2021-11-09 08:34:36,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:36,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:36,225 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash 569746659, now seen corresponding path program 1 times [2021-11-09 08:34:36,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:36,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863447984] [2021-11-09 08:34:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:36,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:36,228 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:36,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 08:34:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:36,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:34:36,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:36,934 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 [2021-11-09 08:34:36,962 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 [2021-11-09 08:34:36,973 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 [2021-11-09 08:34:37,079 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 [2021-11-09 08:34:37,085 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 [2021-11-09 08:34:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:37,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:37,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:37,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863447984] [2021-11-09 08:34:37,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863447984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:37,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:37,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 08:34:37,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016618748] [2021-11-09 08:34:37,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:34:37,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:34:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:34:37,464 INFO L87 Difference]: Start difference. First operand 2061 states and 3022 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) [2021-11-09 08:34:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:48,405 INFO L93 Difference]: Finished difference Result 2060 states and 3020 transitions. [2021-11-09 08:34:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:34:48,406 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 [2021-11-09 08:34:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:48,414 INFO L225 Difference]: With dead ends: 2060 [2021-11-09 08:34:48,415 INFO L226 Difference]: Without dead ends: 2060 [2021-11-09 08:34:48,415 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 [2021-11-09 08:34:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-11-09 08:34:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 2060. [2021-11-09 08:34:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1592 states have (on average 1.8586683417085428) internal successors, (2959), 2034 states have internal predecessors, (2959), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-09 08:34:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3020 transitions. [2021-11-09 08:34:48,466 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3020 transitions. Word has length 62 [2021-11-09 08:34:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:48,467 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 3020 transitions. [2021-11-09 08:34:48,467 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) [2021-11-09 08:34:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3020 transitions. [2021-11-09 08:34:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 08:34:48,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:48,468 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] [2021-11-09 08:34:48,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:48,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:48,682 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2036280663, now seen corresponding path program 1 times [2021-11-09 08:34:48,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:48,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981025463] [2021-11-09 08:34:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:48,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:48,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:48,685 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:48,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 08:34:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:49,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:34:49,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:49,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:49,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:49,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981025463] [2021-11-09 08:34:49,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981025463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:49,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:49,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:34:49,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87192983] [2021-11-09 08:34:49,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:34:49,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:34:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:34:49,613 INFO L87 Difference]: Start difference. First operand 2060 states and 3020 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) [2021-11-09 08:34:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:49,747 INFO L93 Difference]: Finished difference Result 2070 states and 3038 transitions. [2021-11-09 08:34:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:34:49,747 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 [2021-11-09 08:34:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:49,754 INFO L225 Difference]: With dead ends: 2070 [2021-11-09 08:34:49,755 INFO L226 Difference]: Without dead ends: 2070 [2021-11-09 08:34:49,755 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 [2021-11-09 08:34:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-11-09 08:34:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2070. [2021-11-09 08:34:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1600 states have (on average 1.856875) internal successors, (2971), 2043 states have internal predecessors, (2971), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-09 08:34:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3038 transitions. [2021-11-09 08:34:49,800 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3038 transitions. Word has length 70 [2021-11-09 08:34:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:49,801 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 3038 transitions. [2021-11-09 08:34:49,801 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) [2021-11-09 08:34:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3038 transitions. [2021-11-09 08:34:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 08:34:49,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:49,802 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] [2021-11-09 08:34:49,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:50,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:50,017 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1343773079, now seen corresponding path program 1 times [2021-11-09 08:34:50,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:50,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980313663] [2021-11-09 08:34:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:50,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:50,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:50,019 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:50,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 08:34:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:34:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:50,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:51,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:51,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980313663] [2021-11-09 08:34:51,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980313663] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:34:51,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:51,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 08:34:51,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616816603] [2021-11-09 08:34:51,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:34:51,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:34:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:34:51,090 INFO L87 Difference]: Start difference. First operand 2070 states and 3038 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) [2021-11-09 08:34:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:51,627 INFO L93 Difference]: Finished difference Result 2084 states and 3066 transitions. [2021-11-09 08:34:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:34:51,628 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 [2021-11-09 08:34:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:51,635 INFO L225 Difference]: With dead ends: 2084 [2021-11-09 08:34:51,635 INFO L226 Difference]: Without dead ends: 2080 [2021-11-09 08:34:51,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:34:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-09 08:34:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2076. [2021-11-09 08:34:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 1606 states have (on average 1.8549190535491906) internal successors, (2979), 2049 states have internal predecessors, (2979), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-09 08:34:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3046 transitions. [2021-11-09 08:34:51,676 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3046 transitions. Word has length 72 [2021-11-09 08:34:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:51,677 INFO L470 AbstractCegarLoop]: Abstraction has 2076 states and 3046 transitions. [2021-11-09 08:34:51,677 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) [2021-11-09 08:34:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3046 transitions. [2021-11-09 08:34:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 08:34:51,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:51,678 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] [2021-11-09 08:34:51,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:51,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:51,894 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1627356649, now seen corresponding path program 2 times [2021-11-09 08:34:51,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:51,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500209338] [2021-11-09 08:34:51,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:34:51,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:51,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:51,896 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:51,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 08:34:52,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:34:52,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:34:52,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:34:52,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:52,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:53,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:53,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500209338] [2021-11-09 08:34:53,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500209338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:34:53,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:53,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 08:34:53,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013279255] [2021-11-09 08:34:53,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:34:53,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:34:53,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:34:53,507 INFO L87 Difference]: Start difference. First operand 2076 states and 3046 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) [2021-11-09 08:34:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:55,302 INFO L93 Difference]: Finished difference Result 2104 states and 3114 transitions. [2021-11-09 08:34:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 08:34:55,303 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 [2021-11-09 08:34:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:55,310 INFO L225 Difference]: With dead ends: 2104 [2021-11-09 08:34:55,310 INFO L226 Difference]: Without dead ends: 2100 [2021-11-09 08:34:55,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 08:34:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-11-09 08:34:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2088. [2021-11-09 08:34:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1618 states have (on average 1.8510506798516688) internal successors, (2995), 2061 states have internal predecessors, (2995), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-09 08:34:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3062 transitions. [2021-11-09 08:34:55,355 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3062 transitions. Word has length 76 [2021-11-09 08:34:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:55,356 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 3062 transitions. [2021-11-09 08:34:55,356 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) [2021-11-09 08:34:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3062 transitions. [2021-11-09 08:34:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 08:34:55,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:55,357 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] [2021-11-09 08:34:55,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:55,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:55,573 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:34:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash -790106903, now seen corresponding path program 3 times [2021-11-09 08:34:55,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:55,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219620462] [2021-11-09 08:34:55,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:34:55,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:55,575 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:55,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 08:34:56,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 08:34:56,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:34:56,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 08:34:56,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:57,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:59,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:59,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219620462] [2021-11-09 08:34:59,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219620462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:34:59,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:34:59,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 08:34:59,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424034284] [2021-11-09 08:34:59,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 08:34:59,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 08:34:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:34:59,308 INFO L87 Difference]: Start difference. First operand 2088 states and 3062 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) [2021-11-09 08:35:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:09,164 INFO L93 Difference]: Finished difference Result 2144 states and 3246 transitions. [2021-11-09 08:35:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 08:35:09,164 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 [2021-11-09 08:35:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:09,170 INFO L225 Difference]: With dead ends: 2144 [2021-11-09 08:35:09,171 INFO L226 Difference]: Without dead ends: 2138 [2021-11-09 08:35:09,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 08:35:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-11-09 08:35:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2112. [2021-11-09 08:35:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1642 states have (on average 1.8428745432399514) internal successors, (3026), 2085 states have internal predecessors, (3026), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-09 08:35:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3093 transitions. [2021-11-09 08:35:09,221 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3093 transitions. Word has length 84 [2021-11-09 08:35:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:09,221 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 3093 transitions. [2021-11-09 08:35:09,222 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) [2021-11-09 08:35:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3093 transitions. [2021-11-09 08:35:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 08:35:09,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:09,223 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] [2021-11-09 08:35:09,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-09 08:35:09,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:35:09,440 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:35:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash -870593815, now seen corresponding path program 4 times [2021-11-09 08:35:09,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:35:09,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085032034] [2021-11-09 08:35:09,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:35:09,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:35:09,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:35:09,442 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:35:09,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 08:35:10,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:35:10,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:35:10,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 08:35:10,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:11,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:35:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:35:16,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:35:16,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085032034] [2021-11-09 08:35:16,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085032034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:35:16,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:35:16,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 08:35:16,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555196967] [2021-11-09 08:35:16,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 08:35:16,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:35:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 08:35:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 08:35:16,133 INFO L87 Difference]: Start difference. First operand 2112 states and 3093 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) [2021-11-09 08:35:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:35:33,916 INFO L93 Difference]: Finished difference Result 2204 states and 3358 transitions. [2021-11-09 08:35:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 08:35:33,916 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 [2021-11-09 08:35:33,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:35:33,921 INFO L225 Difference]: With dead ends: 2204 [2021-11-09 08:35:33,922 INFO L226 Difference]: Without dead ends: 2200 [2021-11-09 08:35:33,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 08:35:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2021-11-09 08:35:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 2142. [2021-11-09 08:35:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1672 states have (on average 1.8373205741626795) internal successors, (3072), 2115 states have internal predecessors, (3072), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-09 08:35:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3139 transitions. [2021-11-09 08:35:33,982 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3139 transitions. Word has length 100 [2021-11-09 08:35:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:35:33,983 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 3139 transitions. [2021-11-09 08:35:33,983 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) [2021-11-09 08:35:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3139 transitions. [2021-11-09 08:35:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 08:35:33,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:35:33,984 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] [2021-11-09 08:35:34,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-09 08:35:34,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:35:34,201 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-09 08:35:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:35:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash -22317783, now seen corresponding path program 5 times [2021-11-09 08:35:34,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:35:34,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478997432] [2021-11-09 08:35:34,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:35:34,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:35:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:35:34,203 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:35:34,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7fb473-26ae-4bd7-a2c1-125484f2f331/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 08:35:35,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 08:35:35,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:35:35,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 08:35:35,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:35:35,937 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 [2021-11-09 08:35:36,213 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 08:35:36,214 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 22 treesize of output 29 [2021-11-09 08:35:36,285 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 [2021-11-09 08:35:36,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32