./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:51:18,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:51:18,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:51:18,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:51:18,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:51:18,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:51:18,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:51:18,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:51:18,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:51:18,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:51:18,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:51:18,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:51:18,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:51:18,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:51:18,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:51:18,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:51:18,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:51:18,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:51:18,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:51:18,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:51:18,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:51:18,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:51:18,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:51:18,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:51:18,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:51:18,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:51:18,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:51:18,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:51:18,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:51:18,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:51:18,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:51:18,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:51:18,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:51:18,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:51:18,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:51:18,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:51:18,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:51:18,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:51:18,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:51:18,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:51:18,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:51:18,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:51:18,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:51:18,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:51:18,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:51:18,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:51:18,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:51:18,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:51:18,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:51:18,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:51:18,324 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:51:18,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:51:18,325 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:51:18,325 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:51:18,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:51:18,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:51:18,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:51:18,326 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:51:18,326 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:51:18,326 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:51:18,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:51:18,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:51:18,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:51:18,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:51:18,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:51:18,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:51:18,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:51:18,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:18,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:51:18,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:51:18,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:51:18,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:51:18,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:51:18,329 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-11-13 17:51:18,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:51:18,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:51:18,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:51:18,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:51:18,587 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:51:18,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-13 17:51:18,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/b53fdb7aa/b9d4c79f8aa04c01a37056957edce0ac/FLAGaf6141a14 [2021-11-13 17:51:19,291 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:51:19,291 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-13 17:51:19,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/b53fdb7aa/b9d4c79f8aa04c01a37056957edce0ac/FLAGaf6141a14 [2021-11-13 17:51:19,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/b53fdb7aa/b9d4c79f8aa04c01a37056957edce0ac [2021-11-13 17:51:19,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:51:19,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:51:19,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:19,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:51:19,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:51:19,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743ba427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:19, skipping insertion in model container [2021-11-13 17:51:19,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:19" (1/1) ... [2021-11-13 17:51:19,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:51:19,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:51:19,987 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-13 17:51:20,149 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-13 17:51:20,150 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-13 17:51:20,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:20,175 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) [2021-11-13 17:51:20,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@347f1f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:20, skipping insertion in model container [2021-11-13 17:51:20,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:20,176 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:51:20,178 INFO L158 Benchmark]: Toolchain (without parser) took 642.30ms. Allocated memory is still 102.8MB. Free memory was 72.5MB in the beginning and 66.9MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:51:20,179 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 83.9MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:20,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.40ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 66.9MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:51:20,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 83.9MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.40ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 66.9MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:51:22,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:51:22,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:51:22,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:51:22,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:51:22,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:51:22,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:51:22,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:51:22,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:51:22,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:51:22,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:51:22,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:51:22,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:51:22,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:51:22,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:51:22,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:51:22,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:51:22,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:51:22,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:51:22,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:51:22,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:51:22,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:51:22,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:51:22,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:51:22,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:51:22,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:51:22,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:51:22,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:51:22,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:51:22,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:51:22,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:51:22,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:51:22,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:51:22,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:51:22,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:51:22,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:51:22,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:51:22,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:51:22,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:51:22,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:51:22,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:51:22,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:51:22,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:51:22,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:51:22,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:51:22,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:51:22,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:51:22,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:51:22,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:51:22,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:51:22,627 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:51:22,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:51:22,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:51:22,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:51:22,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:51:22,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:51:22,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:51:22,630 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:51:22,630 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:51:22,630 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:51:22,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:51:22,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:51:22,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:51:22,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:51:22,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:51:22,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:51:22,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:51:22,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:51:22,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:51:22,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:22,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:51:22,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:51:22,633 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:51:22,633 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:51:22,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:51:22,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:51:22,634 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-11-13 17:51:23,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:51:23,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:51:23,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:51:23,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:51:23,091 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:51:23,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-13 17:51:23,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/beccfa9fe/8ec71372f860496783572b03a6874257/FLAGfd5770742 [2021-11-13 17:51:23,907 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:51:23,912 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-13 17:51:23,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/beccfa9fe/8ec71372f860496783572b03a6874257/FLAGfd5770742 [2021-11-13 17:51:24,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/data/beccfa9fe/8ec71372f860496783572b03a6874257 [2021-11-13 17:51:24,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:51:24,116 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:51:24,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:24,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:51:24,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:51:24,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:24" (1/1) ... [2021-11-13 17:51:24,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e48538b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:24, skipping insertion in model container [2021-11-13 17:51:24,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:24" (1/1) ... [2021-11-13 17:51:24,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:51:24,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:51:24,654 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-13 17:51:24,782 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-13 17:51:24,783 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-13 17:51:24,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:24,814 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:51:24,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:51:24,882 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-13 17:51:24,974 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-13 17:51:24,975 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-13 17:51:24,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:24,991 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:51:25,020 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-13 17:51:25,067 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-13 17:51:25,068 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_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-13 17:51:25,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:25,155 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:51:25,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25 WrapperNode [2021-11-13 17:51:25,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:25,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:51:25,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:51:25,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:51:25,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:51:25,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:51:25,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:51:25,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:51:25,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (1/1) ... [2021-11-13 17:51:25,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:25,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:25,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:51:25,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:51:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:51:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:51:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:51:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:51:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:51:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:51:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:51:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:51:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:51:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:51:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:51:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:51:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:51:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:51:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:51:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:51:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:51:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:51:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:51:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:51:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:51:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:51:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:51:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:51:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:51:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:51:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:51:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:51:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:51:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:51:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:51:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:51:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:51:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:51:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:51:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:51:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:51:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:51:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:51:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:51:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:51:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:51:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:51:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:51:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:51:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:51:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:51:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:51:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:51:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:51:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:51:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:51:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:51:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:51:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:51:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:51:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:51:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:51:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:51:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:51:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:51:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:51:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:51:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:51:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:51:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:51:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:51:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:51:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:51:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:51:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:51:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:51:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:51:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:51:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:51:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:51:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:51:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:51:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:51:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:51:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:51:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:51:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:51:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:51:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:51:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:51:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:51:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:51:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:51:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:51:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:51:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:51:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:51:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:51:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:51:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:51:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:51:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:51:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:51:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:51:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:51:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:51:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:51:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:51:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:51:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:51:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:51:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:51:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:51:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:51:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:51:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:51:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:51:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:51:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:51:25,993 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:51:31,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:51:31,367 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-13 17:51:31,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:31 BoogieIcfgContainer [2021-11-13 17:51:31,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:51:31,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:51:31,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:51:31,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:51:31,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:51:24" (1/3) ... [2021-11-13 17:51:31,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8eac1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:31, skipping insertion in model container [2021-11-13 17:51:31,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:25" (2/3) ... [2021-11-13 17:51:31,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8eac1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:31, skipping insertion in model container [2021-11-13 17:51:31,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:31" (3/3) ... [2021-11-13 17:51:31,384 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-2.i [2021-11-13 17:51:31,390 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:51:31,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 636 error locations. [2021-11-13 17:51:31,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:51:31,454 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 [2021-11-13 17:51:31,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 636 error locations. [2021-11-13 17:51:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 1254 states, 613 states have (on average 2.264274061990212) internal successors, (1388), 1245 states have internal predecessors, (1388), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 17:51:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:51:31,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:31,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:31,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:31,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1781676235, now seen corresponding path program 1 times [2021-11-13 17:51:31,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:31,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103867149] [2021-11-13 17:51:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:31,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:31,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:31,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:31,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:51:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:31,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:51:31,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:31,905 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 [2021-11-13 17:51:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:31,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:31,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:31,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103867149] [2021-11-13 17:51:31,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103867149] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:31,962 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:31,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:51:31,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877087010] [2021-11-13 17:51:31,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:31,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:51:31,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:51:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:51:32,002 INFO L87 Difference]: Start difference. First operand has 1254 states, 613 states have (on average 2.264274061990212) internal successors, (1388), 1245 states have internal predecessors, (1388), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2021-11-13 17:51:34,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:34,454 INFO L93 Difference]: Finished difference Result 1422 states and 1497 transitions. [2021-11-13 17:51:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:34,458 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 [2021-11-13 17:51:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:34,484 INFO L225 Difference]: With dead ends: 1422 [2021-11-13 17:51:34,485 INFO L226 Difference]: Without dead ends: 1419 [2021-11-13 17:51:34,486 INFO L932 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 [2021-11-13 17:51:34,490 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 1160 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1897.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.30ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2329.20ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:34,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 903 Invalid, 749 Unknown, 0 Unchecked, 19.30ms Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2329.20ms Time] [2021-11-13 17:51:34,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-13 17:51:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1234. [2021-11-13 17:51:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 611 states have (on average 2.114566284779051) internal successors, (1292), 1226 states have internal predecessors, (1292), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1301 transitions. [2021-11-13 17:51:34,649 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1301 transitions. Word has length 7 [2021-11-13 17:51:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:34,650 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1301 transitions. [2021-11-13 17:51:34,650 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) [2021-11-13 17:51:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1301 transitions. [2021-11-13 17:51:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:51:34,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:34,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:34,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:34,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:34,866 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1781676236, now seen corresponding path program 1 times [2021-11-13 17:51:34,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:34,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508840157] [2021-11-13 17:51:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:34,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:34,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:34,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:51:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:35,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:35,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:35,090 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 [2021-11-13 17:51:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:35,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:35,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:35,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508840157] [2021-11-13 17:51:35,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508840157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:35,179 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:35,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:51:35,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947483861] [2021-11-13 17:51:35,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:35,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:35,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:35,182 INFO L87 Difference]: Start difference. First operand 1234 states and 1301 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) [2021-11-13 17:51:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:40,852 INFO L93 Difference]: Finished difference Result 1898 states and 2008 transitions. [2021-11-13 17:51:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:40,853 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 [2021-11-13 17:51:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:40,863 INFO L225 Difference]: With dead ends: 1898 [2021-11-13 17:51:40,863 INFO L226 Difference]: Without dead ends: 1898 [2021-11-13 17:51:40,864 INFO L932 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 [2021-11-13 17:51:40,865 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 2174 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4909.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.76ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5568.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:40,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 1600 Invalid, 1072 Unknown, 0 Unchecked, 19.76ms Time], IncrementalHoareTripleChecker [18 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 5568.87ms Time] [2021-11-13 17:51:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-11-13 17:51:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1269. [2021-11-13 17:51:40,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 655 states have (on average 2.0931297709923666) internal successors, (1371), 1261 states have internal predecessors, (1371), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1380 transitions. [2021-11-13 17:51:40,908 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1380 transitions. Word has length 7 [2021-11-13 17:51:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:40,909 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1380 transitions. [2021-11-13 17:51:40,909 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) [2021-11-13 17:51:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1380 transitions. [2021-11-13 17:51:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:51:40,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:40,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:40,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 17:51:41,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:41,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 280785758, now seen corresponding path program 1 times [2021-11-13 17:51:41,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:41,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871223535] [2021-11-13 17:51:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:41,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:41,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:41,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:41,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:51:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:41,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:51:41,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:41,359 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 [2021-11-13 17:51:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:41,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:41,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:41,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871223535] [2021-11-13 17:51:41,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871223535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:41,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:41,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:51:41,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654273129] [2021-11-13 17:51:41,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:41,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:51:41,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:51:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:51:41,419 INFO L87 Difference]: Start difference. First operand 1269 states and 1380 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) [2021-11-13 17:51:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:43,797 INFO L93 Difference]: Finished difference Result 1599 states and 1735 transitions. [2021-11-13 17:51:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:43,801 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 [2021-11-13 17:51:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:43,809 INFO L225 Difference]: With dead ends: 1599 [2021-11-13 17:51:43,809 INFO L226 Difference]: Without dead ends: 1599 [2021-11-13 17:51:43,810 INFO L932 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 [2021-11-13 17:51:43,811 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 975 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1977.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.89ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2321.05ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:43,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1487 Invalid, 868 Unknown, 0 Unchecked, 9.89ms Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2321.05ms Time] [2021-11-13 17:51:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-11-13 17:51:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1222. [2021-11-13 17:51:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 655 states have (on average 2.016793893129771) internal successors, (1321), 1214 states have internal predecessors, (1321), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1330 transitions. [2021-11-13 17:51:43,849 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1330 transitions. Word has length 12 [2021-11-13 17:51:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:43,850 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1330 transitions. [2021-11-13 17:51:43,850 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) [2021-11-13 17:51:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1330 transitions. [2021-11-13 17:51:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:51:43,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:43,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:43,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:44,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:44,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 280785759, now seen corresponding path program 1 times [2021-11-13 17:51:44,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:44,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385263992] [2021-11-13 17:51:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:44,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:44,067 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:44,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:51:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:44,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:44,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:44,286 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 [2021-11-13 17:51:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:44,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:44,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:44,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385263992] [2021-11-13 17:51:44,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385263992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:44,433 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:44,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:51:44,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367951418] [2021-11-13 17:51:44,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:44,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:44,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:44,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:44,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:44,437 INFO L87 Difference]: Start difference. First operand 1222 states and 1330 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) [2021-11-13 17:51:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:49,174 INFO L93 Difference]: Finished difference Result 1643 states and 1743 transitions. [2021-11-13 17:51:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:49,175 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 [2021-11-13 17:51:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:49,183 INFO L225 Difference]: With dead ends: 1643 [2021-11-13 17:51:49,184 INFO L226 Difference]: Without dead ends: 1643 [2021-11-13 17:51:49,184 INFO L932 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 [2021-11-13 17:51:49,185 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 1392 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4183.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.11ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4685.72ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:49,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 1832 Invalid, 879 Unknown, 0 Unchecked, 12.11ms Time], IncrementalHoareTripleChecker [14 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 4685.72ms Time] [2021-11-13 17:51:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-13 17:51:49,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1212. [2021-11-13 17:51:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 655 states have (on average 1.9969465648854963) internal successors, (1308), 1204 states have internal predecessors, (1308), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1317 transitions. [2021-11-13 17:51:49,218 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1317 transitions. Word has length 12 [2021-11-13 17:51:49,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:49,218 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1317 transitions. [2021-11-13 17:51:49,219 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) [2021-11-13 17:51:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1317 transitions. [2021-11-13 17:51:49,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:51:49,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:49,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:49,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:49,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:49,431 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1790420342, now seen corresponding path program 1 times [2021-11-13 17:51:49,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:49,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2499373] [2021-11-13 17:51:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:49,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:49,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:49,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:49,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:51:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:51:49,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:49,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:49,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:49,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2499373] [2021-11-13 17:51:49,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2499373] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:49,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:49,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:51:49,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029334495] [2021-11-13 17:51:49,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:49,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:49,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:49,834 INFO L87 Difference]: Start difference. First operand 1212 states and 1317 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-13 17:51:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:50,742 INFO L93 Difference]: Finished difference Result 1855 states and 2002 transitions. [2021-11-13 17:51:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:51:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2021-11-13 17:51:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:50,751 INFO L225 Difference]: With dead ends: 1855 [2021-11-13 17:51:50,751 INFO L226 Difference]: Without dead ends: 1855 [2021-11-13 17:51:50,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:50,753 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 754 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 736.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.67ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 861.45ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:50,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3663 Invalid, 365 Unknown, 0 Unchecked, 8.67ms Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 861.45ms Time] [2021-11-13 17:51:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-13 17:51:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1453. [2021-11-13 17:51:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 896 states have (on average 1.9676339285714286) internal successors, (1763), 1445 states have internal predecessors, (1763), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1772 transitions. [2021-11-13 17:51:50,790 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1772 transitions. Word has length 15 [2021-11-13 17:51:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:50,791 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1772 transitions. [2021-11-13 17:51:50,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-13 17:51:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1772 transitions. [2021-11-13 17:51:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:51:50,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:50,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:50,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:51,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:51,006 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:51,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2028654046, now seen corresponding path program 1 times [2021-11-13 17:51:51,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:51,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217620345] [2021-11-13 17:51:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:51,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:51,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:51,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:51:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:51:51,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:51,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:51,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:51,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217620345] [2021-11-13 17:51:51,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217620345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:51,251 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:51,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:51:51,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862385992] [2021-11-13 17:51:51,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:51,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:51,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:51,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:51,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:51,253 INFO L87 Difference]: Start difference. First operand 1453 states and 1772 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) [2021-11-13 17:51:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:51,294 INFO L93 Difference]: Finished difference Result 1615 states and 1920 transitions. [2021-11-13 17:51:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:51,294 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 [2021-11-13 17:51:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:51,303 INFO L225 Difference]: With dead ends: 1615 [2021-11-13 17:51:51,303 INFO L226 Difference]: Without dead ends: 1615 [2021-11-13 17:51:51,303 INFO L932 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 [2021-11-13 17:51:51,304 INFO L933 BasicCegarLoop]: 1188 mSDtfsCounter, 583 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.42ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:51,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2834 Invalid, 12 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 15.42ms Time] [2021-11-13 17:51:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-13 17:51:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1393. [2021-11-13 17:51:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 860 states have (on average 1.95) internal successors, (1677), 1385 states have internal predecessors, (1677), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1686 transitions. [2021-11-13 17:51:51,339 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1686 transitions. Word has length 17 [2021-11-13 17:51:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:51,339 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1686 transitions. [2021-11-13 17:51:51,339 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) [2021-11-13 17:51:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1686 transitions. [2021-11-13 17:51:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 17:51:51,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:51,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:51,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:51,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:51,553 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr364REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash -378587592, now seen corresponding path program 1 times [2021-11-13 17:51:51,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:51,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948501704] [2021-11-13 17:51:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:51,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:51,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:51,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:51,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:51:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:51,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:51,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:51,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:51,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948501704] [2021-11-13 17:51:51,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948501704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:51,865 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:51,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:51:51,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847594419] [2021-11-13 17:51:51,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:51,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:51,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:51,867 INFO L87 Difference]: Start difference. First operand 1393 states and 1686 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-13 17:51:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:51,956 INFO L93 Difference]: Finished difference Result 1587 states and 1864 transitions. [2021-11-13 17:51:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-11-13 17:51:51,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:51,965 INFO L225 Difference]: With dead ends: 1587 [2021-11-13 17:51:51,965 INFO L226 Difference]: Without dead ends: 1587 [2021-11-13 17:51:51,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:51,967 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 554 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.65ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.16ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:51,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3926 Invalid, 64 Unknown, 0 Unchecked, 6.65ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 52.16ms Time] [2021-11-13 17:51:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-13 17:51:52,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1363. [2021-11-13 17:51:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 844 states have (on average 1.9182464454976302) internal successors, (1619), 1355 states have internal predecessors, (1619), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:52,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1628 transitions. [2021-11-13 17:51:52,019 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1628 transitions. Word has length 19 [2021-11-13 17:51:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:52,020 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1628 transitions. [2021-11-13 17:51:52,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-13 17:51:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1628 transitions. [2021-11-13 17:51:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 17:51:52,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:52,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:52,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:52,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:52,233 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr634ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:52,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:52,234 INFO L85 PathProgramCache]: Analyzing trace with hash 269057696, now seen corresponding path program 1 times [2021-11-13 17:51:52,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:52,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980964170] [2021-11-13 17:51:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:52,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:52,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:52,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:52,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:51:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:52,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:52,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:51:52,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:51:52,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:51:52,497 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 17:51:52,497 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 [2021-11-13 17:51:52,577 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 17:51:52,577 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 [2021-11-13 17:51:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:52,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:52,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:52,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980964170] [2021-11-13 17:51:52,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980964170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:52,704 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:52,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:51:52,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104564339] [2021-11-13 17:51:52,704 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:52,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:51:52,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:52,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:51:52,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:52,705 INFO L87 Difference]: Start difference. First operand 1363 states and 1628 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-11-13 17:51:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:53,965 INFO L93 Difference]: Finished difference Result 1799 states and 2123 transitions. [2021-11-13 17:51:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:53,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2021-11-13 17:51:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:53,975 INFO L225 Difference]: With dead ends: 1799 [2021-11-13 17:51:53,975 INFO L226 Difference]: Without dead ends: 1799 [2021-11-13 17:51:53,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:53,976 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 848 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1042.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1205.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:53,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 3223 Invalid, 232 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [4 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1205.47ms Time] [2021-11-13 17:51:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-11-13 17:51:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1362. [2021-11-13 17:51:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 843 states have (on average 1.9181494661921707) internal successors, (1617), 1354 states have internal predecessors, (1617), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1626 transitions. [2021-11-13 17:51:54,011 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1626 transitions. Word has length 20 [2021-11-13 17:51:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:54,011 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1626 transitions. [2021-11-13 17:51:54,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-11-13 17:51:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1626 transitions. [2021-11-13 17:51:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 17:51:54,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:54,013 INFO L514 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] [2021-11-13 17:51:54,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:54,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:54,231 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1911428918, now seen corresponding path program 1 times [2021-11-13 17:51:54,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:54,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972991492] [2021-11-13 17:51:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:54,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:54,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:54,241 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:54,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:51:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:54,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:51:54,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:54,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:54,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:54,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972991492] [2021-11-13 17:51:54,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972991492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:54,536 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:54,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:51:54,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446973349] [2021-11-13 17:51:54,536 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:54,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:54,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:54,538 INFO L87 Difference]: Start difference. First operand 1362 states and 1626 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) [2021-11-13 17:51:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:54,561 INFO L93 Difference]: Finished difference Result 1302 states and 1540 transitions. [2021-11-13 17:51:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:54,561 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 [2021-11-13 17:51:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:54,566 INFO L225 Difference]: With dead ends: 1302 [2021-11-13 17:51:54,566 INFO L226 Difference]: Without dead ends: 1302 [2021-11-13 17:51:54,567 INFO L932 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 [2021-11-13 17:51:54,567 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 1089 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.43ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:54,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 1163 Invalid, 12 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 11.43ms Time] [2021-11-13 17:51:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-11-13 17:51:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1302. [2021-11-13 17:51:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 807 states have (on average 1.8971499380421313) internal successors, (1531), 1294 states have internal predecessors, (1531), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1540 transitions. [2021-11-13 17:51:54,596 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1540 transitions. Word has length 22 [2021-11-13 17:51:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:54,597 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 1540 transitions. [2021-11-13 17:51:54,597 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) [2021-11-13 17:51:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1540 transitions. [2021-11-13 17:51:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:51:54,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:54,598 INFO L514 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] [2021-11-13 17:51:54,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:54,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:54,816 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1362810308, now seen corresponding path program 1 times [2021-11-13 17:51:54,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:54,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805892156] [2021-11-13 17:51:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:54,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:54,818 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:54,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:51:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:55,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:55,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:55,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:55,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805892156] [2021-11-13 17:51:55,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805892156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:55,146 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:55,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:51:55,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025908843] [2021-11-13 17:51:55,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:55,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:55,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:55,147 INFO L87 Difference]: Start difference. First operand 1302 states and 1540 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) [2021-11-13 17:51:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:55,207 INFO L93 Difference]: Finished difference Result 1274 states and 1484 transitions. [2021-11-13 17:51:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:55,208 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 [2021-11-13 17:51:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:55,214 INFO L225 Difference]: With dead ends: 1274 [2021-11-13 17:51:55,215 INFO L226 Difference]: Without dead ends: 1274 [2021-11-13 17:51:55,215 INFO L932 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 [2021-11-13 17:51:55,216 INFO L933 BasicCegarLoop]: 1064 mSDtfsCounter, 1060 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.78ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:55,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 2176 Invalid, 64 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 38.78ms Time] [2021-11-13 17:51:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-13 17:51:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1272. [2021-11-13 17:51:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 791 states have (on average 1.8621997471554994) internal successors, (1473), 1264 states have internal predecessors, (1473), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1482 transitions. [2021-11-13 17:51:55,243 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1482 transitions. Word has length 24 [2021-11-13 17:51:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:55,244 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 1482 transitions. [2021-11-13 17:51:55,244 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) [2021-11-13 17:51:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1482 transitions. [2021-11-13 17:51:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:51:55,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:55,246 INFO L514 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] [2021-11-13 17:51:55,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-13 17:51:55,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:55,458 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:55,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1184485010, now seen corresponding path program 1 times [2021-11-13 17:51:55,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:55,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343556106] [2021-11-13 17:51:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:55,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:55,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:55,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:55,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:51:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:55,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:55,707 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 [2021-11-13 17:51:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:55,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:55,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:55,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343556106] [2021-11-13 17:51:55,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343556106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:55,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:55,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:51:55,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17486693] [2021-11-13 17:51:55,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:55,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:55,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:55,961 INFO L87 Difference]: Start difference. First operand 1272 states and 1482 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) [2021-11-13 17:51:58,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:58,300 INFO L93 Difference]: Finished difference Result 1854 states and 2186 transitions. [2021-11-13 17:51:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:51:58,301 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 [2021-11-13 17:51:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:58,308 INFO L225 Difference]: With dead ends: 1854 [2021-11-13 17:51:58,308 INFO L226 Difference]: Without dead ends: 1854 [2021-11-13 17:51:58,309 INFO L932 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 [2021-11-13 17:51:58,309 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1719 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1933.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2288.78ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:58,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 1234 Invalid, 1131 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2288.78ms Time] [2021-11-13 17:51:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-11-13 17:51:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1268. [2021-11-13 17:51:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 791 states have (on average 1.852085967130215) internal successors, (1465), 1260 states have internal predecessors, (1465), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:51:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1474 transitions. [2021-11-13 17:51:58,337 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1474 transitions. Word has length 38 [2021-11-13 17:51:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:58,337 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1474 transitions. [2021-11-13 17:51:58,338 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) [2021-11-13 17:51:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1474 transitions. [2021-11-13 17:51:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:51:58,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:58,339 INFO L514 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] [2021-11-13 17:51:58,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:58,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:51:58,551 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:51:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:58,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1184485011, now seen corresponding path program 1 times [2021-11-13 17:51:58,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:51:58,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935070661] [2021-11-13 17:51:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:58,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:51:58,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:51:58,554 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:51:58,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:51:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:58,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:51:58,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:58,779 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 [2021-11-13 17:51:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:59,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:59,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:51:59,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935070661] [2021-11-13 17:51:59,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935070661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:59,503 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:59,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:51:59,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702456481] [2021-11-13 17:51:59,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:59,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:51:59,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:51:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:51:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:59,505 INFO L87 Difference]: Start difference. First operand 1268 states and 1474 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) [2021-11-13 17:52:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:07,287 INFO L93 Difference]: Finished difference Result 1981 states and 2290 transitions. [2021-11-13 17:52:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:52:07,288 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 [2021-11-13 17:52:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:07,296 INFO L225 Difference]: With dead ends: 1981 [2021-11-13 17:52:07,296 INFO L226 Difference]: Without dead ends: 1981 [2021-11-13 17:52:07,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:52:07,296 INFO L933 BasicCegarLoop]: 1361 mSDtfsCounter, 2009 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6766.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.40ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7622.56ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:07,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2009 Valid, 3017 Invalid, 2032 Unknown, 0 Unchecked, 15.40ms Time], IncrementalHoareTripleChecker [11 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 7622.56ms Time] [2021-11-13 17:52:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-11-13 17:52:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1264. [2021-11-13 17:52:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 791 states have (on average 1.8419721871049304) internal successors, (1457), 1256 states have internal predecessors, (1457), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:52:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1466 transitions. [2021-11-13 17:52:07,321 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1466 transitions. Word has length 38 [2021-11-13 17:52:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:07,322 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1466 transitions. [2021-11-13 17:52:07,322 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) [2021-11-13 17:52:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1466 transitions. [2021-11-13 17:52:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 17:52:07,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:07,323 INFO L514 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] [2021-11-13 17:52:07,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-13 17:52:07,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:07,536 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:07,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash -202104303, now seen corresponding path program 1 times [2021-11-13 17:52:07,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:07,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887537312] [2021-11-13 17:52:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:07,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:07,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:07,539 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:07,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:52:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:07,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:52:07,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:07,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:08,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:08,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887537312] [2021-11-13 17:52:08,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887537312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:08,044 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:08,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:52:08,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35788089] [2021-11-13 17:52:08,045 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:08,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:52:08,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:52:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:52:08,046 INFO L87 Difference]: Start difference. First operand 1264 states and 1466 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) [2021-11-13 17:52:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:08,101 INFO L93 Difference]: Finished difference Result 1252 states and 1446 transitions. [2021-11-13 17:52:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:52:08,102 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 [2021-11-13 17:52:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:08,109 INFO L225 Difference]: With dead ends: 1252 [2021-11-13 17:52:08,110 INFO L226 Difference]: Without dead ends: 1252 [2021-11-13 17:52:08,110 INFO L932 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 [2021-11-13 17:52:08,111 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1036 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:08,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2127 Invalid, 41 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 35.62ms Time] [2021-11-13 17:52:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-11-13 17:52:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2021-11-13 17:52:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 779 states have (on average 1.8446726572528884) internal successors, (1437), 1244 states have internal predecessors, (1437), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:52:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1446 transitions. [2021-11-13 17:52:08,133 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1446 transitions. Word has length 56 [2021-11-13 17:52:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:08,133 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1446 transitions. [2021-11-13 17:52:08,133 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) [2021-11-13 17:52:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1446 transitions. [2021-11-13 17:52:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 17:52:08,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:08,136 INFO L514 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] [2021-11-13 17:52:08,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:08,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:08,349 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash -981301539, now seen corresponding path program 1 times [2021-11-13 17:52:08,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:08,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116612191] [2021-11-13 17:52:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:08,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:08,353 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:08,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:52:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:52:08,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:08,721 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 [2021-11-13 17:52:08,727 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 [2021-11-13 17:52:09,411 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:52:09,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-13 17:52:09,430 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:52:09,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-13 17:52:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:09,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:14,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:14,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116612191] [2021-11-13 17:52:14,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116612191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:14,209 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:14,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:52:14,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747081468] [2021-11-13 17:52:14,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:14,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:52:14,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:52:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:52:14,210 INFO L87 Difference]: Start difference. First operand 1252 states and 1446 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) [2021-11-13 17:52:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:20,073 INFO L93 Difference]: Finished difference Result 1799 states and 2083 transitions. [2021-11-13 17:52:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:52:20,074 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 [2021-11-13 17:52:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:20,080 INFO L225 Difference]: With dead ends: 1799 [2021-11-13 17:52:20,080 INFO L226 Difference]: Without dead ends: 1799 [2021-11-13 17:52:20,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 17:52:20,081 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 1326 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5019.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.93ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1574 IncrementalHoareTripleChecker+Unchecked, 5771.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:20,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 2181 Invalid, 3189 Unknown, 0 Unchecked, 15.93ms Time], IncrementalHoareTripleChecker [41 Valid, 1574 Invalid, 0 Unknown, 1574 Unchecked, 5771.57ms Time] [2021-11-13 17:52:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-11-13 17:52:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1230. [2021-11-13 17:52:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 789 states have (on average 1.8035487959442331) internal successors, (1423), 1222 states have internal predecessors, (1423), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:52:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1432 transitions. [2021-11-13 17:52:20,104 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1432 transitions. Word has length 64 [2021-11-13 17:52:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:20,104 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1432 transitions. [2021-11-13 17:52:20,105 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) [2021-11-13 17:52:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1432 transitions. [2021-11-13 17:52:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:52:20,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:20,106 INFO L514 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] [2021-11-13 17:52:20,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:20,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:20,320 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:20,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1862035230, now seen corresponding path program 1 times [2021-11-13 17:52:20,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:20,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759622909] [2021-11-13 17:52:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:20,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:20,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:20,323 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:20,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:52:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:20,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:52:20,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:20,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:20,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-13 17:52:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:21,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:21,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759622909] [2021-11-13 17:52:21,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759622909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:21,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:21,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:52:21,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182483814] [2021-11-13 17:52:21,237 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:21,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:52:21,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:52:21,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:52:21,239 INFO L87 Difference]: Start difference. First operand 1230 states and 1432 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-13 17:52:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:23,506 INFO L93 Difference]: Finished difference Result 1228 states and 1430 transitions. [2021-11-13 17:52:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:52:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 66 [2021-11-13 17:52:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:23,514 INFO L225 Difference]: With dead ends: 1228 [2021-11-13 17:52:23,514 INFO L226 Difference]: Without dead ends: 1228 [2021-11-13 17:52:23,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:52:23,515 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1512 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1941.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2239.81ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:23,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 1211 Invalid, 550 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [15 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 2239.81ms Time] [2021-11-13 17:52:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-13 17:52:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1228. [2021-11-13 17:52:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 789 states have (on average 1.8010139416983524) internal successors, (1421), 1220 states have internal predecessors, (1421), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:52:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1430 transitions. [2021-11-13 17:52:23,536 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1430 transitions. Word has length 66 [2021-11-13 17:52:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:23,537 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 1430 transitions. [2021-11-13 17:52:23,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-13 17:52:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1430 transitions. [2021-11-13 17:52:23,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:52:23,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:23,538 INFO L514 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] [2021-11-13 17:52:23,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-13 17:52:23,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:23,751 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:23,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1905768216, now seen corresponding path program 1 times [2021-11-13 17:52:23,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:23,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263129048] [2021-11-13 17:52:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:23,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:23,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:23,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:23,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:52:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:24,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:52:24,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:24,167 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 [2021-11-13 17:52:24,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 17:52:24,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 17:52:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:24,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:24,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:24,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263129048] [2021-11-13 17:52:24,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263129048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:24,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:24,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:52:24,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914649018] [2021-11-13 17:52:24,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:24,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:52:24,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:52:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:52:24,374 INFO L87 Difference]: Start difference. First operand 1228 states and 1430 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) [2021-11-13 17:52:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:27,463 INFO L93 Difference]: Finished difference Result 1227 states and 1429 transitions. [2021-11-13 17:52:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:52:27,463 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 [2021-11-13 17:52:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:27,468 INFO L225 Difference]: With dead ends: 1227 [2021-11-13 17:52:27,468 INFO L226 Difference]: Without dead ends: 1227 [2021-11-13 17:52:27,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:52:27,469 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 4 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2624.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3026.12ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:27,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2600 Invalid, 1494 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 3026.12ms Time] [2021-11-13 17:52:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-11-13 17:52:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2021-11-13 17:52:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 789 states have (on average 1.799746514575412) internal successors, (1420), 1219 states have internal predecessors, (1420), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:52:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1429 transitions. [2021-11-13 17:52:27,490 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1429 transitions. Word has length 69 [2021-11-13 17:52:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:27,490 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1429 transitions. [2021-11-13 17:52:27,491 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) [2021-11-13 17:52:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1429 transitions. [2021-11-13 17:52:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:52:27,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:27,492 INFO L514 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] [2021-11-13 17:52:27,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:27,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:27,705 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:27,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1905768215, now seen corresponding path program 1 times [2021-11-13 17:52:27,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:27,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125425971] [2021-11-13 17:52:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:27,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:27,707 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:27,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:52:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:27,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:52:27,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:28,040 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 [2021-11-13 17:52:28,060 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 [2021-11-13 17:52:28,069 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 [2021-11-13 17:52:28,123 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 [2021-11-13 17:52:28,126 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 [2021-11-13 17:52:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:28,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:28,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:28,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125425971] [2021-11-13 17:52:28,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125425971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:28,475 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:28,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:52:28,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226726841] [2021-11-13 17:52:28,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:28,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:52:28,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:28,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:52:28,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:52:28,477 INFO L87 Difference]: Start difference. First operand 1227 states and 1429 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) [2021-11-13 17:52:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:37,712 INFO L93 Difference]: Finished difference Result 1226 states and 1428 transitions. [2021-11-13 17:52:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:52:37,713 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 [2021-11-13 17:52:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:37,716 INFO L225 Difference]: With dead ends: 1226 [2021-11-13 17:52:37,716 INFO L226 Difference]: Without dead ends: 1226 [2021-11-13 17:52:37,716 INFO L932 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 [2021-11-13 17:52:37,717 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 3 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8225.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9141.59ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:37,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3717 Invalid, 2418 Unknown, 0 Unchecked, 13.88ms Time], IncrementalHoareTripleChecker [1 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 9141.59ms Time] [2021-11-13 17:52:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-11-13 17:52:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1226. [2021-11-13 17:52:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 788 states have (on average 1.8007614213197969) internal successors, (1419), 1218 states have internal predecessors, (1419), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:52:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1428 transitions. [2021-11-13 17:52:37,732 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1428 transitions. Word has length 69 [2021-11-13 17:52:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:37,733 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1428 transitions. [2021-11-13 17:52:37,733 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) [2021-11-13 17:52:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1428 transitions. [2021-11-13 17:52:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 17:52:37,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:37,734 INFO L514 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] [2021-11-13 17:52:37,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:37,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:37,944 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash -566079697, now seen corresponding path program 1 times [2021-11-13 17:52:37,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:37,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044235546] [2021-11-13 17:52:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:37,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:37,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:37,945 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:37,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:52:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:38,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:52:38,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:38,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:38,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:38,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044235546] [2021-11-13 17:52:38,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044235546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:38,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:38,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:52:38,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130251486] [2021-11-13 17:52:38,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:38,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:52:38,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:52:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:52:38,466 INFO L87 Difference]: Start difference. First operand 1226 states and 1428 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) [2021-11-13 17:52:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:38,545 INFO L93 Difference]: Finished difference Result 1236 states and 1441 transitions. [2021-11-13 17:52:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:52:38,546 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 [2021-11-13 17:52:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:38,552 INFO L225 Difference]: With dead ends: 1236 [2021-11-13 17:52:38,552 INFO L226 Difference]: Without dead ends: 1236 [2021-11-13 17:52:38,553 INFO L932 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 [2021-11-13 17:52:38,553 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 9 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:38,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 3060 Invalid, 35 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 53.93ms Time] [2021-11-13 17:52:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-13 17:52:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2021-11-13 17:52:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 796 states have (on average 1.7977386934673367) internal successors, (1431), 1227 states have internal predecessors, (1431), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:52:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1441 transitions. [2021-11-13 17:52:38,579 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1441 transitions. Word has length 77 [2021-11-13 17:52:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:38,579 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1441 transitions. [2021-11-13 17:52:38,580 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) [2021-11-13 17:52:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1441 transitions. [2021-11-13 17:52:38,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 17:52:38,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:38,581 INFO L514 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] [2021-11-13 17:52:38,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:38,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:38,796 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash -191859729, now seen corresponding path program 1 times [2021-11-13 17:52:38,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:38,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090651188] [2021-11-13 17:52:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:38,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:38,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:38,798 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:38,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:52:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:39,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:52:39,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:39,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:39,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:39,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090651188] [2021-11-13 17:52:39,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090651188] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:52:39,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:52:39,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:52:39,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543763239] [2021-11-13 17:52:39,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:52:39,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:52:39,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:52:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:52:39,470 INFO L87 Difference]: Start difference. First operand 1236 states and 1441 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) [2021-11-13 17:52:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:39,923 INFO L93 Difference]: Finished difference Result 1250 states and 1459 transitions. [2021-11-13 17:52:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:52:39,924 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 [2021-11-13 17:52:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:39,929 INFO L225 Difference]: With dead ends: 1250 [2021-11-13 17:52:39,929 INFO L226 Difference]: Without dead ends: 1246 [2021-11-13 17:52:39,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:52:39,930 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 22 mSDsluCounter, 5098 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 229.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:39,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 6122 Invalid, 117 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 229.47ms Time] [2021-11-13 17:52:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-11-13 17:52:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1242. [2021-11-13 17:52:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 802 states have (on average 1.7942643391521198) internal successors, (1439), 1233 states have internal predecessors, (1439), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:52:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1449 transitions. [2021-11-13 17:52:39,952 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1449 transitions. Word has length 79 [2021-11-13 17:52:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:39,953 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1449 transitions. [2021-11-13 17:52:39,953 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) [2021-11-13 17:52:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1449 transitions. [2021-11-13 17:52:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 17:52:39,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:39,954 INFO L514 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] [2021-11-13 17:52:39,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:40,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:40,168 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -183095953, now seen corresponding path program 2 times [2021-11-13 17:52:40,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:40,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511130023] [2021-11-13 17:52:40,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:52:40,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:40,170 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:40,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:52:40,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:52:40,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:52:40,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:52:40,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:40,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:41,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:41,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511130023] [2021-11-13 17:52:41,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511130023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:52:41,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:52:41,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 17:52:41,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813330867] [2021-11-13 17:52:41,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:52:41,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:52:41,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:52:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:52:41,267 INFO L87 Difference]: Start difference. First operand 1242 states and 1449 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) [2021-11-13 17:52:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:42,557 INFO L93 Difference]: Finished difference Result 1270 states and 1487 transitions. [2021-11-13 17:52:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:52:42,558 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 [2021-11-13 17:52:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:42,561 INFO L225 Difference]: With dead ends: 1270 [2021-11-13 17:52:42,562 INFO L226 Difference]: Without dead ends: 1266 [2021-11-13 17:52:42,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 17:52:42,563 INFO L933 BasicCegarLoop]: 1028 mSDtfsCounter, 76 mSDsluCounter, 8188 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 500.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 9216 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.18ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 566.39ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:42,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 9216 Invalid, 366 Unknown, 0 Unchecked, 8.18ms Time], IncrementalHoareTripleChecker [57 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 566.39ms Time] [2021-11-13 17:52:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-11-13 17:52:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1254. [2021-11-13 17:52:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 814 states have (on average 1.7874692874692875) internal successors, (1455), 1245 states have internal predecessors, (1455), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:52:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1465 transitions. [2021-11-13 17:52:42,584 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1465 transitions. Word has length 83 [2021-11-13 17:52:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:42,585 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1465 transitions. [2021-11-13 17:52:42,585 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) [2021-11-13 17:52:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1465 transitions. [2021-11-13 17:52:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 17:52:42,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:42,586 INFO L514 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] [2021-11-13 17:52:42,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:42,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:42,792 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1558749073, now seen corresponding path program 3 times [2021-11-13 17:52:42,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:42,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652090226] [2021-11-13 17:52:42,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:52:42,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:42,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:42,794 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:42,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 17:52:43,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:52:43,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:52:43,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:52:43,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:43,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:45,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:45,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652090226] [2021-11-13 17:52:45,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652090226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:52:45,371 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:52:45,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 17:52:45,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090957200] [2021-11-13 17:52:45,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:52:45,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 17:52:45,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 17:52:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:52:45,374 INFO L87 Difference]: Start difference. First operand 1254 states and 1465 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) [2021-11-13 17:52:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:52,690 INFO L93 Difference]: Finished difference Result 1310 states and 1549 transitions. [2021-11-13 17:52:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 17:52:52,691 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 [2021-11-13 17:52:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:52,695 INFO L225 Difference]: With dead ends: 1310 [2021-11-13 17:52:52,695 INFO L226 Difference]: Without dead ends: 1304 [2021-11-13 17:52:52,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:52:52,698 INFO L933 BasicCegarLoop]: 1035 mSDtfsCounter, 207 mSDsluCounter, 16483 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1913.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 17518 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.52ms SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2144.98ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:52,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 17518 Invalid, 1426 Unknown, 0 Unchecked, 16.52ms Time], IncrementalHoareTripleChecker [173 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2144.98ms Time] [2021-11-13 17:52:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-11-13 17:52:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1278. [2021-11-13 17:52:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 838 states have (on average 1.7732696897374702) internal successors, (1486), 1269 states have internal predecessors, (1486), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:52:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1496 transitions. [2021-11-13 17:52:52,740 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1496 transitions. Word has length 91 [2021-11-13 17:52:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:52,741 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1496 transitions. [2021-11-13 17:52:52,741 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) [2021-11-13 17:52:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1496 transitions. [2021-11-13 17:52:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 17:52:52,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:52,742 INFO L514 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] [2021-11-13 17:52:52,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:52,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:52,958 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:52:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash -982464913, now seen corresponding path program 4 times [2021-11-13 17:52:52,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:52,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093446952] [2021-11-13 17:52:52,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:52:52,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:52,960 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:52,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 17:52:53,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:52:53,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:52:53,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 17:52:53,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:54,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:57,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:57,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093446952] [2021-11-13 17:52:57,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093446952] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:52:57,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:52:57,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 17:52:57,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119895270] [2021-11-13 17:52:57,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:52:57,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 17:52:57,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 17:52:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 17:52:57,697 INFO L87 Difference]: Start difference. First operand 1278 states and 1496 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) [2021-11-13 17:53:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:09,941 INFO L93 Difference]: Finished difference Result 1370 states and 1616 transitions. [2021-11-13 17:53:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 17:53:09,942 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 [2021-11-13 17:53:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:09,945 INFO L225 Difference]: With dead ends: 1370 [2021-11-13 17:53:09,945 INFO L226 Difference]: Without dead ends: 1366 [2021-11-13 17:53:09,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 17:53:09,952 INFO L933 BasicCegarLoop]: 1051 mSDtfsCounter, 270 mSDsluCounter, 32461 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5581.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 33512 SdHoareTripleChecker+Invalid, 4462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.51ms SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6330.83ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:09,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 33512 Invalid, 4462 Unknown, 0 Unchecked, 48.51ms Time], IncrementalHoareTripleChecker [481 Valid, 3981 Invalid, 0 Unknown, 0 Unchecked, 6330.83ms Time] [2021-11-13 17:53:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2021-11-13 17:53:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1308. [2021-11-13 17:53:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 868 states have (on average 1.7649769585253456) internal successors, (1532), 1299 states have internal predecessors, (1532), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:53:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1542 transitions. [2021-11-13 17:53:10,011 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1542 transitions. Word has length 107 [2021-11-13 17:53:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:10,012 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 1542 transitions. [2021-11-13 17:53:10,012 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) [2021-11-13 17:53:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1542 transitions. [2021-11-13 17:53:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 17:53:10,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:10,013 INFO L514 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] [2021-11-13 17:53:10,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 17:53:10,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:53:10,231 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 632 more)] === [2021-11-13 17:53:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:10,231 INFO L85 PathProgramCache]: Analyzing trace with hash -687593553, now seen corresponding path program 5 times [2021-11-13 17:53:10,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:53:10,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473187927] [2021-11-13 17:53:10,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:53:10,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:53:10,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:53:10,233 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:53:10,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8519b4-38f0-4e66-b1ac-91fb7da9db4c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 17:53:11,436 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:53:11,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:53:11,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 17:53:11,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:53:11,487 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 [2021-11-13 17:53:11,688 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:53:11,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-13 17:53:11,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-13 17:53:11,887 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 37 treesize of output 25 [2021-11-13 18:04:58,773 WARN L227 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)