./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU --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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:18:43,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:18:43,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:18:44,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:18:44,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:18:44,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:18:44,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:18:44,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:18:44,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:18:44,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:18:44,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:18:44,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:18:44,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:18:44,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:18:44,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:18:44,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:18:44,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:18:44,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:18:44,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:18:44,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:18:44,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:18:44,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:18:44,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:18:44,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:18:44,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:18:44,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:18:44,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:18:44,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:18:44,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:18:44,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:18:44,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:18:44,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:18:44,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:18:44,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:18:44,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:18:44,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:18:44,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:18:44,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:18:44,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:18:44,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:18:44,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:18:44,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 23:18:44,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:18:44,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:18:44,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:18:44,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:18:44,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:18:44,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:18:44,204 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:18:44,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:18:44,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:18:44,205 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:18:44,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:18:44,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:18:44,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:18:44,206 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 23:18:44,206 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 23:18:44,206 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 23:18:44,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:18:44,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 23:18:44,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:18:44,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:18:44,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:18:44,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:18:44,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:18:44,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:18:44,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:18:44,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:18:44,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:18:44,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:18:44,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:18:44,210 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_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2021-11-02 23:18:44,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:18:44,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:18:44,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:18:44,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:18:44,505 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:18:44,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-02 23:18:44,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/40133105f/c2896840e614478c897cfb2a607e0669/FLAG78c2db47c [2021-11-02 23:18:45,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:18:45,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-02 23:18:45,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/40133105f/c2896840e614478c897cfb2a607e0669/FLAG78c2db47c [2021-11-02 23:18:45,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/40133105f/c2896840e614478c897cfb2a607e0669 [2021-11-02 23:18:45,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:18:45,447 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 23:18:45,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:18:45,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:18:45,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:18:45,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:18:45" (1/1) ... [2021-11-02 23:18:45,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175ec55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:45, skipping insertion in model container [2021-11-02 23:18:45,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:18:45" (1/1) ... [2021-11-02 23:18:45,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:18:45,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:18:46,007 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-02 23:18:46,121 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-02 23:18:46,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:18:46,161 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) [2021-11-02 23:18:46,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@688df745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:46, skipping insertion in model container [2021-11-02 23:18:46,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:18:46,163 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 23:18:46,165 INFO L168 Benchmark]: Toolchain (without parser) took 717.44 ms. Allocated memory is still 83.9 MB. Free memory was 59.3 MB in the beginning and 39.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:18:46,166 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 69.2 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 49.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:18:46,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.24 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 39.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:18:46,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 69.2 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 49.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 712.24 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 39.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU --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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:18:49,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:18:49,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:18:49,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:18:49,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:18:49,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:18:49,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:18:49,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:18:49,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:18:49,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:18:49,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:18:49,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:18:49,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:18:49,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:18:49,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:18:49,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:18:49,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:18:49,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:18:49,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:18:49,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:18:49,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:18:49,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:18:49,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:18:49,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:18:49,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:18:49,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:18:49,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:18:49,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:18:49,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:18:49,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:18:49,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:18:49,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:18:49,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:18:49,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:18:49,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:18:49,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:18:49,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:18:49,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:18:49,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:18:49,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:18:49,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:18:49,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 23:18:49,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:18:49,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:18:49,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:18:49,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:18:49,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:18:49,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:18:49,430 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:18:49,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:18:49,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:18:49,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:18:49,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:18:49,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:18:49,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:18:49,434 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 23:18:49,435 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 23:18:49,435 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 23:18:49,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:18:49,435 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 23:18:49,436 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 23:18:49,436 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 23:18:49,436 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:18:49,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:18:49,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:18:49,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:18:49,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:18:49,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:18:49,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:18:49,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:18:49,438 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 23:18:49,439 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 23:18:49,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:18:49,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 23:18:49,440 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_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2021-11-02 23:18:49,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:18:49,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:18:49,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:18:49,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:18:49,876 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:18:49,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-02 23:18:49,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/344b51d24/5a626aa5c76143779812af6528d13db1/FLAG9ffac2e70 [2021-11-02 23:18:50,872 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:18:50,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2021-11-02 23:18:50,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/344b51d24/5a626aa5c76143779812af6528d13db1/FLAG9ffac2e70 [2021-11-02 23:18:51,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/data/344b51d24/5a626aa5c76143779812af6528d13db1 [2021-11-02 23:18:51,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:18:51,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 23:18:51,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:18:51,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:18:51,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:18:51,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:18:51" (1/1) ... [2021-11-02 23:18:51,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc7bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:51, skipping insertion in model container [2021-11-02 23:18:51,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:18:51" (1/1) ... [2021-11-02 23:18:51,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:18:51,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:18:52,244 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-02 23:18:52,470 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-02 23:18:52,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:18:52,509 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 23:18:52,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:18:52,555 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-02 23:18:52,652 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-02 23:18:52,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:18:52,694 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:18:52,750 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[33021,33034] [2021-11-02 23:18:52,826 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_32149efb-db4f-4f1f-9c6d-597afa947f19/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i[45234,45247] [2021-11-02 23:18:52,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:18:52,900 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:18:52,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52 WrapperNode [2021-11-02 23:18:52,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:18:52,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:18:52,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:18:52,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:18:52,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:52,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:53,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:53,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:53,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:53,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:53,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:53,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:18:53,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:18:53,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:18:53,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:18:53,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (1/1) ... [2021-11-02 23:18:53,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:18:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:18:53,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:18:53,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:18:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 23:18:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:18:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 23:18:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 23:18:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 23:18:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 23:18:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 23:18:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 23:18:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 23:18:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 23:18:53,296 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-02 23:18:53,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 23:18:53,296 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 23:18:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 23:18:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 23:18:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 23:18:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 23:18:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 23:18:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 23:18:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 23:18:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 23:18:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 23:18:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 23:18:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 23:18:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 23:18:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 23:18:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 23:18:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 23:18:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 23:18:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 23:18:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 23:18:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 23:18:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 23:18:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 23:18:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 23:18:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 23:18:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 23:18:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 23:18:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 23:18:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 23:18:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 23:18:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 23:18:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 23:18:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 23:18:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 23:18:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 23:18:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 23:18:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 23:18:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 23:18:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 23:18:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 23:18:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 23:18:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 23:18:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 23:18:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 23:18:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 23:18:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 23:18:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 23:18:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 23:18:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 23:18:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 23:18:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 23:18:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 23:18:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 23:18:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 23:18:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 23:18:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 23:18:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 23:18:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 23:18:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 23:18:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 23:18:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 23:18:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 23:18:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 23:18:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 23:18:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 23:18:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 23:18:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 23:18:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 23:18:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 23:18:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 23:18:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 23:18:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 23:18:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 23:18:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 23:18:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 23:18:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 23:18:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 23:18:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 23:18:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 23:18:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 23:18:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 23:18:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 23:18:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 23:18:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 23:18:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 23:18:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 23:18:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 23:18:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 23:18:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 23:18:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 23:18:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 23:18:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 23:18:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 23:18:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 23:18:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 23:18:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 23:18:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 23:18:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 23:18:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 23:18:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 23:18:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 23:18:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 23:18:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 23:18:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 23:18:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 23:18:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 23:18:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 23:18:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 23:18:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 23:18:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 23:18:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 23:18:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 23:18:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 23:18:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 23:18:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 23:18:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 23:18:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 23:18:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 23:18:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 23:18:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 23:18:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 23:18:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 23:18:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 23:18:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 23:18:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 23:18:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 23:18:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 23:18:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 23:18:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 23:18:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 23:18:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 23:18:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 23:18:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 23:18:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 23:18:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 23:18:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 23:18:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 23:18:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 23:18:53,321 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 23:18:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 23:18:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 23:18:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 23:18:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 23:18:53,322 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 23:18:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 23:18:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 23:18:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 23:18:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 23:18:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 23:18:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 23:18:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 23:18:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 23:18:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 23:18:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 23:18:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 23:18:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 23:18:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 23:18:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 23:18:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 23:18:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 23:18:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 23:18:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 23:18:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 23:18:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 23:18:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:18:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 23:18:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-02 23:18:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 23:18:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:18:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 23:18:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 23:18:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 23:18:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 23:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 23:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 23:18:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:18:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 23:18:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 23:18:53,924 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 23:19:00,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:19:00,587 INFO L299 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-02 23:19:00,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:19:00 BoogieIcfgContainer [2021-11-02 23:19:00,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:19:00,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:19:00,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:19:00,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:19:00,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:18:51" (1/3) ... [2021-11-02 23:19:00,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3568f2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:19:00, skipping insertion in model container [2021-11-02 23:19:00,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:18:52" (2/3) ... [2021-11-02 23:19:00,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3568f2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:19:00, skipping insertion in model container [2021-11-02 23:19:00,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:19:00" (3/3) ... [2021-11-02 23:19:00,603 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-2.i [2021-11-02 23:19:00,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:19:00,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 641 error locations. [2021-11-02 23:19:00,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:19:00,673 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 [2021-11-02 23:19:00,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 641 error locations. [2021-11-02 23:19:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 1301 states, 635 states have (on average 2.251968503937008) internal successors, (1430), 1288 states have internal predecessors, (1430), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-02 23:19:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 23:19:00,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:00,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:00,751 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -462682456, now seen corresponding path program 1 times [2021-11-02 23:19:00,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:00,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744474757] [2021-11-02 23:19:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:00,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:00,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:00,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 23:19:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:01,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:19:01,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:01,210 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 [2021-11-02 23:19:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:01,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:01,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:01,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744474757] [2021-11-02 23:19:01,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744474757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:01,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:01,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 23:19:01,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392408979] [2021-11-02 23:19:01,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:19:01,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:19:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:19:01,341 INFO L87 Difference]: Start difference. First operand has 1301 states, 635 states have (on average 2.251968503937008) internal successors, (1430), 1288 states have internal predecessors, (1430), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-02 23:19:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:04,418 INFO L93 Difference]: Finished difference Result 1481 states and 1587 transitions. [2021-11-02 23:19:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:19:04,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-11-02 23:19:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:04,457 INFO L225 Difference]: With dead ends: 1481 [2021-11-02 23:19:04,457 INFO L226 Difference]: Without dead ends: 1478 [2021-11-02 23:19:04,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:19:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-11-02 23:19:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1289. [2021-11-02 23:19:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 638 states have (on average 2.109717868338558) internal successors, (1346), 1276 states have internal predecessors, (1346), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-02 23:19:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1391 transitions. [2021-11-02 23:19:04,619 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1391 transitions. Word has length 7 [2021-11-02 23:19:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:04,622 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 1391 transitions. [2021-11-02 23:19:04,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-02 23:19:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1391 transitions. [2021-11-02 23:19:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 23:19:04,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:04,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:04,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:04,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:04,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash -462682455, now seen corresponding path program 1 times [2021-11-02 23:19:04,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:04,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928633714] [2021-11-02 23:19:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:04,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:04,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:04,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:04,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 23:19:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:05,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:19:05,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:05,134 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 [2021-11-02 23:19:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:05,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:05,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:05,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928633714] [2021-11-02 23:19:05,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928633714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:05,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:05,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 23:19:05,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723067041] [2021-11-02 23:19:05,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:05,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:05,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:05,269 INFO L87 Difference]: Start difference. First operand 1289 states and 1391 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-02 23:19:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:12,713 INFO L93 Difference]: Finished difference Result 1964 states and 2111 transitions. [2021-11-02 23:19:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:19:12,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 7 [2021-11-02 23:19:12,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:12,729 INFO L225 Difference]: With dead ends: 1964 [2021-11-02 23:19:12,729 INFO L226 Difference]: Without dead ends: 1964 [2021-11-02 23:19:12,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2021-11-02 23:19:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1328. [2021-11-02 23:19:12,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 685 states have (on average 2.0905109489051097) internal successors, (1432), 1314 states have internal predecessors, (1432), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-02 23:19:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1479 transitions. [2021-11-02 23:19:12,790 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1479 transitions. Word has length 7 [2021-11-02 23:19:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:12,791 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1479 transitions. [2021-11-02 23:19:12,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-02 23:19:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1479 transitions. [2021-11-02 23:19:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 23:19:12,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:12,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:12,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-02 23:19:13,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:13,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1645383808, now seen corresponding path program 1 times [2021-11-02 23:19:13,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:13,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691605258] [2021-11-02 23:19:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:13,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:13,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:13,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:13,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 23:19:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:13,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:19:13,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:13,524 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 [2021-11-02 23:19:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:13,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:13,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:13,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691605258] [2021-11-02 23:19:13,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691605258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:13,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:13,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 23:19:13,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201477615] [2021-11-02 23:19:13,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:13,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:13,800 INFO L87 Difference]: Start difference. First operand 1328 states and 1479 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-02 23:19:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:21,366 INFO L93 Difference]: Finished difference Result 1762 states and 1899 transitions. [2021-11-02 23:19:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:19:21,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12 [2021-11-02 23:19:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:21,380 INFO L225 Difference]: With dead ends: 1762 [2021-11-02 23:19:21,380 INFO L226 Difference]: Without dead ends: 1762 [2021-11-02 23:19:21,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2021-11-02 23:19:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1526. [2021-11-02 23:19:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 892 states have (on average 2.062780269058296) internal successors, (1840), 1511 states have internal predecessors, (1840), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 23:19:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1889 transitions. [2021-11-02 23:19:21,438 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1889 transitions. Word has length 12 [2021-11-02 23:19:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:21,439 INFO L470 AbstractCegarLoop]: Abstraction has 1526 states and 1889 transitions. [2021-11-02 23:19:21,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-02 23:19:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1889 transitions. [2021-11-02 23:19:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 23:19:21,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:21,440 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:21,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:21,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:21,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1645383807, now seen corresponding path program 1 times [2021-11-02 23:19:21,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:21,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839379469] [2021-11-02 23:19:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:21,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:21,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:21,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:21,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 23:19:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:21,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:19:21,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:22,005 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 [2021-11-02 23:19:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:22,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:22,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:22,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839379469] [2021-11-02 23:19:22,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839379469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:22,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:22,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 23:19:22,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456568736] [2021-11-02 23:19:22,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:19:22,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:22,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:19:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:19:22,085 INFO L87 Difference]: Start difference. First operand 1526 states and 1889 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-11-02 23:19:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:24,723 INFO L93 Difference]: Finished difference Result 1855 states and 2243 transitions. [2021-11-02 23:19:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:19:24,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 12 [2021-11-02 23:19:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:24,736 INFO L225 Difference]: With dead ends: 1855 [2021-11-02 23:19:24,737 INFO L226 Difference]: Without dead ends: 1855 [2021-11-02 23:19:24,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:19:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-02 23:19:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1479. [2021-11-02 23:19:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 892 states have (on average 2.004484304932735) internal successors, (1788), 1464 states have internal predecessors, (1788), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 23:19:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1837 transitions. [2021-11-02 23:19:24,789 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1837 transitions. Word has length 12 [2021-11-02 23:19:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:24,790 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1837 transitions. [2021-11-02 23:19:24,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-11-02 23:19:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1837 transitions. [2021-11-02 23:19:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 23:19:24,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:24,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:24,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:25,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:25,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:25,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1363174597, now seen corresponding path program 1 times [2021-11-02 23:19:25,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:25,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441855549] [2021-11-02 23:19:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:25,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:25,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:25,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 23:19:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:25,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:19:25,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:25,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:25,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:25,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441855549] [2021-11-02 23:19:25,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441855549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:25,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:25,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 23:19:25,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108989059] [2021-11-02 23:19:25,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:19:25,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:25,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:19:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:19:25,705 INFO L87 Difference]: Start difference. First operand 1479 states and 1837 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-02 23:19:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:26,311 INFO L93 Difference]: Finished difference Result 2292 states and 2867 transitions. [2021-11-02 23:19:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:19:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 [2021-11-02 23:19:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:26,325 INFO L225 Difference]: With dead ends: 2292 [2021-11-02 23:19:26,326 INFO L226 Difference]: Without dead ends: 2292 [2021-11-02 23:19:26,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:19:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2021-11-02 23:19:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1875. [2021-11-02 23:19:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1286 states have (on average 1.989891135303266) internal successors, (2559), 1858 states have internal predecessors, (2559), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2612 transitions. [2021-11-02 23:19:26,393 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2612 transitions. Word has length 15 [2021-11-02 23:19:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:26,394 INFO L470 AbstractCegarLoop]: Abstraction has 1875 states and 2612 transitions. [2021-11-02 23:19:26,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-02 23:19:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2612 transitions. [2021-11-02 23:19:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 23:19:26,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:26,396 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:26,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:26,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:26,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr344REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash -630662469, now seen corresponding path program 1 times [2021-11-02 23:19:26,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:26,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294770973] [2021-11-02 23:19:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:26,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:26,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:26,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:26,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 23:19:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:27,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:19:27,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:27,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:27,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:27,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294770973] [2021-11-02 23:19:27,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294770973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:27,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:27,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 23:19:27,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828469717] [2021-11-02 23:19:27,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:27,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:27,279 INFO L87 Difference]: Start difference. First operand 1875 states and 2612 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-02 23:19:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:27,373 INFO L93 Difference]: Finished difference Result 1998 states and 2672 transitions. [2021-11-02 23:19:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:19:27,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 [2021-11-02 23:19:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:27,395 INFO L225 Difference]: With dead ends: 1998 [2021-11-02 23:19:27,408 INFO L226 Difference]: Without dead ends: 1998 [2021-11-02 23:19:27,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-02 23:19:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1779. [2021-11-02 23:19:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1214 states have (on average 1.9662273476112027) internal successors, (2387), 1762 states have internal predecessors, (2387), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2440 transitions. [2021-11-02 23:19:27,563 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2440 transitions. Word has length 17 [2021-11-02 23:19:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:27,574 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 2440 transitions. [2021-11-02 23:19:27,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-02 23:19:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2440 transitions. [2021-11-02 23:19:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 23:19:27,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:27,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:27,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:27,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:27,794 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr639ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:27,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1411130300, now seen corresponding path program 1 times [2021-11-02 23:19:27,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:27,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458598694] [2021-11-02 23:19:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:27,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:27,813 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:27,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 23:19:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:28,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:19:28,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:28,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 23:19:28,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 23:19:28,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 23:19:28,526 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-02 23:19:28,526 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-02 23:19:28,610 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-02 23:19:28,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-02 23:19:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:28,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:28,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:28,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458598694] [2021-11-02 23:19:28,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458598694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:28,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:28,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 23:19:28,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002917233] [2021-11-02 23:19:28,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:19:28,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:19:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:19:28,780 INFO L87 Difference]: Start difference. First operand 1779 states and 2440 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-02 23:19:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:31,056 INFO L93 Difference]: Finished difference Result 2421 states and 3343 transitions. [2021-11-02 23:19:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:19:31,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-11-02 23:19:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:31,074 INFO L225 Difference]: With dead ends: 2421 [2021-11-02 23:19:31,075 INFO L226 Difference]: Without dead ends: 2421 [2021-11-02 23:19:31,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:19:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-11-02 23:19:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1778. [2021-11-02 23:19:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1213 states have (on average 1.966199505358615) internal successors, (2385), 1761 states have internal predecessors, (2385), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2438 transitions. [2021-11-02 23:19:31,131 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2438 transitions. Word has length 18 [2021-11-02 23:19:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:31,131 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 2438 transitions. [2021-11-02 23:19:31,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-02 23:19:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2438 transitions. [2021-11-02 23:19:31,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 23:19:31,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:31,133 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] [2021-11-02 23:19:31,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:31,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:31,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash 548645739, now seen corresponding path program 1 times [2021-11-02 23:19:31,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:31,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021948087] [2021-11-02 23:19:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:31,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:31,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:31,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 23:19:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:31,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:19:31,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:31,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:31,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:31,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021948087] [2021-11-02 23:19:31,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021948087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:31,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:31,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 23:19:31,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917897301] [2021-11-02 23:19:31,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:31,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:31,952 INFO L87 Difference]: Start difference. First operand 1778 states and 2438 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-02 23:19:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:32,041 INFO L93 Difference]: Finished difference Result 1718 states and 2352 transitions. [2021-11-02 23:19:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:19:32,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 22 [2021-11-02 23:19:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:32,056 INFO L225 Difference]: With dead ends: 1718 [2021-11-02 23:19:32,056 INFO L226 Difference]: Without dead ends: 1718 [2021-11-02 23:19:32,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:32,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2021-11-02 23:19:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1718. [2021-11-02 23:19:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1177 states have (on average 1.9532710280373833) internal successors, (2299), 1701 states have internal predecessors, (2299), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2352 transitions. [2021-11-02 23:19:32,156 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2352 transitions. Word has length 22 [2021-11-02 23:19:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:32,156 INFO L470 AbstractCegarLoop]: Abstraction has 1718 states and 2352 transitions. [2021-11-02 23:19:32,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-02 23:19:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2352 transitions. [2021-11-02 23:19:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 23:19:32,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:32,158 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] [2021-11-02 23:19:32,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:32,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:32,374 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1032421403, now seen corresponding path program 1 times [2021-11-02 23:19:32,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:32,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430592661] [2021-11-02 23:19:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:32,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:32,377 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:32,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 23:19:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:32,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:19:32,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:32,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:32,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:32,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430592661] [2021-11-02 23:19:32,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430592661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:32,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:32,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 23:19:32,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984435146] [2021-11-02 23:19:32,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:19:32,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:19:32,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:19:32,843 INFO L87 Difference]: Start difference. First operand 1718 states and 2352 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-02 23:19:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:32,938 INFO L93 Difference]: Finished difference Result 1690 states and 2296 transitions. [2021-11-02 23:19:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:19:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-11-02 23:19:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:32,947 INFO L225 Difference]: With dead ends: 1690 [2021-11-02 23:19:32,947 INFO L226 Difference]: Without dead ends: 1690 [2021-11-02 23:19:32,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:19:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-02 23:19:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1688. [2021-11-02 23:19:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1161 states have (on average 1.930232558139535) internal successors, (2241), 1671 states have internal predecessors, (2241), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2294 transitions. [2021-11-02 23:19:32,994 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2294 transitions. Word has length 24 [2021-11-02 23:19:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:32,995 INFO L470 AbstractCegarLoop]: Abstraction has 1688 states and 2294 transitions. [2021-11-02 23:19:32,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-02 23:19:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2294 transitions. [2021-11-02 23:19:32,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 23:19:32,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:32,997 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] [2021-11-02 23:19:33,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:33,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:33,213 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash 473845043, now seen corresponding path program 1 times [2021-11-02 23:19:33,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:33,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705612540] [2021-11-02 23:19:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:33,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:33,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:33,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:33,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 23:19:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:33,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:19:33,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:33,598 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 [2021-11-02 23:19:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:33,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:33,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:33,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705612540] [2021-11-02 23:19:33,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705612540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:33,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:33,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 23:19:33,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200631808] [2021-11-02 23:19:33,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:33,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:33,948 INFO L87 Difference]: Start difference. First operand 1688 states and 2294 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-02 23:19:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:37,264 INFO L93 Difference]: Finished difference Result 2549 states and 3560 transitions. [2021-11-02 23:19:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:19:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 38 [2021-11-02 23:19:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:37,290 INFO L225 Difference]: With dead ends: 2549 [2021-11-02 23:19:37,291 INFO L226 Difference]: Without dead ends: 2549 [2021-11-02 23:19:37,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:19:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2021-11-02 23:19:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 1684. [2021-11-02 23:19:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1161 states have (on average 1.9233419465977606) internal successors, (2233), 1667 states have internal predecessors, (2233), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2286 transitions. [2021-11-02 23:19:37,341 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2286 transitions. Word has length 38 [2021-11-02 23:19:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:37,342 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 2286 transitions. [2021-11-02 23:19:37,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-02 23:19:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2286 transitions. [2021-11-02 23:19:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 23:19:37,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:37,345 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] [2021-11-02 23:19:37,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:37,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:37,560 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:37,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash 473845044, now seen corresponding path program 1 times [2021-11-02 23:19:37,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:37,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085329477] [2021-11-02 23:19:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:37,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:37,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:37,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:37,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 23:19:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:38,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:19:38,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:38,271 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 [2021-11-02 23:19:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:38,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:39,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:39,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085329477] [2021-11-02 23:19:39,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085329477] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:39,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:39,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 23:19:39,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922200643] [2021-11-02 23:19:39,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:19:39,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:19:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:19:39,220 INFO L87 Difference]: Start difference. First operand 1684 states and 2286 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-02 23:19:49,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:49,184 INFO L93 Difference]: Finished difference Result 2102 states and 2512 transitions. [2021-11-02 23:19:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:19:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 38 [2021-11-02 23:19:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:49,196 INFO L225 Difference]: With dead ends: 2102 [2021-11-02 23:19:49,196 INFO L226 Difference]: Without dead ends: 2102 [2021-11-02 23:19:49,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:19:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-11-02 23:19:49,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1680. [2021-11-02 23:19:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1161 states have (on average 1.9164513350559862) internal successors, (2225), 1663 states have internal predecessors, (2225), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2278 transitions. [2021-11-02 23:19:49,241 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2278 transitions. Word has length 38 [2021-11-02 23:19:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:49,241 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 2278 transitions. [2021-11-02 23:19:49,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-02 23:19:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2278 transitions. [2021-11-02 23:19:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 23:19:49,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:49,244 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] [2021-11-02 23:19:49,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:49,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:49,460 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1488929842, now seen corresponding path program 1 times [2021-11-02 23:19:49,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:49,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695218833] [2021-11-02 23:19:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:49,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:49,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:49,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:49,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 23:19:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:50,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:19:50,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:50,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:50,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:50,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695218833] [2021-11-02 23:19:50,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695218833] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:50,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:50,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 23:19:50,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687430725] [2021-11-02 23:19:50,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:50,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:50,410 INFO L87 Difference]: Start difference. First operand 1680 states and 2278 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-02 23:19:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:50,478 INFO L93 Difference]: Finished difference Result 1668 states and 2258 transitions. [2021-11-02 23:19:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:19:50,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 56 [2021-11-02 23:19:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:50,490 INFO L225 Difference]: With dead ends: 1668 [2021-11-02 23:19:50,490 INFO L226 Difference]: Without dead ends: 1668 [2021-11-02 23:19:50,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:19:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-11-02 23:19:50,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2021-11-02 23:19:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1149 states have (on average 1.919060052219321) internal successors, (2205), 1651 states have internal predecessors, (2205), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:19:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2258 transitions. [2021-11-02 23:19:50,533 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2258 transitions. Word has length 56 [2021-11-02 23:19:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:50,533 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2258 transitions. [2021-11-02 23:19:50,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-02 23:19:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2258 transitions. [2021-11-02 23:19:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 23:19:50,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:50,535 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] [2021-11-02 23:19:50,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:50,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:19:50,749 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:19:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1713993986, now seen corresponding path program 1 times [2021-11-02 23:19:50,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:19:50,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885883803] [2021-11-02 23:19:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:50,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:19:50,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:19:50,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:19:50,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 23:19:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:51,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 23:19:51,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:51,589 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 [2021-11-02 23:19:51,595 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 [2021-11-02 23:19:52,501 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 23:19:52,502 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 [2021-11-02 23:19:52,530 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 23:19:52,531 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 [2021-11-02 23:19:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:52,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:19:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:58,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:19:58,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885883803] [2021-11-02 23:19:58,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885883803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:58,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:58,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 23:19:58,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628558200] [2021-11-02 23:19:58,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:19:58,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:19:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:19:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 23:19:58,214 INFO L87 Difference]: Start difference. First operand 1668 states and 2258 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-11-02 23:20:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:14,159 INFO L93 Difference]: Finished difference Result 2315 states and 3311 transitions. [2021-11-02 23:20:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:20:14,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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 64 [2021-11-02 23:20:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:14,172 INFO L225 Difference]: With dead ends: 2315 [2021-11-02 23:20:14,172 INFO L226 Difference]: Without dead ends: 2315 [2021-11-02 23:20:14,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 23:20:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-11-02 23:20:14,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1300. [2021-11-02 23:20:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 823 states have (on average 1.8383961117861483) internal successors, (1513), 1285 states have internal predecessors, (1513), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 23:20:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1562 transitions. [2021-11-02 23:20:14,206 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1562 transitions. Word has length 64 [2021-11-02 23:20:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:14,207 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1562 transitions. [2021-11-02 23:20:14,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-11-02 23:20:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1562 transitions. [2021-11-02 23:20:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 23:20:14,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:14,209 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] [2021-11-02 23:20:14,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:14,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:20:14,425 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:20:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1942159803, now seen corresponding path program 1 times [2021-11-02 23:20:14,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:20:14,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177180786] [2021-11-02 23:20:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:14,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:20:14,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:20:14,445 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:20:14,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 23:20:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:15,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 23:20:15,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:15,624 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 [2021-11-02 23:20:15,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-02 23:20:15,703 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 [2021-11-02 23:20:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:15,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:20:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:15,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:20:15,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177180786] [2021-11-02 23:20:15,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177180786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:20:15,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:20:15,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 23:20:15,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333625613] [2021-11-02 23:20:15,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:20:15,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:20:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:20:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:20:15,926 INFO L87 Difference]: Start difference. First operand 1300 states and 1562 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2021-11-02 23:20:21,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:21,757 INFO L93 Difference]: Finished difference Result 1299 states and 1561 transitions. [2021-11-02 23:20:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:20:21,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 69 [2021-11-02 23:20:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:21,770 INFO L225 Difference]: With dead ends: 1299 [2021-11-02 23:20:21,771 INFO L226 Difference]: Without dead ends: 1299 [2021-11-02 23:20:21,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:20:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2021-11-02 23:20:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1299. [2021-11-02 23:20:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 823 states have (on average 1.8371810449574726) internal successors, (1512), 1284 states have internal predecessors, (1512), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 23:20:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1561 transitions. [2021-11-02 23:20:21,825 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1561 transitions. Word has length 69 [2021-11-02 23:20:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:21,827 INFO L470 AbstractCegarLoop]: Abstraction has 1299 states and 1561 transitions. [2021-11-02 23:20:21,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2021-11-02 23:20:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1561 transitions. [2021-11-02 23:20:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 23:20:21,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:21,845 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] [2021-11-02 23:20:21,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:22,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:20:22,062 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:20:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1942159802, now seen corresponding path program 1 times [2021-11-02 23:20:22,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:20:22,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58087421] [2021-11-02 23:20:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:22,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:20:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:20:22,068 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:20:22,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 23:20:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:22,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 23:20:22,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:23,130 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 [2021-11-02 23:20:23,182 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 [2021-11-02 23:20:23,198 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 [2021-11-02 23:20:23,308 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 [2021-11-02 23:20:23,311 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 [2021-11-02 23:20:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:23,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:20:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:23,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:20:23,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58087421] [2021-11-02 23:20:23,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58087421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:20:23,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:20:23,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 23:20:23,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823874796] [2021-11-02 23:20:23,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:20:23,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:20:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:20:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:20:23,712 INFO L87 Difference]: Start difference. First operand 1299 states and 1561 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-02 23:20:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:38,023 INFO L93 Difference]: Finished difference Result 1298 states and 1560 transitions. [2021-11-02 23:20:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:20:38,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 69 [2021-11-02 23:20:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:38,030 INFO L225 Difference]: With dead ends: 1298 [2021-11-02 23:20:38,030 INFO L226 Difference]: Without dead ends: 1298 [2021-11-02 23:20:38,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:20:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-02 23:20:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2021-11-02 23:20:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 822 states have (on average 1.838199513381995) internal successors, (1511), 1283 states have internal predecessors, (1511), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 23:20:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1560 transitions. [2021-11-02 23:20:38,055 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1560 transitions. Word has length 69 [2021-11-02 23:20:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:38,055 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1560 transitions. [2021-11-02 23:20:38,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-02 23:20:38,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1560 transitions. [2021-11-02 23:20:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 23:20:38,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:38,057 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:20:38,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:38,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:20:38,272 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:20:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:38,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1428260308, now seen corresponding path program 1 times [2021-11-02 23:20:38,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:20:38,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82523275] [2021-11-02 23:20:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:38,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:20:38,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:20:38,275 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:20:38,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 23:20:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:38,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:20:38,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:39,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:20:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:39,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:20:39,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82523275] [2021-11-02 23:20:39,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82523275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:20:39,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:20:39,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 23:20:39,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742710035] [2021-11-02 23:20:39,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:20:39,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:20:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:20:39,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:20:39,512 INFO L87 Difference]: Start difference. First operand 1298 states and 1560 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-02 23:20:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:39,705 INFO L93 Difference]: Finished difference Result 1308 states and 1573 transitions. [2021-11-02 23:20:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:20:39,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 77 [2021-11-02 23:20:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:39,722 INFO L225 Difference]: With dead ends: 1308 [2021-11-02 23:20:39,722 INFO L226 Difference]: Without dead ends: 1308 [2021-11-02 23:20:39,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:20:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-11-02 23:20:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1308. [2021-11-02 23:20:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 830 states have (on average 1.8349397590361445) internal successors, (1523), 1292 states have internal predecessors, (1523), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 23:20:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1573 transitions. [2021-11-02 23:20:39,775 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1573 transitions. Word has length 77 [2021-11-02 23:20:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:39,775 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 1573 transitions. [2021-11-02 23:20:39,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-02 23:20:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1573 transitions. [2021-11-02 23:20:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 23:20:39,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:39,778 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:20:39,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:20:39,993 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:20:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash 926097644, now seen corresponding path program 1 times [2021-11-02 23:20:39,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:20:39,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100393695] [2021-11-02 23:20:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:39,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:20:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:20:39,995 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:20:39,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 23:20:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:40,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:20:40,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:40,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:20:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:41,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:20:41,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100393695] [2021-11-02 23:20:41,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100393695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:20:41,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:20:41,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 23:20:41,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511985005] [2021-11-02 23:20:41,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 23:20:41,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:20:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 23:20:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:20:41,148 INFO L87 Difference]: Start difference. First operand 1308 states and 1573 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-02 23:20:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:41,626 INFO L93 Difference]: Finished difference Result 1322 states and 1591 transitions. [2021-11-02 23:20:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 23:20:41,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 79 [2021-11-02 23:20:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:41,633 INFO L225 Difference]: With dead ends: 1322 [2021-11-02 23:20:41,633 INFO L226 Difference]: Without dead ends: 1318 [2021-11-02 23:20:41,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:20:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-11-02 23:20:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1314. [2021-11-02 23:20:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 836 states have (on average 1.8313397129186604) internal successors, (1531), 1298 states have internal predecessors, (1531), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 23:20:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1581 transitions. [2021-11-02 23:20:41,665 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1581 transitions. Word has length 79 [2021-11-02 23:20:41,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:41,665 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1581 transitions. [2021-11-02 23:20:41,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-02 23:20:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1581 transitions. [2021-11-02 23:20:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 23:20:41,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:41,667 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:20:41,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:41,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:20:41,881 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:20:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1897684588, now seen corresponding path program 2 times [2021-11-02 23:20:41,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:20:41,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081776882] [2021-11-02 23:20:41,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:20:41,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:20:41,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:20:41,883 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:20:41,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 23:20:43,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:20:43,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:20:43,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 23:20:43,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:44,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:20:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:44,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:20:44,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081776882] [2021-11-02 23:20:44,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081776882] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:20:44,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:20:44,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 23:20:44,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435352089] [2021-11-02 23:20:44,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 23:20:44,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:20:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 23:20:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:20:44,742 INFO L87 Difference]: Start difference. First operand 1314 states and 1581 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-02 23:20:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:46,450 INFO L93 Difference]: Finished difference Result 1342 states and 1619 transitions. [2021-11-02 23:20:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 23:20:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 83 [2021-11-02 23:20:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:46,456 INFO L225 Difference]: With dead ends: 1342 [2021-11-02 23:20:46,456 INFO L226 Difference]: Without dead ends: 1338 [2021-11-02 23:20:46,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 23:20:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-02 23:20:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1326. [2021-11-02 23:20:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 848 states have (on average 1.8242924528301887) internal successors, (1547), 1310 states have internal predecessors, (1547), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 23:20:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1597 transitions. [2021-11-02 23:20:46,481 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1597 transitions. Word has length 83 [2021-11-02 23:20:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:46,482 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1597 transitions. [2021-11-02 23:20:46,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-02 23:20:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1597 transitions. [2021-11-02 23:20:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 23:20:46,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:46,483 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:20:46,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:46,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:20:46,697 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:20:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1564567188, now seen corresponding path program 3 times [2021-11-02 23:20:46,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:20:46,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238567674] [2021-11-02 23:20:46,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:20:46,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:20:46,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:20:46,700 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:20:46,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 23:20:48,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 23:20:48,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:20:48,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 23:20:48,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:48,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:20:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:50,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:20:50,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238567674] [2021-11-02 23:20:50,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238567674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:20:50,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:20:50,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 23:20:50,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583344409] [2021-11-02 23:20:50,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 23:20:50,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:20:50,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 23:20:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:20:50,667 INFO L87 Difference]: Start difference. First operand 1326 states and 1597 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-02 23:20:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:59,194 INFO L93 Difference]: Finished difference Result 1382 states and 1675 transitions. [2021-11-02 23:20:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 23:20:59,201 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 91 [2021-11-02 23:20:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:59,205 INFO L225 Difference]: With dead ends: 1382 [2021-11-02 23:20:59,206 INFO L226 Difference]: Without dead ends: 1378 [2021-11-02 23:20:59,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 23:20:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-11-02 23:20:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1350. [2021-11-02 23:20:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 872 states have (on average 1.8107798165137614) internal successors, (1579), 1334 states have internal predecessors, (1579), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 23:20:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1629 transitions. [2021-11-02 23:20:59,240 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1629 transitions. Word has length 91 [2021-11-02 23:20:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:59,241 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 1629 transitions. [2021-11-02 23:20:59,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-02 23:20:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1629 transitions. [2021-11-02 23:20:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 23:20:59,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:59,242 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:20:59,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-02 23:20:59,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:20:59,457 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:20:59,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:59,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1413345428, now seen corresponding path program 4 times [2021-11-02 23:20:59,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:20:59,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356205380] [2021-11-02 23:20:59,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:20:59,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:20:59,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:20:59,460 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:20:59,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-02 23:21:00,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:21:00,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:01,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 23:21:01,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:02,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:21:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:08,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:21:08,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356205380] [2021-11-02 23:21:08,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356205380] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:21:08,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:21:08,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 23:21:08,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610212714] [2021-11-02 23:21:08,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 23:21:08,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:21:08,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 23:21:08,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 23:21:08,160 INFO L87 Difference]: Start difference. First operand 1350 states and 1629 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-02 23:21:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:26,534 INFO L93 Difference]: Finished difference Result 1444 states and 1751 transitions. [2021-11-02 23:21:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 23:21:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 107 [2021-11-02 23:21:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:26,539 INFO L225 Difference]: With dead ends: 1444 [2021-11-02 23:21:26,539 INFO L226 Difference]: Without dead ends: 1440 [2021-11-02 23:21:26,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 23:21:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-11-02 23:21:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1380. [2021-11-02 23:21:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 902 states have (on average 1.8015521064301552) internal successors, (1625), 1364 states have internal predecessors, (1625), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 23:21:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1675 transitions. [2021-11-02 23:21:26,575 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1675 transitions. Word has length 107 [2021-11-02 23:21:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:26,576 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1675 transitions. [2021-11-02 23:21:26,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-02 23:21:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1675 transitions. [2021-11-02 23:21:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 23:21:26,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:26,578 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:26,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:26,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:21:26,797 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 637 more)] === [2021-11-02 23:21:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash 101973676, now seen corresponding path program 5 times [2021-11-02 23:21:26,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:21:26,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897477401] [2021-11-02 23:21:26,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:21:26,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:21:26,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:21:26,801 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:21:26,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32149efb-db4f-4f1f-9c6d-597afa947f19/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-02 23:21:29,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 23:21:29,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:29,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 23:21:29,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:29,591 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 [2021-11-02 23:21:29,958 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 23:21:29,958 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 21 treesize of output 28 [2021-11-02 23:21:30,036 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 26 treesize of output 22 [2021-11-02 23:21:30,331 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 36 treesize of output 24