./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 816e37c4bcf3aac0429d508c13e4e6eeab848e29c3869a32879e05a2b79a73a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:58:36,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:58:36,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:58:36,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:58:36,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:58:36,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:58:36,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:58:36,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:58:36,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:58:36,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:58:36,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:58:36,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:58:36,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:58:36,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:58:36,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:58:36,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:58:36,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:58:36,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:58:36,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:58:36,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:58:36,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:58:36,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:58:36,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:58:36,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:58:36,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:58:36,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:58:36,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:58:36,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:58:36,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:58:36,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:58:36,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:58:36,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:58:36,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:58:36,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:58:36,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:58:36,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:58:36,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:58:36,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:58:36,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:58:36,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:58:36,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:58:36,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:58:36,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:58:36,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:58:36,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:58:36,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:58:36,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:58:36,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:58:36,359 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:58:36,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:58:36,360 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:58:36,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:58:36,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:58:36,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:58:36,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:58:36,363 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:58:36,363 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:58:36,363 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:58:36,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:58:36,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:58:36,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:58:36,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:58:36,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:58:36,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:58:36,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:58:36,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:36,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:58:36,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:58:36,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:58:36,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:58:36,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:58:36,369 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 816e37c4bcf3aac0429d508c13e4e6eeab848e29c3869a32879e05a2b79a73a3 [2021-11-09 08:58:36,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:58:36,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:58:36,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:58:36,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:58:36,763 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:58:36,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i [2021-11-09 08:58:36,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/6b3cecea0/d52961f0f6cf4ceab2af1eae731d13c1/FLAG38efb3985 [2021-11-09 08:58:37,517 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:58:37,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i [2021-11-09 08:58:37,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/6b3cecea0/d52961f0f6cf4ceab2af1eae731d13c1/FLAG38efb3985 [2021-11-09 08:58:37,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/6b3cecea0/d52961f0f6cf4ceab2af1eae731d13c1 [2021-11-09 08:58:37,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:37,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:58:37,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:37,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:37,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:37,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb459e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:37, skipping insertion in model container [2021-11-09 08:58:37,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:37" (1/1) ... [2021-11-09 08:58:37,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:37,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:38,341 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[37019,37032] [2021-11-09 08:58:38,541 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[47352,47365] [2021-11-09 08:58:38,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:38,601 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 08:58:38,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75c9133d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:38, skipping insertion in model container [2021-11-09 08:58:38,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:38,602 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 08:58:38,605 INFO L168 Benchmark]: Toolchain (without parser) took 920.11 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 46.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:38,606 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:58:38,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 917.33 ms. Allocated memory is still 90.2 MB. Free memory was 66.0 MB in the beginning and 46.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:38,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 917.33 ms. Allocated memory is still 90.2 MB. Free memory was 66.0 MB in the beginning and 46.9 MB in the end (delta: 19.1 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: 815]: 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 816e37c4bcf3aac0429d508c13e4e6eeab848e29c3869a32879e05a2b79a73a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:58:41,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:58:41,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:58:41,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:58:41,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:58:41,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:58:41,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:58:41,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:58:41,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:58:41,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:58:41,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:58:41,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:58:41,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:58:41,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:58:41,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:58:41,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:58:41,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:58:41,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:58:41,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:58:41,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:58:41,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:58:41,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:58:41,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:58:41,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:58:41,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:58:41,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:58:41,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:58:41,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:58:41,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:58:41,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:58:41,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:58:41,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:58:41,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:58:41,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:58:41,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:58:41,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:58:41,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:58:41,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:58:41,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:58:41,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:58:41,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:58:41,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 08:58:41,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:58:41,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:58:41,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:58:41,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:58:41,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:58:41,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:58:41,147 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:58:41,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:58:41,148 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:58:41,148 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:58:41,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:58:41,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:58:41,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:58:41,149 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:58:41,149 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:58:41,149 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:58:41,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:58:41,149 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:58:41,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:58:41,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:58:41,150 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:58:41,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:58:41,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:58:41,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:58:41,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:58:41,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:41,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:58:41,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:58:41,152 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:58:41,152 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:58:41,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:58:41,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:58:41,152 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 816e37c4bcf3aac0429d508c13e4e6eeab848e29c3869a32879e05a2b79a73a3 [2021-11-09 08:58:41,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:58:41,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:58:41,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:58:41,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:58:41,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:58:41,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i [2021-11-09 08:58:41,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/54c45e9ad/65e6c76cd25148a0b95266524962a9db/FLAG1be8e9b7d [2021-11-09 08:58:42,333 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:58:42,333 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i [2021-11-09 08:58:42,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/54c45e9ad/65e6c76cd25148a0b95266524962a9db/FLAG1be8e9b7d [2021-11-09 08:58:42,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/data/54c45e9ad/65e6c76cd25148a0b95266524962a9db [2021-11-09 08:58:42,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:42,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:58:42,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:42,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:42,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:42,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e94342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42, skipping insertion in model container [2021-11-09 08:58:42,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:42,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:43,110 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[37019,37032] [2021-11-09 08:58:43,290 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[47352,47365] [2021-11-09 08:58:43,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:43,331 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 08:58:43,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:43,384 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[37019,37032] [2021-11-09 08:58:43,494 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[47352,47365] [2021-11-09 08:58:43,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:43,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:58:43,590 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[37019,37032] [2021-11-09 08:58:43,665 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_4a0e7ed4-73e8-4a8c-91b6-594182adca53/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-2.i[47352,47365] [2021-11-09 08:58:43,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:43,774 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:58:43,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43 WrapperNode [2021-11-09 08:58:43,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:43,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:58:43,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:58:43,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:58:43,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:43,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:43,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:43,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:43,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:43,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:43,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:43,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:58:44,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:58:44,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:58:44,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:58:44,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (1/1) ... [2021-11-09 08:58:44,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:44,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:58:44,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:58:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:58:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:58:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:58:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 08:58:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 08:58:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 08:58:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 08:58:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 08:58:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:58:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 08:58:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 08:58:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:58:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 08:58:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 08:58:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 08:58:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 08:58:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 08:58:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 08:58:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 08:58:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 08:58:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 08:58:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 08:58:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 08:58:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 08:58:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 08:58:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 08:58:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 08:58:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 08:58:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 08:58:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 08:58:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 08:58:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 08:58:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 08:58:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 08:58:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 08:58:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 08:58:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 08:58:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 08:58:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 08:58:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 08:58:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 08:58:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 08:58:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 08:58:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 08:58:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 08:58:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 08:58:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 08:58:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 08:58:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 08:58:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 08:58:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 08:58:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 08:58:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 08:58:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 08:58:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 08:58:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 08:58:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 08:58:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 08:58:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 08:58:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 08:58:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 08:58:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 08:58:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 08:58:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 08:58:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:58:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:58:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:58:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:58:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:58:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:58:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:58:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:58:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:58:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:58:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:58:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:58:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:58:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:58:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:58:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:58:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 08:58:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 08:58:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 08:58:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 08:58:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 08:58:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:58:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:58:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:58:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:58:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:58:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:58:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:58:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:58:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:58:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:58:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:58:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:58:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:58:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:58:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:58:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:58:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:58:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:58:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:58:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:58:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:58:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:58:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:58:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:58:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:58:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:58:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:58:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:58:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:58:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:58:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:58:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:58:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:58:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:58:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:58:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:58:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:58:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:58:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:58:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:58:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:58:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:58:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:58:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:58:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:58:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:58:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:58:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:58:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:58:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:58:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:58:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:58:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:58:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:58:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:58:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:58:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:58:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:58:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:58:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:58:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:58:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:58:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:58:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:58:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:58:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:58:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:58:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:58:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:58:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:58:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:58:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:58:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:58:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:58:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:58:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:58:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:58:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:58:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:58:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:58:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:58:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:58:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:58:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:58:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:58:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:58:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure clock [2021-11-09 08:58:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure time [2021-11-09 08:58:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure difftime [2021-11-09 08:58:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2021-11-09 08:58:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2021-11-09 08:58:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure strftime_l [2021-11-09 08:58:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime [2021-11-09 08:58:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2021-11-09 08:58:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime_r [2021-11-09 08:58:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure localtime_r [2021-11-09 08:58:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure asctime [2021-11-09 08:58:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2021-11-09 08:58:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure asctime_r [2021-11-09 08:58:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure ctime_r [2021-11-09 08:58:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure tzset [2021-11-09 08:58:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure stime [2021-11-09 08:58:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure timegm [2021-11-09 08:58:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure timelocal [2021-11-09 08:58:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure dysize [2021-11-09 08:58:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure nanosleep [2021-11-09 08:58:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getres [2021-11-09 08:58:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure clock_gettime [2021-11-09 08:58:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure clock_settime [2021-11-09 08:58:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure clock_nanosleep [2021-11-09 08:58:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getcpuclockid [2021-11-09 08:58:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure timer_create [2021-11-09 08:58:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure timer_delete [2021-11-09 08:58:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure timer_settime [2021-11-09 08:58:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure timer_gettime [2021-11-09 08:58:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure timer_getoverrun [2021-11-09 08:58:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_get [2021-11-09 08:58:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:58:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:58:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:58:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:58:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:58:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 08:58:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 08:58:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:58:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:58:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 08:58:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 08:58:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 08:58:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:58:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:58:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 08:58:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:58:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:58:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:58:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:58:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:58:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 08:58:44,743 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 08:58:50,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:58:50,152 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-09 08:58:50,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:50 BoogieIcfgContainer [2021-11-09 08:58:50,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:58:50,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:58:50,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:58:50,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:58:50,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:58:42" (1/3) ... [2021-11-09 08:58:50,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ede958b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:50, skipping insertion in model container [2021-11-09 08:58:50,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:43" (2/3) ... [2021-11-09 08:58:50,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ede958b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:50, skipping insertion in model container [2021-11-09 08:58:50,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:50" (3/3) ... [2021-11-09 08:58:50,172 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-2.i [2021-11-09 08:58:50,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:58:50,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-09 08:58:50,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:58:50,271 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:58:50,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-09 08:58:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 1089 states, 539 states have (on average 2.2319109461966606) internal successors, (1203), 1077 states have internal predecessors, (1203), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:58:50,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:58:50,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:50,342 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:50,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:58:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:50,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1408970550, now seen corresponding path program 1 times [2021-11-09 08:58:50,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:58:50,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686201751] [2021-11-09 08:58:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:50,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:58:50,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:58:50,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:58:50,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:58:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:50,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:58:50,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:50,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:58:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:50,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:58:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:50,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:58:50,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686201751] [2021-11-09 08:58:50,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686201751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:50,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:50,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:58:50,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684459455] [2021-11-09 08:58:50,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:50,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:58:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:50,766 INFO L87 Difference]: Start difference. First operand has 1089 states, 539 states have (on average 2.2319109461966606) internal successors, (1203), 1077 states have internal predecessors, (1203), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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) [2021-11-09 08:58:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:53,289 INFO L93 Difference]: Finished difference Result 1253 states and 1329 transitions. [2021-11-09 08:58:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:53,290 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 [2021-11-09 08:58:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:53,318 INFO L225 Difference]: With dead ends: 1253 [2021-11-09 08:58:53,319 INFO L226 Difference]: Without dead ends: 1250 [2021-11-09 08:58:53,320 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 [2021-11-09 08:58:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-11-09 08:58:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1072. [2021-11-09 08:58:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 539 states have (on average 2.0760667903525047) internal successors, (1119), 1061 states have internal predecessors, (1119), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:58:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1140 transitions. [2021-11-09 08:58:53,439 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1140 transitions. Word has length 7 [2021-11-09 08:58:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:53,440 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1140 transitions. [2021-11-09 08:58:53,440 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) [2021-11-09 08:58:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1140 transitions. [2021-11-09 08:58:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:58:53,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:53,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:53,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:53,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:58:53,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:58:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1408970549, now seen corresponding path program 1 times [2021-11-09 08:58:53,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:58:53,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975944174] [2021-11-09 08:58:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:53,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:58:53,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:58:53,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:58:53,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:58:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:53,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:58:53,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:53,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:58:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:53,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:58:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:54,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:58:54,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975944174] [2021-11-09 08:58:54,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975944174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:54,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:54,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:58:54,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121487280] [2021-11-09 08:58:54,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:58:54,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:58:54,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:58:54,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:58:54,068 INFO L87 Difference]: Start difference. First operand 1072 states and 1140 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) [2021-11-09 08:58:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:59,606 INFO L93 Difference]: Finished difference Result 1554 states and 1658 transitions. [2021-11-09 08:58:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:58:59,606 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 [2021-11-09 08:58:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:59,617 INFO L225 Difference]: With dead ends: 1554 [2021-11-09 08:58:59,617 INFO L226 Difference]: Without dead ends: 1554 [2021-11-09 08:58:59,618 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 [2021-11-09 08:58:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-09 08:58:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1107. [2021-11-09 08:58:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 583 states have (on average 2.0548885077186965) internal successors, (1198), 1096 states have internal predecessors, (1198), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:58:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1219 transitions. [2021-11-09 08:58:59,667 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1219 transitions. Word has length 7 [2021-11-09 08:58:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:59,667 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1219 transitions. [2021-11-09 08:58:59,668 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) [2021-11-09 08:58:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1219 transitions. [2021-11-09 08:58:59,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:58:59,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:59,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:59,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-09 08:58:59,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:58:59,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:58:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2093131419, now seen corresponding path program 1 times [2021-11-09 08:58:59,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:58:59,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718833106] [2021-11-09 08:58:59,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:59,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:58:59,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:58:59,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:58:59,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:59:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:00,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:59:00,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:00,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:00,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:00,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:00,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718833106] [2021-11-09 08:59:00,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718833106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:00,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:00,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:59:00,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550352731] [2021-11-09 08:59:00,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:00,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:00,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:00,344 INFO L87 Difference]: Start difference. First operand 1107 states and 1219 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) [2021-11-09 08:59:02,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:02,258 INFO L93 Difference]: Finished difference Result 1273 states and 1403 transitions. [2021-11-09 08:59:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:02,260 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 [2021-11-09 08:59:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:02,267 INFO L225 Difference]: With dead ends: 1273 [2021-11-09 08:59:02,268 INFO L226 Difference]: Without dead ends: 1273 [2021-11-09 08:59:02,268 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 [2021-11-09 08:59:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-09 08:59:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1060. [2021-11-09 08:59:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 583 states have (on average 1.9691252144082332) internal successors, (1148), 1049 states have internal predecessors, (1148), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:59:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1169 transitions. [2021-11-09 08:59:02,301 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1169 transitions. Word has length 12 [2021-11-09 08:59:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:02,301 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1169 transitions. [2021-11-09 08:59:02,302 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) [2021-11-09 08:59:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1169 transitions. [2021-11-09 08:59:02,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:59:02,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:02,303 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:02,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:02,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:02,515 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:02,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:02,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2093131418, now seen corresponding path program 1 times [2021-11-09 08:59:02,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:02,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067515258] [2021-11-09 08:59:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:02,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:02,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:02,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:02,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:59:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:02,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:02,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:02,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:02,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:02,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067515258] [2021-11-09 08:59:02,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067515258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:02,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:02,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:59:02,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994851149] [2021-11-09 08:59:02,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:02,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:02,955 INFO L87 Difference]: Start difference. First operand 1060 states and 1169 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) [2021-11-09 08:59:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:07,220 INFO L93 Difference]: Finished difference Result 1303 states and 1397 transitions. [2021-11-09 08:59:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:07,222 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 [2021-11-09 08:59:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:07,230 INFO L225 Difference]: With dead ends: 1303 [2021-11-09 08:59:07,231 INFO L226 Difference]: Without dead ends: 1303 [2021-11-09 08:59:07,231 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 [2021-11-09 08:59:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-11-09 08:59:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1050. [2021-11-09 08:59:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 583 states have (on average 1.946826758147513) internal successors, (1135), 1039 states have internal predecessors, (1135), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:59:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1156 transitions. [2021-11-09 08:59:07,284 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1156 transitions. Word has length 12 [2021-11-09 08:59:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:07,285 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1156 transitions. [2021-11-09 08:59:07,285 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) [2021-11-09 08:59:07,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1156 transitions. [2021-11-09 08:59:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:59:07,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:07,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:07,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:07,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:07,500 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:07,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1355083610, now seen corresponding path program 1 times [2021-11-09 08:59:07,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:07,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319468290] [2021-11-09 08:59:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:07,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:07,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:07,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:07,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:59:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:07,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:07,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:07,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:07,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:07,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319468290] [2021-11-09 08:59:07,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319468290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:07,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:07,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:59:07,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872493112] [2021-11-09 08:59:07,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:07,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:07,926 INFO L87 Difference]: Start difference. First operand 1050 states and 1156 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) [2021-11-09 08:59:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:08,233 INFO L93 Difference]: Finished difference Result 1512 states and 1653 transitions. [2021-11-09 08:59:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:08,234 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 [2021-11-09 08:59:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:08,242 INFO L225 Difference]: With dead ends: 1512 [2021-11-09 08:59:08,242 INFO L226 Difference]: Without dead ends: 1512 [2021-11-09 08:59:08,243 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 [2021-11-09 08:59:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-09 08:59:08,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1219. [2021-11-09 08:59:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 751 states have (on average 1.8974700399467377) internal successors, (1425), 1207 states have internal predecessors, (1425), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1448 transitions. [2021-11-09 08:59:08,277 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1448 transitions. Word has length 15 [2021-11-09 08:59:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:08,278 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1448 transitions. [2021-11-09 08:59:08,278 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) [2021-11-09 08:59:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1448 transitions. [2021-11-09 08:59:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:59:08,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:08,279 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:08,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:08,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:08,503 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:08,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash 522513117, now seen corresponding path program 1 times [2021-11-09 08:59:08,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:08,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425829430] [2021-11-09 08:59:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:08,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:08,505 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:08,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:59:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:08,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:59:08,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:08,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:08,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:08,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425829430] [2021-11-09 08:59:08,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425829430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:08,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:08,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:59:08,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049335730] [2021-11-09 08:59:08,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:08,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:08,824 INFO L87 Difference]: Start difference. First operand 1219 states and 1448 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) [2021-11-09 08:59:08,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:08,870 INFO L93 Difference]: Finished difference Result 1373 states and 1588 transitions. [2021-11-09 08:59:08,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:08,871 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 [2021-11-09 08:59:08,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:08,879 INFO L225 Difference]: With dead ends: 1373 [2021-11-09 08:59:08,879 INFO L226 Difference]: Without dead ends: 1373 [2021-11-09 08:59:08,880 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 [2021-11-09 08:59:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2021-11-09 08:59:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1159. [2021-11-09 08:59:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 715 states have (on average 1.8727272727272728) internal successors, (1339), 1147 states have internal predecessors, (1339), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1362 transitions. [2021-11-09 08:59:08,930 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1362 transitions. Word has length 17 [2021-11-09 08:59:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:08,930 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1362 transitions. [2021-11-09 08:59:08,930 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) [2021-11-09 08:59:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1362 transitions. [2021-11-09 08:59:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 08:59:08,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:08,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:08,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:09,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:09,145 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash 905393921, now seen corresponding path program 1 times [2021-11-09 08:59:09,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:09,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139193128] [2021-11-09 08:59:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:09,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:09,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:09,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:09,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 08:59:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:09,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:09,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:09,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:59:09,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:59:09,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:59:09,491 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-09 08:59:09,492 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 [2021-11-09 08:59:09,575 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-09 08:59:09,575 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 [2021-11-09 08:59:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:09,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:09,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:09,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139193128] [2021-11-09 08:59:09,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139193128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:09,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:09,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:59:09,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509456373] [2021-11-09 08:59:09,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:59:09,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:59:09,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:59:09,710 INFO L87 Difference]: Start difference. First operand 1159 states and 1362 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) [2021-11-09 08:59:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:12,213 INFO L93 Difference]: Finished difference Result 1474 states and 1710 transitions. [2021-11-09 08:59:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:12,214 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 [2021-11-09 08:59:12,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:12,220 INFO L225 Difference]: With dead ends: 1474 [2021-11-09 08:59:12,221 INFO L226 Difference]: Without dead ends: 1474 [2021-11-09 08:59:12,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:59:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-09 08:59:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1158. [2021-11-09 08:59:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 714 states have (on average 1.8725490196078431) internal successors, (1337), 1146 states have internal predecessors, (1337), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1360 transitions. [2021-11-09 08:59:12,253 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1360 transitions. Word has length 18 [2021-11-09 08:59:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:12,253 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1360 transitions. [2021-11-09 08:59:12,254 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) [2021-11-09 08:59:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1360 transitions. [2021-11-09 08:59:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 08:59:12,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:12,255 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] [2021-11-09 08:59:12,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:12,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:12,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 957770193, now seen corresponding path program 1 times [2021-11-09 08:59:12,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:12,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225743151] [2021-11-09 08:59:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:12,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:12,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:12,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 08:59:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:12,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:59:12,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:12,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:12,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:12,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225743151] [2021-11-09 08:59:12,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225743151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:12,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:12,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:59:12,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715660870] [2021-11-09 08:59:12,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:12,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:12,959 INFO L87 Difference]: Start difference. First operand 1158 states and 1360 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) [2021-11-09 08:59:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:12,992 INFO L93 Difference]: Finished difference Result 1098 states and 1274 transitions. [2021-11-09 08:59:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:12,993 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 [2021-11-09 08:59:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:12,997 INFO L225 Difference]: With dead ends: 1098 [2021-11-09 08:59:12,998 INFO L226 Difference]: Without dead ends: 1098 [2021-11-09 08:59:12,998 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 [2021-11-09 08:59:13,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-09 08:59:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2021-11-09 08:59:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 678 states have (on average 1.845132743362832) internal successors, (1251), 1086 states have internal predecessors, (1251), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1274 transitions. [2021-11-09 08:59:13,023 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1274 transitions. Word has length 22 [2021-11-09 08:59:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:13,024 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 1274 transitions. [2021-11-09 08:59:13,024 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) [2021-11-09 08:59:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1274 transitions. [2021-11-09 08:59:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:59:13,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:13,025 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] [2021-11-09 08:59:13,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-09 08:59:13,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:13,240 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1294153163, now seen corresponding path program 1 times [2021-11-09 08:59:13,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:13,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302729086] [2021-11-09 08:59:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:13,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:13,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:13,243 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:13,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 08:59:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:13,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:13,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:13,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:13,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:13,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302729086] [2021-11-09 08:59:13,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302729086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:13,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:13,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 08:59:13,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919237222] [2021-11-09 08:59:13,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:59:13,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:59:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:59:13,639 INFO L87 Difference]: Start difference. First operand 1098 states and 1274 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) [2021-11-09 08:59:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:13,729 INFO L93 Difference]: Finished difference Result 1070 states and 1218 transitions. [2021-11-09 08:59:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:13,730 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 [2021-11-09 08:59:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:13,735 INFO L225 Difference]: With dead ends: 1070 [2021-11-09 08:59:13,736 INFO L226 Difference]: Without dead ends: 1070 [2021-11-09 08:59:13,736 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 [2021-11-09 08:59:13,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-09 08:59:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2021-11-09 08:59:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 662 states have (on average 1.8021148036253776) internal successors, (1193), 1056 states have internal predecessors, (1193), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1216 transitions. [2021-11-09 08:59:13,760 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1216 transitions. Word has length 24 [2021-11-09 08:59:13,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:13,760 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1216 transitions. [2021-11-09 08:59:13,760 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) [2021-11-09 08:59:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1216 transitions. [2021-11-09 08:59:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:59:13,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:13,762 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] [2021-11-09 08:59:13,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:13,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:13,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash 62146457, now seen corresponding path program 1 times [2021-11-09 08:59:13,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:13,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482529996] [2021-11-09 08:59:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:13,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:13,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:13,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:13,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 08:59:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:14,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:14,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:14,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:14,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:14,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:14,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482529996] [2021-11-09 08:59:14,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482529996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:14,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:14,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:59:14,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156489690] [2021-11-09 08:59:14,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:14,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:14,602 INFO L87 Difference]: Start difference. First operand 1068 states and 1216 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) [2021-11-09 08:59:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:17,023 INFO L93 Difference]: Finished difference Result 1499 states and 1713 transitions. [2021-11-09 08:59:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:59:17,024 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 [2021-11-09 08:59:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:17,032 INFO L225 Difference]: With dead ends: 1499 [2021-11-09 08:59:17,032 INFO L226 Difference]: Without dead ends: 1499 [2021-11-09 08:59:17,033 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 [2021-11-09 08:59:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-11-09 08:59:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1064. [2021-11-09 08:59:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 662 states have (on average 1.7900302114803626) internal successors, (1185), 1052 states have internal predecessors, (1185), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1208 transitions. [2021-11-09 08:59:17,062 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1208 transitions. Word has length 38 [2021-11-09 08:59:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:17,063 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1208 transitions. [2021-11-09 08:59:17,063 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) [2021-11-09 08:59:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1208 transitions. [2021-11-09 08:59:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:59:17,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:17,065 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] [2021-11-09 08:59:17,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:17,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:17,278 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash 62146458, now seen corresponding path program 1 times [2021-11-09 08:59:17,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:17,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885255735] [2021-11-09 08:59:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:17,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:17,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:17,281 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:17,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 08:59:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:17,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:59:17,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:17,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:18,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:18,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:18,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885255735] [2021-11-09 08:59:18,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885255735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:18,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:18,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:59:18,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480567842] [2021-11-09 08:59:18,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:59:18,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:59:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:59:18,641 INFO L87 Difference]: Start difference. First operand 1064 states and 1208 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) [2021-11-09 08:59:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:26,520 INFO L93 Difference]: Finished difference Result 1553 states and 1730 transitions. [2021-11-09 08:59:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:59:26,522 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 [2021-11-09 08:59:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:26,528 INFO L225 Difference]: With dead ends: 1553 [2021-11-09 08:59:26,528 INFO L226 Difference]: Without dead ends: 1553 [2021-11-09 08:59:26,528 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 [2021-11-09 08:59:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-11-09 08:59:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1060. [2021-11-09 08:59:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 662 states have (on average 1.7779456193353473) internal successors, (1177), 1048 states have internal predecessors, (1177), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1200 transitions. [2021-11-09 08:59:26,553 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1200 transitions. Word has length 38 [2021-11-09 08:59:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:26,554 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1200 transitions. [2021-11-09 08:59:26,554 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) [2021-11-09 08:59:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1200 transitions. [2021-11-09 08:59:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 08:59:26,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:26,556 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] [2021-11-09 08:59:26,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:26,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:26,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:26,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2044490264, now seen corresponding path program 1 times [2021-11-09 08:59:26,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:26,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164309399] [2021-11-09 08:59:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:26,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:26,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:26,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:26,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 08:59:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:27,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:27,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:27,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:27,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:27,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164309399] [2021-11-09 08:59:27,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164309399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:27,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:27,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:59:27,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990056700] [2021-11-09 08:59:27,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:27,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:27,449 INFO L87 Difference]: Start difference. First operand 1060 states and 1200 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) [2021-11-09 08:59:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:27,514 INFO L93 Difference]: Finished difference Result 1048 states and 1180 transitions. [2021-11-09 08:59:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:27,515 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 [2021-11-09 08:59:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:27,536 INFO L225 Difference]: With dead ends: 1048 [2021-11-09 08:59:27,537 INFO L226 Difference]: Without dead ends: 1048 [2021-11-09 08:59:27,537 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 [2021-11-09 08:59:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-09 08:59:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2021-11-09 08:59:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 650 states have (on average 1.78) internal successors, (1157), 1036 states have internal predecessors, (1157), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1180 transitions. [2021-11-09 08:59:27,560 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1180 transitions. Word has length 56 [2021-11-09 08:59:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:27,560 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1180 transitions. [2021-11-09 08:59:27,561 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) [2021-11-09 08:59:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1180 transitions. [2021-11-09 08:59:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:59:27,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:27,566 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] [2021-11-09 08:59:27,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:27,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:27,787 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -594226460, now seen corresponding path program 1 times [2021-11-09 08:59:27,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:27,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203539076] [2021-11-09 08:59:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:27,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:27,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:27,789 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:27,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 08:59:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:28,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:59:28,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:28,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:28,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:29,124 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 08:59:29,124 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 25 treesize of output 27 [2021-11-09 08:59:29,147 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 08:59:29,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-09 08:59:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:29,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:34,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:34,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203539076] [2021-11-09 08:59:34,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203539076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:34,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:34,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:59:34,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137587042] [2021-11-09 08:59:34,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:59:34,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:59:34,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 08:59:34,396 INFO L87 Difference]: Start difference. First operand 1048 states and 1180 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) [2021-11-09 08:59:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:47,832 INFO L93 Difference]: Finished difference Result 1249 states and 1441 transitions. [2021-11-09 08:59:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:59:47,836 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 [2021-11-09 08:59:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:47,844 INFO L225 Difference]: With dead ends: 1249 [2021-11-09 08:59:47,844 INFO L226 Difference]: Without dead ends: 1249 [2021-11-09 08:59:47,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 08:59:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-09 08:59:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1010. [2021-11-09 08:59:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 650 states have (on average 1.7215384615384615) internal successors, (1119), 998 states have internal predecessors, (1119), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1142 transitions. [2021-11-09 08:59:47,870 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1142 transitions. Word has length 64 [2021-11-09 08:59:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:47,870 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1142 transitions. [2021-11-09 08:59:47,870 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) [2021-11-09 08:59:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1142 transitions. [2021-11-09 08:59:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:59:47,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:47,872 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] [2021-11-09 08:59:47,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:48,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:48,089 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash -788480025, now seen corresponding path program 1 times [2021-11-09 08:59:48,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:48,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405009976] [2021-11-09 08:59:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:48,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:48,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:48,091 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:48,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 08:59:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:48,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:59:48,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:48,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:48,955 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 [2021-11-09 08:59:49,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 08:59:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:49,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:49,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:49,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405009976] [2021-11-09 08:59:49,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405009976] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:49,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:49,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:59:49,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350931308] [2021-11-09 08:59:49,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:59:49,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:59:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:59:49,173 INFO L87 Difference]: Start difference. First operand 1010 states and 1142 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) [2021-11-09 08:59:52,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:52,638 INFO L93 Difference]: Finished difference Result 1009 states and 1141 transitions. [2021-11-09 08:59:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:59:52,644 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 [2021-11-09 08:59:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:52,649 INFO L225 Difference]: With dead ends: 1009 [2021-11-09 08:59:52,649 INFO L226 Difference]: Without dead ends: 1009 [2021-11-09 08:59:52,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:59:52,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2021-11-09 08:59:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1009. [2021-11-09 08:59:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 650 states have (on average 1.72) internal successors, (1118), 997 states have internal predecessors, (1118), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:59:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1141 transitions. [2021-11-09 08:59:52,669 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1141 transitions. Word has length 69 [2021-11-09 08:59:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:52,669 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1141 transitions. [2021-11-09 08:59:52,670 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) [2021-11-09 08:59:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1141 transitions. [2021-11-09 08:59:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:59:52,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:52,671 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] [2021-11-09 08:59:52,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-09 08:59:52,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:52,893 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:59:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:52,894 INFO L85 PathProgramCache]: Analyzing trace with hash -788480024, now seen corresponding path program 1 times [2021-11-09 08:59:52,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:52,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136872190] [2021-11-09 08:59:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:52,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:52,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:52,896 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:52,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 08:59:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:53,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:59:53,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:53,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:53,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 08:59:53,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-09 08:59:53,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-09 08:59:53,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 08:59:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:53,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:54,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:54,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136872190] [2021-11-09 08:59:54,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136872190] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:54,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:54,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 08:59:54,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750634442] [2021-11-09 08:59:54,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:59:54,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:59:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:59:54,244 INFO L87 Difference]: Start difference. First operand 1009 states and 1141 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) [2021-11-09 09:00:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:03,657 INFO L93 Difference]: Finished difference Result 1008 states and 1140 transitions. [2021-11-09 09:00:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:00:03,658 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 [2021-11-09 09:00:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:03,662 INFO L225 Difference]: With dead ends: 1008 [2021-11-09 09:00:03,662 INFO L226 Difference]: Without dead ends: 1008 [2021-11-09 09:00:03,663 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 [2021-11-09 09:00:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-09 09:00:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2021-11-09 09:00:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 649 states have (on average 1.7211093990755009) internal successors, (1117), 996 states have internal predecessors, (1117), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 09:00:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1140 transitions. [2021-11-09 09:00:03,680 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1140 transitions. Word has length 69 [2021-11-09 09:00:03,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:03,680 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1140 transitions. [2021-11-09 09:00:03,681 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) [2021-11-09 09:00:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1140 transitions. [2021-11-09 09:00:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:00:03,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:03,682 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] [2021-11-09 09:00:03,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:03,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:03,912 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:00:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2105370958, now seen corresponding path program 1 times [2021-11-09 09:00:03,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:03,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345115082] [2021-11-09 09:00:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:00:03,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:03,914 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:03,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 09:00:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:00:04,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:00:04,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:04,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:04,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:04,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345115082] [2021-11-09 09:00:04,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345115082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:00:04,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:00:04,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:00:04,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764542952] [2021-11-09 09:00:04,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:00:04,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:00:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:00:04,913 INFO L87 Difference]: Start difference. First operand 1008 states and 1140 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) [2021-11-09 09:00:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:05,011 INFO L93 Difference]: Finished difference Result 1018 states and 1153 transitions. [2021-11-09 09:00:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:00:05,012 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 [2021-11-09 09:00:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:05,018 INFO L225 Difference]: With dead ends: 1018 [2021-11-09 09:00:05,018 INFO L226 Difference]: Without dead ends: 1018 [2021-11-09 09:00:05,018 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 [2021-11-09 09:00:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-09 09:00:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1018. [2021-11-09 09:00:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 657 states have (on average 1.7184170471841704) internal successors, (1129), 1005 states have internal predecessors, (1129), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:00:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1153 transitions. [2021-11-09 09:00:05,041 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1153 transitions. Word has length 77 [2021-11-09 09:00:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:05,042 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1153 transitions. [2021-11-09 09:00:05,042 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) [2021-11-09 09:00:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1153 transitions. [2021-11-09 09:00:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:00:05,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:05,043 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] [2021-11-09 09:00:05,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:05,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:05,259 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:00:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash -221256690, now seen corresponding path program 1 times [2021-11-09 09:00:05,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:05,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088471042] [2021-11-09 09:00:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:00:05,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:05,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:05,260 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:05,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 09:00:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:00:05,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:00:05,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:06,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:06,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:06,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088471042] [2021-11-09 09:00:06,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088471042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:06,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:06,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:00:06,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152222056] [2021-11-09 09:00:06,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:00:06,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:00:06,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:00:06,315 INFO L87 Difference]: Start difference. First operand 1018 states and 1153 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) [2021-11-09 09:00:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:06,730 INFO L93 Difference]: Finished difference Result 1032 states and 1171 transitions. [2021-11-09 09:00:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:00:06,731 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 [2021-11-09 09:00:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:06,736 INFO L225 Difference]: With dead ends: 1032 [2021-11-09 09:00:06,736 INFO L226 Difference]: Without dead ends: 1028 [2021-11-09 09:00:06,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:00:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-11-09 09:00:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1024. [2021-11-09 09:00:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 663 states have (on average 1.7149321266968325) internal successors, (1137), 1011 states have internal predecessors, (1137), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:00:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1161 transitions. [2021-11-09 09:00:06,752 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1161 transitions. Word has length 79 [2021-11-09 09:00:06,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:06,752 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1161 transitions. [2021-11-09 09:00:06,753 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) [2021-11-09 09:00:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1161 transitions. [2021-11-09 09:00:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:00:06,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:06,754 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] [2021-11-09 09:00:06,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-09 09:00:06,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:06,987 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:00:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:06,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1685730930, now seen corresponding path program 2 times [2021-11-09 09:00:06,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:06,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291284096] [2021-11-09 09:00:06,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:00:06,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:06,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:06,989 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:06,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 09:00:07,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:00:07,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:07,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:00:07,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:08,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:08,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:08,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291284096] [2021-11-09 09:00:08,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291284096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:08,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:08,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 09:00:08,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863692715] [2021-11-09 09:00:08,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:00:08,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:00:08,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:00:08,810 INFO L87 Difference]: Start difference. First operand 1024 states and 1161 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) [2021-11-09 09:00:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:10,406 INFO L93 Difference]: Finished difference Result 1052 states and 1199 transitions. [2021-11-09 09:00:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:00:10,407 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 [2021-11-09 09:00:10,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:10,412 INFO L225 Difference]: With dead ends: 1052 [2021-11-09 09:00:10,412 INFO L226 Difference]: Without dead ends: 1048 [2021-11-09 09:00:10,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:00:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-09 09:00:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1036. [2021-11-09 09:00:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 675 states have (on average 1.7081481481481482) internal successors, (1153), 1023 states have internal predecessors, (1153), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:00:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1177 transitions. [2021-11-09 09:00:10,430 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1177 transitions. Word has length 83 [2021-11-09 09:00:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:10,431 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1177 transitions. [2021-11-09 09:00:10,431 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) [2021-11-09 09:00:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1177 transitions. [2021-11-09 09:00:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:00:10,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:10,433 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] [2021-11-09 09:00:10,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:10,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:10,649 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:00:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash 17126542, now seen corresponding path program 3 times [2021-11-09 09:00:10,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:10,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892265701] [2021-11-09 09:00:10,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:00:10,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:10,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:10,651 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:10,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 09:00:12,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 09:00:12,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:12,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 09:00:12,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:12,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:14,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:14,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892265701] [2021-11-09 09:00:14,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892265701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:14,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:14,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 09:00:14,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876704951] [2021-11-09 09:00:14,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 09:00:14,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 09:00:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:00:14,594 INFO L87 Difference]: Start difference. First operand 1036 states and 1177 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) [2021-11-09 09:00:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:22,535 INFO L93 Difference]: Finished difference Result 1092 states and 1261 transitions. [2021-11-09 09:00:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 09:00:22,535 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 [2021-11-09 09:00:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:22,541 INFO L225 Difference]: With dead ends: 1092 [2021-11-09 09:00:22,541 INFO L226 Difference]: Without dead ends: 1086 [2021-11-09 09:00:22,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 09:00:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-11-09 09:00:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1060. [2021-11-09 09:00:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 699 states have (on average 1.693848354792561) internal successors, (1184), 1047 states have internal predecessors, (1184), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:00:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1208 transitions. [2021-11-09 09:00:22,561 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1208 transitions. Word has length 91 [2021-11-09 09:00:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:22,561 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1208 transitions. [2021-11-09 09:00:22,562 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) [2021-11-09 09:00:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1208 transitions. [2021-11-09 09:00:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 09:00:22,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:22,563 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] [2021-11-09 09:00:22,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:22,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:22,772 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:00:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1658022542, now seen corresponding path program 4 times [2021-11-09 09:00:22,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:22,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817560181] [2021-11-09 09:00:22,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:00:22,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:22,774 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:22,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 09:00:23,522 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:00:23,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:23,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:00:23,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:24,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:28,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:28,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817560181] [2021-11-09 09:00:28,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817560181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:28,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:28,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 09:00:28,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006233] [2021-11-09 09:00:28,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 09:00:28,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 09:00:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:00:28,953 INFO L87 Difference]: Start difference. First operand 1060 states and 1208 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) [2021-11-09 09:00:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:45,147 INFO L93 Difference]: Finished difference Result 1152 states and 1328 transitions. [2021-11-09 09:00:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 09:00:45,148 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 [2021-11-09 09:00:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:45,156 INFO L225 Difference]: With dead ends: 1152 [2021-11-09 09:00:45,156 INFO L226 Difference]: Without dead ends: 1148 [2021-11-09 09:00:45,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 09:00:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-09 09:00:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1090. [2021-11-09 09:00:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 729 states have (on average 1.6872427983539096) internal successors, (1230), 1077 states have internal predecessors, (1230), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:00:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1254 transitions. [2021-11-09 09:00:45,194 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1254 transitions. Word has length 107 [2021-11-09 09:00:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:45,195 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1254 transitions. [2021-11-09 09:00:45,195 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) [2021-11-09 09:00:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1254 transitions. [2021-11-09 09:00:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 09:00:45,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:45,197 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] [2021-11-09 09:00:45,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:45,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:45,412 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 09:00:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash 706749902, now seen corresponding path program 5 times [2021-11-09 09:00:45,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:45,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556315213] [2021-11-09 09:00:45,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:00:45,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:45,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:45,414 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:45,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0e7ed4-73e8-4a8c-91b6-594182adca53/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-09 09:00:47,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 09:00:47,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:47,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 09:00:47,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:47,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:00:47,955 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:00:47,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-09 09:00:48,006 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 [2021-11-09 09:00:48,206 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