./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:03:20,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:03:20,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:03:20,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:03:20,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:03:20,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:03:20,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:03:20,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:03:20,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:03:20,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:03:20,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:03:20,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:03:20,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:03:20,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:03:20,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:03:20,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:03:20,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:03:20,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:03:20,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:03:20,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:03:20,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:03:20,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:03:20,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:03:20,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:03:20,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:03:20,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:03:20,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:03:20,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:03:20,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:03:20,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:03:20,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:03:20,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:03:20,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:03:20,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:03:20,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:03:20,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:03:20,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:03:20,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:03:20,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:03:20,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:03:20,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:03:20,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:03:20,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:03:20,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:03:20,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:03:20,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:03:20,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:03:20,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:03:20,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:03:20,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:03:20,397 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:03:20,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:03:20,397 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:03:20,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:03:20,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:03:20,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:03:20,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:03:20,399 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:03:20,399 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:03:20,399 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:03:20,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:03:20,400 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:03:20,400 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:03:20,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:03:20,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:03:20,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:03:20,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:03:20,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:03:20,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:03:20,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:03:20,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:03:20,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:03:20,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:03:20,403 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-13 18:03:20,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:03:20,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:03:20,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:03:20,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:03:20,766 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:03:20,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-13 18:03:20,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/a5beb7323/06220ff316b448e6a42108f4e1b2522b/FLAG288df60c9 [2021-11-13 18:03:21,679 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:03:21,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-13 18:03:21,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/a5beb7323/06220ff316b448e6a42108f4e1b2522b/FLAG288df60c9 [2021-11-13 18:03:21,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/a5beb7323/06220ff316b448e6a42108f4e1b2522b [2021-11-13 18:03:21,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:03:21,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:03:21,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:21,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:03:21,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:03:21,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:21" (1/1) ... [2021-11-13 18:03:21,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fe0c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:21, skipping insertion in model container [2021-11-13 18:03:21,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:21" (1/1) ... [2021-11-13 18:03:21,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:03:22,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:03:22,732 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-13 18:03:22,956 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-13 18:03:22,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:23,014 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 18:03:23,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c589709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:23, skipping insertion in model container [2021-11-13 18:03:23,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:23,018 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:03:23,021 INFO L158 Benchmark]: Toolchain (without parser) took 1125.74ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 33.6MB in the beginning and 74.3MB in the end (delta: -40.7MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-11-13 18:03:23,023 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 52.2MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:03:23,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1117.30ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 33.4MB in the beginning and 74.6MB in the end (delta: -41.2MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-11-13 18:03:23,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 52.2MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1117.30ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 33.4MB in the beginning and 74.6MB in the end (delta: -41.2MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:03:25,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:03:25,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:03:25,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:03:25,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:03:25,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:03:25,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:03:25,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:03:25,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:03:25,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:03:25,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:03:25,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:03:25,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:03:25,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:03:25,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:03:25,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:03:25,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:03:25,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:03:25,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:03:25,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:03:25,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:03:25,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:03:25,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:03:25,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:03:25,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:03:25,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:03:25,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:03:25,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:03:25,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:03:25,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:03:25,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:03:25,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:03:25,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:03:25,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:03:25,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:03:25,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:03:25,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:03:25,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:03:25,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:03:25,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:03:25,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:03:25,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:03:26,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:03:26,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:03:26,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:03:26,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:03:26,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:03:26,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:03:26,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:03:26,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:03:26,035 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:03:26,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:03:26,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:03:26,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:03:26,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:03:26,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:03:26,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:03:26,036 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:03:26,037 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:03:26,037 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:03:26,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:03:26,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:03:26,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:03:26,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:03:26,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:03:26,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:03:26,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:03:26,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:03:26,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:03:26,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:03:26,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:03:26,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:03:26,040 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:03:26,040 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:03:26,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:03:26,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:03:26,041 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2021-11-13 18:03:26,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:03:26,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:03:26,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:03:26,510 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:03:26,512 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:03:26,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-13 18:03:26,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/3b38b9299/99de3b3fd1af4444be30ca609313cd99/FLAGee701c662 [2021-11-13 18:03:27,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:03:27,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2021-11-13 18:03:27,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/3b38b9299/99de3b3fd1af4444be30ca609313cd99/FLAGee701c662 [2021-11-13 18:03:27,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/data/3b38b9299/99de3b3fd1af4444be30ca609313cd99 [2021-11-13 18:03:27,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:03:27,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:03:27,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:27,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:03:27,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:03:27,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:27" (1/1) ... [2021-11-13 18:03:27,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfd0229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:27, skipping insertion in model container [2021-11-13 18:03:27,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:27" (1/1) ... [2021-11-13 18:03:27,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:03:27,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:03:28,522 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-13 18:03:28,641 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-13 18:03:28,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:28,699 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:03:28,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:03:28,785 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-13 18:03:28,920 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-13 18:03:28,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:28,960 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:03:29,008 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[37019,37032] [2021-11-13 18:03:29,090 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_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i[47352,47365] [2021-11-13 18:03:29,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:29,188 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:03:29,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29 WrapperNode [2021-11-13 18:03:29,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:29,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:03:29,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:03:29,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:03:29,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:03:29,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:03:29,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:03:29,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:03:29,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (1/1) ... [2021-11-13 18:03:29,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:03:29,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:03:29,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:03:29,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:03:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:03:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:03:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:03:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:03:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:03:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:03:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:03:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:03:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:03:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:03:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 18:03:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:03:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:03:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:03:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:03:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:03:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:03:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:03:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:03:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:03:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:03:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:03:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:03:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:03:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:03:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:03:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:03:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:03:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:03:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:03:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:03:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:03:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:03:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:03:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:03:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:03:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:03:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:03:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:03:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:03:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:03:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:03:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:03:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:03:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:03:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:03:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:03:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:03:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:03:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:03:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:03:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:03:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:03:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:03:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:03:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:03:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:03:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:03:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:03:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:03:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:03:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:03:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:03:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:03:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:03:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:03:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:03:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:03:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:03:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:03:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:03:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:03:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:03:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:03:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:03:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:03:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:03:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:03:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:03:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:03:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:03:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:03:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:03:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:03:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:03:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:03:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:03:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:03:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:03:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:03:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:03:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:03:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:03:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:03:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:03:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:03:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:03:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:03:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:03:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:03:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:03:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:03:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:03:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:03:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:03:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:03:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:03:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:03:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:03:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:03:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:03:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:03:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:03:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:03:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:03:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:03:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:03:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:03:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:03:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:03:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:03:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:03:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:03:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:03:29,648 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:03:29,654 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:03:29,654 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:03:29,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:03:29,654 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:03:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:03:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:03:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:03:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:03:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:03:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:03:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:03:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:03:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:03:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:03:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:03:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:03:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:03:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:03:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:03:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:03:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:03:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:03:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:03:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:03:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:03:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:03:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:03:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:03:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:03:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:03:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:03:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:03:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:03:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:03:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:03:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:03:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:03:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:03:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:03:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:03:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:03:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:03:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:03:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:03:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:03:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:03:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure clock [2021-11-13 18:03:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure time [2021-11-13 18:03:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure difftime [2021-11-13 18:03:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2021-11-13 18:03:29,664 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2021-11-13 18:03:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure strftime_l [2021-11-13 18:03:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime [2021-11-13 18:03:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2021-11-13 18:03:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime_r [2021-11-13 18:03:29,665 INFO L130 BoogieDeclarations]: Found specification of procedure localtime_r [2021-11-13 18:03:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure asctime [2021-11-13 18:03:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2021-11-13 18:03:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure asctime_r [2021-11-13 18:03:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure ctime_r [2021-11-13 18:03:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure tzset [2021-11-13 18:03:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure stime [2021-11-13 18:03:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure timegm [2021-11-13 18:03:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure timelocal [2021-11-13 18:03:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure dysize [2021-11-13 18:03:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure nanosleep [2021-11-13 18:03:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getres [2021-11-13 18:03:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure clock_gettime [2021-11-13 18:03:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure clock_settime [2021-11-13 18:03:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure clock_nanosleep [2021-11-13 18:03:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getcpuclockid [2021-11-13 18:03:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure timer_create [2021-11-13 18:03:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure timer_delete [2021-11-13 18:03:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure timer_settime [2021-11-13 18:03:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure timer_gettime [2021-11-13 18:03:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure timer_getoverrun [2021-11-13 18:03:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_get [2021-11-13 18:03:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:03:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:03:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:03:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:03:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:03:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:03:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 18:03:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:03:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:03:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:03:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:03:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:03:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:03:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:03:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:03:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:03:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:03:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:03:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:03:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:03:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:03:30,269 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:03:36,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:03:36,620 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-13 18:03:36,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:03:36 BoogieIcfgContainer [2021-11-13 18:03:36,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:03:36,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:03:36,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:03:36,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:03:36,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:03:27" (1/3) ... [2021-11-13 18:03:36,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca295dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:03:36, skipping insertion in model container [2021-11-13 18:03:36,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:29" (2/3) ... [2021-11-13 18:03:36,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca295dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:03:36, skipping insertion in model container [2021-11-13 18:03:36,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:03:36" (3/3) ... [2021-11-13 18:03:36,639 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2021-11-13 18:03:36,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:03:36,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-13 18:03:36,714 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:03:36,727 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 18:03:36,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-13 18:03:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 1089 states, 539 states have (on average 2.2319109461966606) internal successors, (1203), 1077 states have internal predecessors, (1203), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:03:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:03:36,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:36,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:36,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:03:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:36,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1408970550, now seen corresponding path program 1 times [2021-11-13 18:03:36,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:03:36,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326049071] [2021-11-13 18:03:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:36,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:03:36,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:03:36,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:03:36,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:03:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:37,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:03:37,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:37,386 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 18:03:37,410 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 18:03:37,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:37,466 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 18:03:37,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:03:37,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326049071] [2021-11-13 18:03:37,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326049071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:37,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:37,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:03:37,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193344319] [2021-11-13 18:03:37,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:37,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:37,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:03:37,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:37,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:37,525 INFO L87 Difference]: Start difference. First operand has 1089 states, 539 states have (on average 2.2319109461966606) internal successors, (1203), 1077 states have internal predecessors, (1203), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:03:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:40,297 INFO L93 Difference]: Finished difference Result 1253 states and 1329 transitions. [2021-11-13 18:03:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:40,300 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 18:03:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:40,330 INFO L225 Difference]: With dead ends: 1253 [2021-11-13 18:03:40,330 INFO L226 Difference]: Without dead ends: 1250 [2021-11-13 18:03:40,332 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 18:03:40,337 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 983 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2167.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.76ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2617.16ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:40,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 841 Invalid, 652 Unknown, 0 Unchecked, 24.76ms Time], IncrementalHoareTripleChecker [16 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2617.16ms Time] [2021-11-13 18:03:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-11-13 18:03:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1072. [2021-11-13 18:03:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 539 states have (on average 2.0760667903525047) internal successors, (1119), 1061 states have internal predecessors, (1119), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 18:03:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1140 transitions. [2021-11-13 18:03:40,484 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1140 transitions. Word has length 7 [2021-11-13 18:03:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:40,485 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1140 transitions. [2021-11-13 18:03:40,485 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 18:03:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1140 transitions. [2021-11-13 18:03:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:03:40,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:40,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:40,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:03:40,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:03:40,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:03:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1408970549, now seen corresponding path program 1 times [2021-11-13 18:03:40,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:03:40,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322330091] [2021-11-13 18:03:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:40,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:03:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:03:40,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:03:40,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:03:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:40,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:03:40,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:41,019 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 18:03:41,038 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 18:03:41,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:41,125 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 18:03:41,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:03:41,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322330091] [2021-11-13 18:03:41,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322330091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:41,126 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:41,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:03:41,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647875692] [2021-11-13 18:03:41,127 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:41,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:03:41,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:03:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:03:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:03:41,129 INFO L87 Difference]: Start difference. First operand 1072 states and 1140 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:03:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:47,168 INFO L93 Difference]: Finished difference Result 1554 states and 1658 transitions. [2021-11-13 18:03:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:03:47,169 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 18:03:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:47,180 INFO L225 Difference]: With dead ends: 1554 [2021-11-13 18:03:47,180 INFO L226 Difference]: Without dead ends: 1554 [2021-11-13 18:03:47,180 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 18:03:47,182 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 1601 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5199.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.76ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5924.07ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:47,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 1455 Invalid, 897 Unknown, 0 Unchecked, 33.76ms Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 5924.07ms Time] [2021-11-13 18:03:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-13 18:03:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1107. [2021-11-13 18:03:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 583 states have (on average 2.0548885077186965) internal successors, (1198), 1096 states have internal predecessors, (1198), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 18:03:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1219 transitions. [2021-11-13 18:03:47,246 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1219 transitions. Word has length 7 [2021-11-13 18:03:47,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:47,246 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1219 transitions. [2021-11-13 18:03:47,247 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 18:03:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1219 transitions. [2021-11-13 18:03:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:03:47,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:47,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:47,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 18:03:47,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:03:47,464 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:03:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2093131419, now seen corresponding path program 1 times [2021-11-13 18:03:47,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:03:47,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538161253] [2021-11-13 18:03:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:47,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:03:47,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:03:47,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:03:47,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:03:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:47,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:03:47,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:47,761 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 18:03:47,786 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 18:03:47,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:47,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:03:47,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538161253] [2021-11-13 18:03:47,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538161253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:47,833 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:47,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:03:47,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339704232] [2021-11-13 18:03:47,834 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:47,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:47,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:03:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:47,836 INFO L87 Difference]: Start difference. First operand 1107 states and 1219 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:03:50,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:50,435 INFO L93 Difference]: Finished difference Result 1273 states and 1403 transitions. [2021-11-13 18:03:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:50,438 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 18:03:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:50,448 INFO L225 Difference]: With dead ends: 1273 [2021-11-13 18:03:50,448 INFO L226 Difference]: Without dead ends: 1273 [2021-11-13 18:03:50,448 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 18:03:50,452 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 804 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2130.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.51ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2531.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:50,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 1180 Invalid, 681 Unknown, 0 Unchecked, 11.51ms Time], IncrementalHoareTripleChecker [51 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 2531.93ms Time] [2021-11-13 18:03:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-13 18:03:50,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1060. [2021-11-13 18:03:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 583 states have (on average 1.9691252144082332) internal successors, (1148), 1049 states have internal predecessors, (1148), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 18:03:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1169 transitions. [2021-11-13 18:03:50,499 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1169 transitions. Word has length 12 [2021-11-13 18:03:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:50,500 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1169 transitions. [2021-11-13 18:03:50,500 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 18:03:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1169 transitions. [2021-11-13 18:03:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:03:50,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:50,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:50,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:03:50,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:03:50,715 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:03:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2093131418, now seen corresponding path program 1 times [2021-11-13 18:03:50,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:03:50,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144299568] [2021-11-13 18:03:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:50,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:03:50,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:03:50,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:03:50,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:03:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:50,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:03:50,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:50,993 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 18:03:51,038 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 18:03:51,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:51,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:03:51,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144299568] [2021-11-13 18:03:51,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144299568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:51,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:51,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:03:51,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580799119] [2021-11-13 18:03:51,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:51,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:03:51,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:03:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:03:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:03:51,160 INFO L87 Difference]: Start difference. First operand 1060 states and 1169 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:03:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:55,499 INFO L93 Difference]: Finished difference Result 1303 states and 1397 transitions. [2021-11-13 18:03:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:03:55,502 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 18:03:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:55,511 INFO L225 Difference]: With dead ends: 1303 [2021-11-13 18:03:55,512 INFO L226 Difference]: Without dead ends: 1303 [2021-11-13 18:03:55,512 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 18:03:55,514 INFO L933 BasicCegarLoop]: 1055 mSDtfsCounter, 1018 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3752.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.40ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4286.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:55,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 1504 Invalid, 702 Unknown, 0 Unchecked, 14.40ms Time], IncrementalHoareTripleChecker [15 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 4286.90ms Time] [2021-11-13 18:03:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-11-13 18:03:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1050. [2021-11-13 18:03:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 583 states have (on average 1.946826758147513) internal successors, (1135), 1039 states have internal predecessors, (1135), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 18:03:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1156 transitions. [2021-11-13 18:03:55,554 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1156 transitions. Word has length 12 [2021-11-13 18:03:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:55,555 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1156 transitions. [2021-11-13 18:03:55,555 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 18:03:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1156 transitions. [2021-11-13 18:03:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:03:55,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:55,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:55,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:03:55,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:03:55,771 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:03:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1355083610, now seen corresponding path program 1 times [2021-11-13 18:03:55,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:03:55,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661027934] [2021-11-13 18:03:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:55,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:03:55,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:03:55,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:03:55,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:03:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:55,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:03:55,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:56,149 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 18:03:56,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:56,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:03:56,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661027934] [2021-11-13 18:03:56,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661027934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:56,276 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:56,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:03:56,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944216647] [2021-11-13 18:03:56,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:56,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:56,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:03:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:56,278 INFO L87 Difference]: Start difference. First operand 1050 states and 1156 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:03:56,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:56,628 INFO L93 Difference]: Finished difference Result 1512 states and 1653 transitions. [2021-11-13 18:03:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:56,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 18:03:56,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:56,639 INFO L225 Difference]: With dead ends: 1512 [2021-11-13 18:03:56,639 INFO L226 Difference]: Without dead ends: 1512 [2021-11-13 18:03:56,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:56,640 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 558 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.25ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 322.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:56,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 2052 Invalid, 119 Unknown, 0 Unchecked, 5.25ms Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 322.55ms Time] [2021-11-13 18:03:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-13 18:03:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1219. [2021-11-13 18:03:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 751 states have (on average 1.8974700399467377) internal successors, (1425), 1207 states have internal predecessors, (1425), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:03:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1448 transitions. [2021-11-13 18:03:56,686 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1448 transitions. Word has length 15 [2021-11-13 18:03:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:56,686 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1448 transitions. [2021-11-13 18:03:56,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:03:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1448 transitions. [2021-11-13 18:03:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:03:56,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:56,688 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 18:03:56,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:03:56,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:03:56,902 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:03:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:56,903 INFO L85 PathProgramCache]: Analyzing trace with hash 522513117, now seen corresponding path program 1 times [2021-11-13 18:03:56,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:03:56,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044982719] [2021-11-13 18:03:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:56,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:03:56,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:03:56,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:03:56,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:03:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:57,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:03:57,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:57,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:57,251 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 18:03:57,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:03:57,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044982719] [2021-11-13 18:03:57,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044982719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:57,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:57,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:03:57,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862638559] [2021-11-13 18:03:57,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:57,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:03:57,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:03:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:03:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:03:57,254 INFO L87 Difference]: Start difference. First operand 1219 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:03:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:57,302 INFO L93 Difference]: Finished difference Result 1373 states and 1588 transitions. [2021-11-13 18:03:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:57,303 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 18:03:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:57,312 INFO L225 Difference]: With dead ends: 1373 [2021-11-13 18:03:57,312 INFO L226 Difference]: Without dead ends: 1373 [2021-11-13 18:03:57,313 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 18:03:57,314 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 784 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:57,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 2079 Invalid, 13 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 24.50ms Time] [2021-11-13 18:03:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2021-11-13 18:03:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1159. [2021-11-13 18:03:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 715 states have (on average 1.8727272727272728) internal successors, (1339), 1147 states have internal predecessors, (1339), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:03:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1362 transitions. [2021-11-13 18:03:57,356 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1362 transitions. Word has length 17 [2021-11-13 18:03:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:57,357 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1362 transitions. [2021-11-13 18:03:57,357 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 18:03:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1362 transitions. [2021-11-13 18:03:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:03:57,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:57,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:57,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:03:57,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:03:57,580 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:03:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:57,580 INFO L85 PathProgramCache]: Analyzing trace with hash 905393921, now seen corresponding path program 1 times [2021-11-13 18:03:57,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:03:57,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515051714] [2021-11-13 18:03:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:57,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:03:57,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:03:57,583 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:03:57,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:03:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:57,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:03:57,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:03:57,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:03:57,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:03:57,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:03:58,020 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:03:58,021 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 18:03:58,102 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:03:58,102 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 18:03:58,144 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 18:03:58,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:03:58,243 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 18:03:58,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:03:58,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515051714] [2021-11-13 18:03:58,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515051714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:58,244 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:58,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:03:58,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287017600] [2021-11-13 18:03:58,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:58,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:03:58,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:03:58,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:03:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:03:58,247 INFO L87 Difference]: Start difference. First operand 1159 states and 1362 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:01,222 INFO L93 Difference]: Finished difference Result 1474 states and 1710 transitions. [2021-11-13 18:04:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:04:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-13 18:04:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:01,232 INFO L225 Difference]: With dead ends: 1474 [2021-11-13 18:04:01,232 INFO L226 Difference]: Without dead ends: 1474 [2021-11-13 18:04:01,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:04:01,234 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 330 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2550.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2879.45ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:01,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 3737 Invalid, 363 Unknown, 0 Unchecked, 11.51ms Time], IncrementalHoareTripleChecker [2 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 2879.45ms Time] [2021-11-13 18:04:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-13 18:04:01,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1158. [2021-11-13 18:04:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 714 states have (on average 1.8725490196078431) internal successors, (1337), 1146 states have internal predecessors, (1337), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1360 transitions. [2021-11-13 18:04:01,291 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1360 transitions. Word has length 18 [2021-11-13 18:04:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:01,291 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1360 transitions. [2021-11-13 18:04:01,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1360 transitions. [2021-11-13 18:04:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 18:04:01,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:01,293 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 18:04:01,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:01,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:01,509 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash 957770193, now seen corresponding path program 1 times [2021-11-13 18:04:01,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:01,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849907718] [2021-11-13 18:04:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:01,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:01,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:01,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:01,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:04:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:01,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:04:01,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:01,837 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 18:04:01,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:01,917 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 18:04:01,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:01,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849907718] [2021-11-13 18:04:01,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849907718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:01,918 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:01,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:04:01,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865664126] [2021-11-13 18:04:01,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:01,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:04:01,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:01,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:04:01,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:04:01,922 INFO L87 Difference]: Start difference. First operand 1158 states and 1360 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:01,982 INFO L93 Difference]: Finished difference Result 1098 states and 1274 transitions. [2021-11-13 18:04:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:04:01,983 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 18:04:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:01,991 INFO L225 Difference]: With dead ends: 1098 [2021-11-13 18:04:01,992 INFO L226 Difference]: Without dead ends: 1098 [2021-11-13 18:04:01,992 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 18:04:01,993 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 1866 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:01,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1870 Valid, 1039 Invalid, 16 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 37.23ms Time] [2021-11-13 18:04:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-13 18:04:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2021-11-13 18:04:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 678 states have (on average 1.845132743362832) internal successors, (1251), 1086 states have internal predecessors, (1251), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1274 transitions. [2021-11-13 18:04:02,030 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1274 transitions. Word has length 22 [2021-11-13 18:04:02,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:02,031 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 1274 transitions. [2021-11-13 18:04:02,031 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 18:04:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1274 transitions. [2021-11-13 18:04:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:04:02,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:02,033 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 18:04:02,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:02,247 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1294153163, now seen corresponding path program 1 times [2021-11-13 18:04:02,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:02,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457554838] [2021-11-13 18:04:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:02,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:02,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:02,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:02,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:04:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:02,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:02,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:02,546 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 18:04:02,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:02,622 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 18:04:02,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:02,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457554838] [2021-11-13 18:04:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457554838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:02,624 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:02,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:04:02,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472187137] [2021-11-13 18:04:02,624 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:02,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:04:02,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:04:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:04:02,629 INFO L87 Difference]: Start difference. First operand 1098 states and 1274 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:02,740 INFO L93 Difference]: Finished difference Result 1070 states and 1218 transitions. [2021-11-13 18:04:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:04:02,741 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 18:04:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:02,749 INFO L225 Difference]: With dead ends: 1070 [2021-11-13 18:04:02,750 INFO L226 Difference]: Without dead ends: 1070 [2021-11-13 18:04:02,750 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 18:04:02,753 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 904 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.68ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.61ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:02,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1982 Invalid, 64 Unknown, 0 Unchecked, 6.68ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 70.61ms Time] [2021-11-13 18:04:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-13 18:04:02,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2021-11-13 18:04:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 662 states have (on average 1.8021148036253776) internal successors, (1193), 1056 states have internal predecessors, (1193), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1216 transitions. [2021-11-13 18:04:02,804 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1216 transitions. Word has length 24 [2021-11-13 18:04:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:02,805 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1216 transitions. [2021-11-13 18:04:02,805 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 18:04:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1216 transitions. [2021-11-13 18:04:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:04:02,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:02,810 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 18:04:02,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:03,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:03,025 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash 62146457, now seen corresponding path program 1 times [2021-11-13 18:04:03,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:03,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796292633] [2021-11-13 18:04:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:03,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:03,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:03,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:03,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:04:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:03,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:03,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:03,297 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 18:04:03,446 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 18:04:03,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:03,614 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 18:04:03,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:03,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796292633] [2021-11-13 18:04:03,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796292633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:03,614 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:03,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:04:03,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287468029] [2021-11-13 18:04:03,615 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:03,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:04:03,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:04:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:04:03,617 INFO L87 Difference]: Start difference. First operand 1068 states and 1216 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:06,160 INFO L93 Difference]: Finished difference Result 1499 states and 1713 transitions. [2021-11-13 18:04:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:04:06,162 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 18:04:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:06,172 INFO L225 Difference]: With dead ends: 1499 [2021-11-13 18:04:06,172 INFO L226 Difference]: Without dead ends: 1499 [2021-11-13 18:04:06,172 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 18:04:06,173 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 1443 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2094.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.80ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2488.77ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:06,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 1087 Invalid, 894 Unknown, 0 Unchecked, 10.80ms Time], IncrementalHoareTripleChecker [21 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 2488.77ms Time] [2021-11-13 18:04:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-11-13 18:04:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1064. [2021-11-13 18:04:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 662 states have (on average 1.7900302114803626) internal successors, (1185), 1052 states have internal predecessors, (1185), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1208 transitions. [2021-11-13 18:04:06,207 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1208 transitions. Word has length 38 [2021-11-13 18:04:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:06,208 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1208 transitions. [2021-11-13 18:04:06,208 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 18:04:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1208 transitions. [2021-11-13 18:04:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:04:06,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:06,210 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 18:04:06,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:06,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:06,424 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:06,425 INFO L85 PathProgramCache]: Analyzing trace with hash 62146458, now seen corresponding path program 1 times [2021-11-13 18:04:06,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:06,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699042970] [2021-11-13 18:04:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:06,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:06,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:06,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:04:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:06,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:04:06,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:06,704 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 18:04:07,034 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 18:04:07,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:07,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:07,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699042970] [2021-11-13 18:04:07,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699042970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:07,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:07,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:04:07,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696110276] [2021-11-13 18:04:07,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:07,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:04:07,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:04:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:04:07,636 INFO L87 Difference]: Start difference. First operand 1064 states and 1208 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:16,592 INFO L93 Difference]: Finished difference Result 1553 states and 1730 transitions. [2021-11-13 18:04:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:04:16,594 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 18:04:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:16,601 INFO L225 Difference]: With dead ends: 1553 [2021-11-13 18:04:16,601 INFO L226 Difference]: Without dead ends: 1553 [2021-11-13 18:04:16,601 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 18:04:16,611 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 990 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7742.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.13ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8786.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:16,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 3093 Invalid, 2110 Unknown, 0 Unchecked, 22.13ms Time], IncrementalHoareTripleChecker [12 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 8786.25ms Time] [2021-11-13 18:04:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-11-13 18:04:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1060. [2021-11-13 18:04:16,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 662 states have (on average 1.7779456193353473) internal successors, (1177), 1048 states have internal predecessors, (1177), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1200 transitions. [2021-11-13 18:04:16,643 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1200 transitions. Word has length 38 [2021-11-13 18:04:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:16,644 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1200 transitions. [2021-11-13 18:04:16,644 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 18:04:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1200 transitions. [2021-11-13 18:04:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:04:16,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:16,646 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 18:04:16,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:16,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:16,860 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2044490264, now seen corresponding path program 1 times [2021-11-13 18:04:16,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:16,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385452324] [2021-11-13 18:04:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:16,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:16,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:16,865 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:16,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:04:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:17,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:17,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:17,408 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 18:04:17,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:17,598 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 18:04:17,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:17,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385452324] [2021-11-13 18:04:17,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385452324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:17,598 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:17,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:04:17,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67103305] [2021-11-13 18:04:17,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:17,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:04:17,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:04:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:04:17,603 INFO L87 Difference]: Start difference. First operand 1060 states and 1200 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:17,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:17,675 INFO L93 Difference]: Finished difference Result 1048 states and 1180 transitions. [2021-11-13 18:04:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:04:17,676 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 18:04:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:17,683 INFO L225 Difference]: With dead ends: 1048 [2021-11-13 18:04:17,684 INFO L226 Difference]: Without dead ends: 1048 [2021-11-13 18:04:17,684 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 18:04:17,685 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 880 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.77ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:17,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1904 Invalid, 41 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 44.77ms Time] [2021-11-13 18:04:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-13 18:04:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2021-11-13 18:04:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 650 states have (on average 1.78) internal successors, (1157), 1036 states have internal predecessors, (1157), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1180 transitions. [2021-11-13 18:04:17,715 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1180 transitions. Word has length 56 [2021-11-13 18:04:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:17,716 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1180 transitions. [2021-11-13 18:04:17,716 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 18:04:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1180 transitions. [2021-11-13 18:04:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:04:17,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:17,718 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 18:04:17,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:17,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:17,936 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -594226460, now seen corresponding path program 1 times [2021-11-13 18:04:17,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:17,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251121449] [2021-11-13 18:04:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:17,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:17,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:17,939 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:17,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:04:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:18,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:04:18,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:18,428 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 18:04:18,440 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 18:04:19,358 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:04:19,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-13 18:04:19,367 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:04:19,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-13 18:04:19,409 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 18:04:19,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:25,104 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 18:04:25,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:25,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251121449] [2021-11-13 18:04:25,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251121449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:25,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:25,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:04:25,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437921773] [2021-11-13 18:04:25,105 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:25,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:04:25,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:04:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:04:25,106 INFO L87 Difference]: Start difference. First operand 1048 states and 1180 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:04:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:29,442 INFO L93 Difference]: Finished difference Result 1479 states and 1646 transitions. [2021-11-13 18:04:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:04:29,445 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 18:04:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:29,452 INFO L225 Difference]: With dead ends: 1479 [2021-11-13 18:04:29,453 INFO L226 Difference]: Without dead ends: 1479 [2021-11-13 18:04:29,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 18:04:29,454 INFO L933 BasicCegarLoop]: 1035 mSDtfsCounter, 502 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3566.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.52ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 717 IncrementalHoareTripleChecker+Unchecked, 4230.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:29,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 2622 Invalid, 1650 Unknown, 0 Unchecked, 15.52ms Time], IncrementalHoareTripleChecker [20 Valid, 913 Invalid, 0 Unknown, 717 Unchecked, 4230.70ms Time] [2021-11-13 18:04:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-13 18:04:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1130. [2021-11-13 18:04:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 733 states have (on average 1.8035470668485676) internal successors, (1322), 1117 states have internal predecessors, (1322), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-13 18:04:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1347 transitions. [2021-11-13 18:04:29,485 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1347 transitions. Word has length 64 [2021-11-13 18:04:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:29,486 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1347 transitions. [2021-11-13 18:04:29,486 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 18:04:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1347 transitions. [2021-11-13 18:04:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:04:29,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:29,488 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 18:04:29,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:29,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:29,716 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 179032613, now seen corresponding path program 1 times [2021-11-13 18:04:29,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:29,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799939645] [2021-11-13 18:04:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:29,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:29,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:29,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:04:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:30,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:30,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:30,361 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 18:04:30,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:30,431 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 18:04:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:30,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:30,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799939645] [2021-11-13 18:04:30,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799939645] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:30,816 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:30,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:04:30,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411333497] [2021-11-13 18:04:30,817 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:30,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:04:30,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:04:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:04:30,818 INFO L87 Difference]: Start difference. First operand 1130 states and 1347 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 18:04:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:33,381 INFO L93 Difference]: Finished difference Result 1097 states and 1314 transitions. [2021-11-13 18:04:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:04:33,382 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 18:04:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:33,389 INFO L225 Difference]: With dead ends: 1097 [2021-11-13 18:04:33,389 INFO L226 Difference]: Without dead ends: 1097 [2021-11-13 18:04:33,390 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 18:04:33,391 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 661 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2147.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2530.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:33,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 999 Invalid, 493 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [45 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 2530.53ms Time] [2021-11-13 18:04:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-11-13 18:04:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1024. [2021-11-13 18:04:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 660 states have (on average 1.7287878787878788) internal successors, (1141), 1012 states have internal predecessors, (1141), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1164 transitions. [2021-11-13 18:04:33,416 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1164 transitions. Word has length 66 [2021-11-13 18:04:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:33,417 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1164 transitions. [2021-11-13 18:04:33,417 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 18:04:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1164 transitions. [2021-11-13 18:04:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:04:33,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:33,419 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 18:04:33,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:33,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:33,635 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash -788480025, now seen corresponding path program 1 times [2021-11-13 18:04:33,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:33,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751666469] [2021-11-13 18:04:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:33,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:33,639 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:33,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:04:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:34,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:04:34,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:34,181 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 18:04:34,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 18:04:34,254 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 18:04:34,273 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 18:04:34,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:34,427 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 18:04:34,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:34,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751666469] [2021-11-13 18:04:34,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751666469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:34,428 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:34,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:04:34,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138738351] [2021-11-13 18:04:34,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:34,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:04:34,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:34,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:04:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:04:34,429 INFO L87 Difference]: Start difference. First operand 1024 states and 1164 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 18:04:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:37,886 INFO L93 Difference]: Finished difference Result 1023 states and 1163 transitions. [2021-11-13 18:04:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:04:37,887 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 18:04:37,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:37,892 INFO L225 Difference]: With dead ends: 1023 [2021-11-13 18:04:37,893 INFO L226 Difference]: Without dead ends: 1023 [2021-11-13 18:04:37,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 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 18:04:37,894 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 4 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2860.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.50ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3383.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:37,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2342 Invalid, 1248 Unknown, 0 Unchecked, 9.50ms Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 3383.74ms Time] [2021-11-13 18:04:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2021-11-13 18:04:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2021-11-13 18:04:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 660 states have (on average 1.7272727272727273) internal successors, (1140), 1011 states have internal predecessors, (1140), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1163 transitions. [2021-11-13 18:04:37,917 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1163 transitions. Word has length 69 [2021-11-13 18:04:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:37,918 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1163 transitions. [2021-11-13 18:04:37,918 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 18:04:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1163 transitions. [2021-11-13 18:04:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:04:37,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:37,920 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 18:04:37,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:38,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:38,136 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash -788480024, now seen corresponding path program 1 times [2021-11-13 18:04:38,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:38,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068781639] [2021-11-13 18:04:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:38,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:38,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:38,140 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:38,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:04:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:38,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:04:38,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:38,688 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 18:04:38,729 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 18:04:38,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:04:38,840 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 18:04:38,849 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 18:04:38,884 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 18:04:38,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:39,309 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 18:04:39,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:39,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068781639] [2021-11-13 18:04:39,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068781639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:39,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:39,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:04:39,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520408857] [2021-11-13 18:04:39,310 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:39,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:04:39,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:39,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:04:39,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:04:39,311 INFO L87 Difference]: Start difference. First operand 1023 states and 1163 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 18:04:48,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:48,455 INFO L93 Difference]: Finished difference Result 1022 states and 1162 transitions. [2021-11-13 18:04:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:04:48,456 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 18:04:48,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:48,461 INFO L225 Difference]: With dead ends: 1022 [2021-11-13 18:04:48,461 INFO L226 Difference]: Without dead ends: 1022 [2021-11-13 18:04:48,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:04:48,462 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 4 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8058.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.68ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9026.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:48,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2859 Invalid, 1626 Unknown, 0 Unchecked, 12.68ms Time], IncrementalHoareTripleChecker [1 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 9026.05ms Time] [2021-11-13 18:04:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-11-13 18:04:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1022. [2021-11-13 18:04:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 659 states have (on average 1.7283763277693476) internal successors, (1139), 1010 states have internal predecessors, (1139), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 18:04:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1162 transitions. [2021-11-13 18:04:48,486 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1162 transitions. Word has length 69 [2021-11-13 18:04:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:48,487 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1162 transitions. [2021-11-13 18:04:48,487 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 18:04:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1162 transitions. [2021-11-13 18:04:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 18:04:48,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:48,488 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 18:04:48,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-13 18:04:48,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:48,717 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2105370958, now seen corresponding path program 1 times [2021-11-13 18:04:48,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:48,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320845984] [2021-11-13 18:04:48,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:48,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:48,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:48,721 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:48,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:04:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:49,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:49,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:49,311 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 18:04:49,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:49,556 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 18:04:49,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:49,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320845984] [2021-11-13 18:04:49,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320845984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:49,557 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:49,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:04:49,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805818895] [2021-11-13 18:04:49,558 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:49,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:04:49,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:49,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:04:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:04:49,561 INFO L87 Difference]: Start difference. First operand 1022 states and 1162 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 18:04:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:49,672 INFO L93 Difference]: Finished difference Result 1032 states and 1175 transitions. [2021-11-13 18:04:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:04:49,673 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 18:04:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:49,680 INFO L225 Difference]: With dead ends: 1032 [2021-11-13 18:04:49,681 INFO L226 Difference]: Without dead ends: 1032 [2021-11-13 18:04:49,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:04:49,682 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 11 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.39ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:49,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1792 Invalid, 32 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 75.39ms Time] [2021-11-13 18:04:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-11-13 18:04:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1032. [2021-11-13 18:04:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 667 states have (on average 1.7256371814092955) internal successors, (1151), 1019 states have internal predecessors, (1151), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:04:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1175 transitions. [2021-11-13 18:04:49,707 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1175 transitions. Word has length 77 [2021-11-13 18:04:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:49,708 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 1175 transitions. [2021-11-13 18:04:49,708 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 18:04:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1175 transitions. [2021-11-13 18:04:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 18:04:49,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:49,710 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 18:04:49,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:49,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:49,923 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:49,924 INFO L85 PathProgramCache]: Analyzing trace with hash -221256690, now seen corresponding path program 1 times [2021-11-13 18:04:49,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:49,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620919264] [2021-11-13 18:04:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:49,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:49,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:49,926 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:49,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:04:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:50,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:04:50,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:50,559 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 18:04:50,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:50,853 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 18:04:50,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:50,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620919264] [2021-11-13 18:04:50,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620919264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:50,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:50,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:04:50,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059537214] [2021-11-13 18:04:50,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:50,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:04:50,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:50,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:04:50,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:04:50,859 INFO L87 Difference]: Start difference. First operand 1032 states and 1175 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 18:04:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:51,293 INFO L93 Difference]: Finished difference Result 1046 states and 1193 transitions. [2021-11-13 18:04:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:04:51,294 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 18:04:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:51,300 INFO L225 Difference]: With dead ends: 1046 [2021-11-13 18:04:51,300 INFO L226 Difference]: Without dead ends: 1042 [2021-11-13 18:04:51,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:04:51,302 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 26 mSDsluCounter, 4466 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5364 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:51,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 5364 Invalid, 113 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 216.30ms Time] [2021-11-13 18:04:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-11-13 18:04:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1038. [2021-11-13 18:04:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 673 states have (on average 1.7221396731054979) internal successors, (1159), 1025 states have internal predecessors, (1159), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:04:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1183 transitions. [2021-11-13 18:04:51,321 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1183 transitions. Word has length 79 [2021-11-13 18:04:51,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:51,322 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1183 transitions. [2021-11-13 18:04:51,322 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 18:04:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1183 transitions. [2021-11-13 18:04:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 18:04:51,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:51,323 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 18:04:51,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:51,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:51,524 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1685730930, now seen corresponding path program 2 times [2021-11-13 18:04:51,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:51,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079855841] [2021-11-13 18:04:51,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:04:51,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:51,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:51,526 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:51,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:04:52,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:04:52,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:04:52,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:04:52,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:52,356 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 18:04:52,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:52,983 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 18:04:52,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:52,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079855841] [2021-11-13 18:04:52,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079855841] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:52,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:52,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:04:52,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561034102] [2021-11-13 18:04:52,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:52,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:04:52,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:04:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:04:52,996 INFO L87 Difference]: Start difference. First operand 1038 states and 1183 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 18:04:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:54,710 INFO L93 Difference]: Finished difference Result 1066 states and 1221 transitions. [2021-11-13 18:04:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:04:54,711 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 18:04:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:54,718 INFO L225 Difference]: With dead ends: 1066 [2021-11-13 18:04:54,718 INFO L226 Difference]: Without dead ends: 1062 [2021-11-13 18:04:54,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:04:54,720 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 72 mSDsluCounter, 8071 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 611.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 8973 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.11ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 714.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:54,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 8973 Invalid, 380 Unknown, 0 Unchecked, 9.11ms Time], IncrementalHoareTripleChecker [63 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 714.93ms Time] [2021-11-13 18:04:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-11-13 18:04:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1050. [2021-11-13 18:04:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 685 states have (on average 1.7153284671532847) internal successors, (1175), 1037 states have internal predecessors, (1175), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:04:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1199 transitions. [2021-11-13 18:04:54,747 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1199 transitions. Word has length 83 [2021-11-13 18:04:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:54,747 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1199 transitions. [2021-11-13 18:04:54,748 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 18:04:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1199 transitions. [2021-11-13 18:04:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 18:04:54,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:54,749 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 18:04:54,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:54,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:04:54,965 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:04:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 17126542, now seen corresponding path program 3 times [2021-11-13 18:04:54,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:04:54,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040147001] [2021-11-13 18:04:54,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:04:54,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:04:54,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:04:54,967 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:04:54,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:04:55,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:04:55,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:04:55,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:04:55,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:56,529 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 18:04:56,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:58,609 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 18:04:58,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:04:58,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040147001] [2021-11-13 18:04:58,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040147001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:58,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:58,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:04:58,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836300481] [2021-11-13 18:04:58,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:58,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:04:58,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:04:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:04:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:04:58,614 INFO L87 Difference]: Start difference. First operand 1050 states and 1199 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 18:05:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:07,966 INFO L93 Difference]: Finished difference Result 1106 states and 1283 transitions. [2021-11-13 18:05:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:05:07,967 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 18:05:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:07,974 INFO L225 Difference]: With dead ends: 1106 [2021-11-13 18:05:07,975 INFO L226 Difference]: Without dead ends: 1100 [2021-11-13 18:05:07,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:05:07,978 INFO L933 BasicCegarLoop]: 909 mSDtfsCounter, 239 mSDsluCounter, 14466 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2406.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 15375 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.08ms SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2776.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:07,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 15375 Invalid, 1435 Unknown, 0 Unchecked, 20.08ms Time], IncrementalHoareTripleChecker [183 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 2776.12ms Time] [2021-11-13 18:05:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-11-13 18:05:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1074. [2021-11-13 18:05:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 709 states have (on average 1.7009873060648801) internal successors, (1206), 1061 states have internal predecessors, (1206), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:05:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1230 transitions. [2021-11-13 18:05:08,024 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1230 transitions. Word has length 91 [2021-11-13 18:05:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:08,024 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 1230 transitions. [2021-11-13 18:05:08,025 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 18:05:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1230 transitions. [2021-11-13 18:05:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 18:05:08,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:08,027 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 18:05:08,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:08,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:05:08,231 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:05:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1658022542, now seen corresponding path program 4 times [2021-11-13 18:05:08,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:05:08,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288185332] [2021-11-13 18:05:08,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:05:08,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:05:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:05:08,235 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:05:08,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:05:08,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:05:08,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:05:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:05:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:10,048 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 18:05:10,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:14,889 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 18:05:14,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:05:14,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288185332] [2021-11-13 18:05:14,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288185332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:14,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:05:14,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:05:14,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266874527] [2021-11-13 18:05:14,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:14,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:05:14,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:05:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:05:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:05:14,895 INFO L87 Difference]: Start difference. First operand 1074 states and 1230 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 18:05:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:30,744 INFO L93 Difference]: Finished difference Result 1166 states and 1350 transitions. [2021-11-13 18:05:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:05:30,745 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 18:05:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:30,750 INFO L225 Difference]: With dead ends: 1166 [2021-11-13 18:05:30,751 INFO L226 Difference]: Without dead ends: 1162 [2021-11-13 18:05:30,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:05:30,761 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 283 mSDsluCounter, 31229 mSDsCounter, 0 mSdLazyCounter, 4170 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7121.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 32154 SdHoareTripleChecker+Invalid, 4661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.07ms SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 4170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8153.16ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:30,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 32154 Invalid, 4661 Unknown, 0 Unchecked, 44.07ms Time], IncrementalHoareTripleChecker [491 Valid, 4170 Invalid, 0 Unknown, 0 Unchecked, 8153.16ms Time] [2021-11-13 18:05:30,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-11-13 18:05:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1104. [2021-11-13 18:05:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 739 states have (on average 1.6941813261163734) internal successors, (1252), 1091 states have internal predecessors, (1252), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-13 18:05:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1276 transitions. [2021-11-13 18:05:30,790 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1276 transitions. Word has length 107 [2021-11-13 18:05:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:30,791 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 1276 transitions. [2021-11-13 18:05:30,791 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 18:05:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1276 transitions. [2021-11-13 18:05:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 18:05:30,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:30,793 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 18:05:30,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:31,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:05:31,007 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-13 18:05:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash 706749902, now seen corresponding path program 5 times [2021-11-13 18:05:31,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:05:31,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284845622] [2021-11-13 18:05:31,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:05:31,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:05:31,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:05:31,009 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:05:31,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f653d271-a7b3-4c30-b47f-a5bf1f2df53c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 18:05:32,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:05:32,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:05:32,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:05:32,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:32,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:05:32,529 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:05:32,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-13 18:05:32,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-13 18:05:32,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24