./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt --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 d7aa8b24faa4bd1f5dc31e6b8da91b11ca919e76 ....................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt --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 d7aa8b24faa4bd1f5dc31e6b8da91b11ca919e76 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:47:29,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:47:29,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:47:29,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:47:29,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:47:29,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:47:29,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:47:29,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:47:29,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:47:29,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:47:29,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:47:29,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:47:29,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:47:29,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:47:29,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:47:29,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:47:29,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:47:29,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:47:29,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:47:29,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:47:29,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:47:29,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:47:29,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:47:29,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:47:29,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:47:29,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:47:29,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:47:29,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:47:29,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:47:29,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:47:29,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:47:29,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:47:29,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:47:29,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:47:29,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:47:29,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:47:29,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:47:29,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:47:29,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:47:29,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:47:29,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:47:29,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:47:29,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:47:29,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:47:29,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:47:29,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:47:29,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:47:29,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:47:29,182 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:47:29,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:47:29,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:47:29,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:47:29,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:47:29,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:47:29,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:47:29,185 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:47:29,185 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:47:29,185 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:47:29,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:47:29,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:47:29,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:47:29,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:47:29,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:47:29,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:47:29,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:47:29,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:47:29,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:47:29,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:47:29,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:47:29,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:47:29,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:47:29,199 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_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7aa8b24faa4bd1f5dc31e6b8da91b11ca919e76 [2021-10-13 00:47:29,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:47:29,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:47:29,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:47:29,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:47:29,486 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:47:29,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-10-13 00:47:29,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/b47bec1e6/764bfaecb13047e39f6715936cea0911/FLAG4a8c8263b [2021-10-13 00:47:30,101 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:47:30,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-10-13 00:47:30,119 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/b47bec1e6/764bfaecb13047e39f6715936cea0911/FLAG4a8c8263b [2021-10-13 00:47:30,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/b47bec1e6/764bfaecb13047e39f6715936cea0911 [2021-10-13 00:47:30,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:47:30,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:47:30,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:47:30,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:47:30,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:47:30,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:47:30" (1/1) ... [2021-10-13 00:47:30,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df5be44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:30, skipping insertion in model container [2021-10-13 00:47:30,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:47:30" (1/1) ... [2021-10-13 00:47:30,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:47:30,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:47:30,908 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_9737e706-74f7-430f-8196-e647606eeb63/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-10-13 00:47:30,935 WARN L549 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-10-13 00:47:30,936 WARN L549 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-10-13 00:47:30,937 WARN L549 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-10-13 00:47:30,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:47:30,997 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) [2021-10-13 00:47:30,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fa9a8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:30, skipping insertion in model container [2021-10-13 00:47:30,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:47:30,999 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 00:47:31,001 INFO L168 Benchmark]: Toolchain (without parser) took 626.90 ms. Allocated memory is still 109.1 MB. Free memory was 76.1 MB in the beginning and 78.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:47:31,003 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:47:31,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.52 ms. Allocated memory is still 109.1 MB. Free memory was 75.9 MB in the beginning and 78.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:47:31,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 624.52 ms. Allocated memory is still 109.1 MB. Free memory was 75.9 MB in the beginning and 78.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:47:33,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:47:33,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:47:33,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:47:33,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:47:33,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:47:33,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:47:33,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:47:33,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:47:33,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:47:33,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:47:33,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:47:33,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:47:33,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:47:33,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:47:33,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:47:33,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:47:33,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:47:33,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:47:33,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:47:33,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:47:33,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:47:33,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:47:33,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:47:33,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:47:33,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:47:33,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:47:33,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:47:33,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:47:33,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:47:33,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:47:33,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:47:33,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:47:33,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:47:33,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:47:33,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:47:33,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:47:33,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:47:33,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:47:33,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:47:33,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:47:33,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:47:33,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:47:33,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:47:33,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:47:33,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:47:33,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:47:33,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:47:33,269 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:47:33,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:47:33,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:47:33,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:47:33,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:47:33,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:47:33,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:47:33,270 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:47:33,270 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:47:33,271 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:47:33,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:47:33,271 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:47:33,271 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:47:33,271 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:47:33,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:47:33,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:47:33,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:47:33,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:47:33,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:47:33,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:47:33,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:47:33,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:47:33,273 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:47:33,273 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:47:33,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:47:33,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:47:33,274 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_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7aa8b24faa4bd1f5dc31e6b8da91b11ca919e76 [2021-10-13 00:47:33,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:47:33,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:47:33,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:47:33,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:47:33,722 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:47:33,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-10-13 00:47:33,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/61b3c6472/344ca34c93434fb3842ae80dc2a3a90e/FLAGbcb004d8f [2021-10-13 00:47:34,318 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:47:34,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-10-13 00:47:34,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/61b3c6472/344ca34c93434fb3842ae80dc2a3a90e/FLAGbcb004d8f [2021-10-13 00:47:34,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/data/61b3c6472/344ca34c93434fb3842ae80dc2a3a90e [2021-10-13 00:47:34,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:47:34,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:47:34,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:47:34,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:47:34,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:47:34,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:47:34" (1/1) ... [2021-10-13 00:47:34,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433ad983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:34, skipping insertion in model container [2021-10-13 00:47:34,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:47:34" (1/1) ... [2021-10-13 00:47:34,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:47:34,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:47:35,140 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_9737e706-74f7-430f-8196-e647606eeb63/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-10-13 00:47:35,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:47:35,202 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 00:47:35,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:47:35,252 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_9737e706-74f7-430f-8196-e647606eeb63/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-10-13 00:47:35,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:47:35,299 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:47:35,339 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_9737e706-74f7-430f-8196-e647606eeb63/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-10-13 00:47:35,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:47:35,448 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:47:35,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35 WrapperNode [2021-10-13 00:47:35,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:47:35,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:47:35,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:47:35,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:47:35,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:47:35,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:47:35,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:47:35,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:47:35,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (1/1) ... [2021-10-13 00:47:35,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:47:35,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:47:35,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:47:35,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:47:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:47:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:47:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-10-13 00:47:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-10-13 00:47:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2021-10-13 00:47:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2021-10-13 00:47:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2021-10-13 00:47:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2021-10-13 00:47:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-10-13 00:47:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2021-10-13 00:47:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2021-10-13 00:47:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:47:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:47:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:47:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:47:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:47:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:47:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:47:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:47:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:47:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:47:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:47:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:47:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:47:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:47:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:47:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:47:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:47:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:47:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:47:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:47:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:47:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:47:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:47:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:47:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:47:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:47:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:47:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:47:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:47:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:47:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:47:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2021-10-13 00:47:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2021-10-13 00:47:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2021-10-13 00:47:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2021-10-13 00:47:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2021-10-13 00:47:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2021-10-13 00:47:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2021-10-13 00:47:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2021-10-13 00:47:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2021-10-13 00:47:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-10-13 00:47:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2021-10-13 00:47:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2021-10-13 00:47:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2021-10-13 00:47:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2021-10-13 00:47:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-10-13 00:47:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2021-10-13 00:47:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2021-10-13 00:47:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2021-10-13 00:47:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2021-10-13 00:47:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2021-10-13 00:47:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2021-10-13 00:47:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-10-13 00:47:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2021-10-13 00:47:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2021-10-13 00:47:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2021-10-13 00:47:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:47:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2021-10-13 00:47:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:47:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:47:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:47:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:47:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 00:47:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 00:47:36,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:47:36,974 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-10-13 00:47:36,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:47:36 BoogieIcfgContainer [2021-10-13 00:47:36,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:47:36,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:47:36,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:47:36,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:47:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:47:34" (1/3) ... [2021-10-13 00:47:36,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461d69d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:47:36, skipping insertion in model container [2021-10-13 00:47:36,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:47:35" (2/3) ... [2021-10-13 00:47:36,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461d69d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:47:36, skipping insertion in model container [2021-10-13 00:47:36,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:47:36" (3/3) ... [2021-10-13 00:47:36,992 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2021-10-13 00:47:36,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:47:36,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-13 00:47:37,054 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:47:37,064 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, mConcurrency=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 [2021-10-13 00:47:37,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-13 00:47:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 123 states have (on average 2.089430894308943) internal successors, (257), 213 states have internal predecessors, (257), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-10-13 00:47:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:47:37,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:37,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:37,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gl_insertErr0REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:47:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash 963234318, now seen corresponding path program 1 times [2021-10-13 00:47:37,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:47:37,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192444513] [2021-10-13 00:47:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:37,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:47:37,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:47:37,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:47:37,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:47:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:47:37,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 00:47:37,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:37,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:47:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:37,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:47:37,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192444513] [2021-10-13 00:47:37,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192444513] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:47:37,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:47:37,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:47:37,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369203930] [2021-10-13 00:47:37,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:47:37,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:47:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:47:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:47:37,539 INFO L87 Difference]: Start difference. First operand has 240 states, 123 states have (on average 2.089430894308943) internal successors, (257), 213 states have internal predecessors, (257), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:47:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:37,596 INFO L93 Difference]: Finished difference Result 236 states and 258 transitions. [2021-10-13 00:47:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:47:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 00:47:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:37,615 INFO L225 Difference]: With dead ends: 236 [2021-10-13 00:47:37,615 INFO L226 Difference]: Without dead ends: 233 [2021-10-13 00:47:37,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:47:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-10-13 00:47:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-10-13 00:47:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 119 states have (on average 1.7563025210084033) internal successors, (209), 206 states have internal predecessors, (209), 31 states have call successors, (31), 14 states have call predecessors, (31), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 00:47:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 255 transitions. [2021-10-13 00:47:37,695 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 255 transitions. Word has length 10 [2021-10-13 00:47:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:37,696 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 255 transitions. [2021-10-13 00:47:37,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:47:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 255 transitions. [2021-10-13 00:47:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:47:37,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:37,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:37,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:37,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:47:37,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gl_insertErr0REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:47:37,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:37,918 INFO L82 PathProgramCache]: Analyzing trace with hash 963234380, now seen corresponding path program 1 times [2021-10-13 00:47:37,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:47:37,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854952786] [2021-10-13 00:47:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:37,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:47:37,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:47:37,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:47:37,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:47:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:47:38,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:47:38,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:38,201 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 [2021-10-13 00:47:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:38,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:47:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:38,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:47:38,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854952786] [2021-10-13 00:47:38,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854952786] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:47:38,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:47:38,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:47:38,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505484779] [2021-10-13 00:47:38,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:47:38,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:47:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:47:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:47:38,255 INFO L87 Difference]: Start difference. First operand 233 states and 255 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:47:38,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:38,497 INFO L93 Difference]: Finished difference Result 230 states and 252 transitions. [2021-10-13 00:47:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:47:38,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 00:47:38,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:38,500 INFO L225 Difference]: With dead ends: 230 [2021-10-13 00:47:38,500 INFO L226 Difference]: Without dead ends: 230 [2021-10-13 00:47:38,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:47:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-13 00:47:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-10-13 00:47:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 119 states have (on average 1.73109243697479) internal successors, (206), 203 states have internal predecessors, (206), 31 states have call successors, (31), 14 states have call predecessors, (31), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 00:47:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 252 transitions. [2021-10-13 00:47:38,514 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 252 transitions. Word has length 10 [2021-10-13 00:47:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:38,515 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 252 transitions. [2021-10-13 00:47:38,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:47:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 252 transitions. [2021-10-13 00:47:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:47:38,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:38,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:38,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:38,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:47:38,727 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gl_insertErr1REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:47:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash 963234381, now seen corresponding path program 1 times [2021-10-13 00:47:38,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:47:38,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464595583] [2021-10-13 00:47:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:38,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:47:38,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:47:38,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:47:38,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:47:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:47:38,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:47:38,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:38,974 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 [2021-10-13 00:47:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:39,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:47:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:39,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:47:39,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464595583] [2021-10-13 00:47:39,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464595583] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:47:39,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:47:39,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 00:47:39,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786722550] [2021-10-13 00:47:39,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:47:39,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:47:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:47:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:47:39,090 INFO L87 Difference]: Start difference. First operand 230 states and 252 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:47:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:39,550 INFO L93 Difference]: Finished difference Result 227 states and 249 transitions. [2021-10-13 00:47:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:47:39,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-13 00:47:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:39,554 INFO L225 Difference]: With dead ends: 227 [2021-10-13 00:47:39,554 INFO L226 Difference]: Without dead ends: 227 [2021-10-13 00:47:39,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:47:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-13 00:47:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-10-13 00:47:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 200 states have internal predecessors, (203), 31 states have call successors, (31), 14 states have call predecessors, (31), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 00:47:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 249 transitions. [2021-10-13 00:47:39,566 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 249 transitions. Word has length 10 [2021-10-13 00:47:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:39,567 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 249 transitions. [2021-10-13 00:47:39,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:47:39,567 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 249 transitions. [2021-10-13 00:47:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:47:39,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:39,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:39,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:39,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:47:39,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:47:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1039428672, now seen corresponding path program 1 times [2021-10-13 00:47:39,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:47:39,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733516090] [2021-10-13 00:47:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:39,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:47:39,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:47:39,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:47:39,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:47:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:47:40,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:47:40,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:40,075 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 00:47:40,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 00:47:40,311 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 00:47:40,311 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 [2021-10-13 00:47:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:40,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:47:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:47:56,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:47:56,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733516090] [2021-10-13 00:47:56,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733516090] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:47:56,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:47:56,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:47:56,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693583902] [2021-10-13 00:47:56,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:47:56,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:47:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:47:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-10-13 00:47:56,899 INFO L87 Difference]: Start difference. First operand 227 states and 249 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:47:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:47:58,290 INFO L93 Difference]: Finished difference Result 253 states and 275 transitions. [2021-10-13 00:47:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:47:58,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-10-13 00:47:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:47:58,293 INFO L225 Difference]: With dead ends: 253 [2021-10-13 00:47:58,293 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 00:47:58,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 16389.0ms TimeCoverageRelationStatistics Valid=45, Invalid=85, Unknown=2, NotChecked=0, Total=132 [2021-10-13 00:47:58,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 00:47:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 232. [2021-10-13 00:47:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 124 states have (on average 1.6774193548387097) internal successors, (208), 203 states have internal predecessors, (208), 32 states have call successors, (32), 15 states have call predecessors, (32), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-13 00:47:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 256 transitions. [2021-10-13 00:47:58,308 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 256 transitions. Word has length 13 [2021-10-13 00:47:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:47:58,308 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 256 transitions. [2021-10-13 00:47:58,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:47:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 256 transitions. [2021-10-13 00:47:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:47:58,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:47:58,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:47:58,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:47:58,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:47:58,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:47:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:47:58,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1039428673, now seen corresponding path program 1 times [2021-10-13 00:47:58,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:47:58,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406269852] [2021-10-13 00:47:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:47:58,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:47:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:47:58,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:47:58,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:47:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:47:58,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:47:58,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:47:58,844 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-13 00:47:58,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 42 [2021-10-13 00:47:58,916 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 00:47:58,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 63 [2021-10-13 00:47:59,367 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-13 00:47:59,367 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 3 case distinctions, treesize of input 44 treesize of output 51 [2021-10-13 00:47:59,405 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-13 00:47:59,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-10-13 00:48:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:00,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:48:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:09,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:48:09,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406269852] [2021-10-13 00:48:09,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406269852] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:09,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:09,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 00:48:09,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23557725] [2021-10-13 00:48:09,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:48:09,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:48:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:48:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=65, Unknown=2, NotChecked=0, Total=90 [2021-10-13 00:48:09,044 INFO L87 Difference]: Start difference. First operand 232 states and 256 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:48:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:11,582 INFO L93 Difference]: Finished difference Result 249 states and 272 transitions. [2021-10-13 00:48:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:48:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-10-13 00:48:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:11,586 INFO L225 Difference]: With dead ends: 249 [2021-10-13 00:48:11,586 INFO L226 Difference]: Without dead ends: 249 [2021-10-13 00:48:11,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8818.2ms TimeCoverageRelationStatistics Valid=59, Invalid=121, Unknown=2, NotChecked=0, Total=182 [2021-10-13 00:48:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-10-13 00:48:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 229. [2021-10-13 00:48:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 124 states have (on average 1.6370967741935485) internal successors, (203), 200 states have internal predecessors, (203), 32 states have call successors, (32), 15 states have call predecessors, (32), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-13 00:48:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 251 transitions. [2021-10-13 00:48:11,605 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 251 transitions. Word has length 13 [2021-10-13 00:48:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:11,606 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 251 transitions. [2021-10-13 00:48:11,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:48:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 251 transitions. [2021-10-13 00:48:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:48:11,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:11,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:11,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 00:48:11,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:48:11,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __list_addErr0REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:48:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:11,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1094064828, now seen corresponding path program 1 times [2021-10-13 00:48:11,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:48:11,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283751746] [2021-10-13 00:48:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:11,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:48:11,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:48:11,819 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:48:11,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:48:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:12,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 00:48:12,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:12,212 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 00:48:12,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 00:48:12,534 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 00:48:12,535 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 14 treesize of output 14 [2021-10-13 00:48:12,636 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 00:48:12,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 60 treesize of output 15 [2021-10-13 00:48:12,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-13 00:48:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:12,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:48:12,905 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-13 00:48:12,905 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 29 treesize of output 28 [2021-10-13 00:48:35,746 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (gl_insert_~node~1.offset (_ BitVec 32)) (v_gl_insert_~node~1.base_19 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~1.base_19))))))) (= |c_~#gl_list~0.base| (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_19 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_19) gl_insert_~node~1.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~1.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~1.offset) v_DerPreprocessor_3) (bvadd gl_insert_~node~1.offset (_ bv3 32)) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) is different from false [2021-10-13 00:48:37,801 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (gl_insert_~node~1.offset (_ BitVec 32)) (v_gl_insert_~node~1.base_19 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_gl_insert_~node~1.base_19)))))))) (= |c_~#gl_list~0.base| (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_19 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_19) gl_insert_~node~1.offset v_DerPreprocessor_1) (bvadd gl_insert_~node~1.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) gl_insert_~node~1.offset) v_DerPreprocessor_3) (bvadd gl_insert_~node~1.offset (_ bv3 32)) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) is different from false [2021-10-13 00:48:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:37,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:48:37,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283751746] [2021-10-13 00:48:37,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283751746] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:48:37,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:48:37,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 11] imperfect sequences [] total 13 [2021-10-13 00:48:37,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66942189] [2021-10-13 00:48:37,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:48:37,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:48:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:48:37,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=100, Unknown=10, NotChecked=42, Total=182 [2021-10-13 00:48:37,998 INFO L87 Difference]: Start difference. First operand 229 states and 251 transitions. Second operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:48:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:48:43,759 INFO L93 Difference]: Finished difference Result 252 states and 276 transitions. [2021-10-13 00:48:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:48:43,760 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-10-13 00:48:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:48:43,761 INFO L225 Difference]: With dead ends: 252 [2021-10-13 00:48:43,761 INFO L226 Difference]: Without dead ends: 252 [2021-10-13 00:48:43,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 29135.5ms TimeCoverageRelationStatistics Valid=80, Invalid=258, Unknown=12, NotChecked=70, Total=420 [2021-10-13 00:48:43,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-13 00:48:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 244. [2021-10-13 00:48:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 135 states have (on average 1.637037037037037) internal successors, (221), 211 states have internal predecessors, (221), 35 states have call successors, (35), 18 states have call predecessors, (35), 14 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:48:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 275 transitions. [2021-10-13 00:48:43,772 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 275 transitions. Word has length 16 [2021-10-13 00:48:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:48:43,772 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 275 transitions. [2021-10-13 00:48:43,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:48:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 275 transitions. [2021-10-13 00:48:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:48:43,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:48:43,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:48:43,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:48:43,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:48:43,991 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __list_addErr1REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:48:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:48:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1094064827, now seen corresponding path program 1 times [2021-10-13 00:48:43,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:48:43,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066612164] [2021-10-13 00:48:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:48:43,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:48:43,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:48:44,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:48:44,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:48:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:48:44,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 00:48:44,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:48:44,409 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 00:48:44,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 49 [2021-10-13 00:48:44,501 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-13 00:48:44,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 63 [2021-10-13 00:48:45,105 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-10-13 00:48:45,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 65 [2021-10-13 00:48:45,162 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-13 00:48:45,162 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 3 case distinctions, treesize of input 60 treesize of output 67 [2021-10-13 00:48:45,409 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 00:48:45,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 116 treesize of output 71 [2021-10-13 00:48:45,466 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-13 00:48:45,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 68 treesize of output 23 [2021-10-13 00:48:45,679 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 34 treesize of output 26 [2021-10-13 00:48:45,682 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 23 treesize of output 15 [2021-10-13 00:48:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:48:45,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:48:48,874 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (gl_insert_~node~1.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd gl_insert_~node~1.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) gl_insert_~node~1.offset)) (.cse2 (bvadd gl_insert_~node~1.offset (_ bv3 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| c_gl_insert_~node~1.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_gl_insert_~node~1.base) gl_insert_~node~1.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_gl_insert_~node~1.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_gl_insert_~node~1.base) gl_insert_~node~1.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (gl_insert_~node~1.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| c_gl_insert_~node~1.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_gl_insert_~node~1.base) gl_insert_~node~1.offset v_DerPreprocessor_9) (bvadd gl_insert_~node~1.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) gl_insert_~node~1.offset) v_DerPreprocessor_11) (bvadd gl_insert_~node~1.offset (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3))))) is different from false [2021-10-13 00:49:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:15,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:49:15,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066612164] [2021-10-13 00:49:15,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066612164] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:15,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:15,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-10-13 00:49:15,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927307254] [2021-10-13 00:49:15,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:49:15,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:49:15,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:49:15,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=228, Unknown=5, NotChecked=30, Total=306 [2021-10-13 00:49:15,655 INFO L87 Difference]: Start difference. First operand 244 states and 275 transitions. Second operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:49:35,887 WARN L207 SmtUtils]: Spent 8.21 s on a formula simplification that was a NOOP. DAG size: 83 [2021-10-13 00:49:49,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:49,991 INFO L93 Difference]: Finished difference Result 247 states and 275 transitions. [2021-10-13 00:49:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:49:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-10-13 00:49:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:49,997 INFO L225 Difference]: With dead ends: 247 [2021-10-13 00:49:49,997 INFO L226 Difference]: Without dead ends: 247 [2021-10-13 00:49:49,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 48348.2ms TimeCoverageRelationStatistics Valid=111, Invalid=437, Unknown=8, NotChecked=44, Total=600 [2021-10-13 00:49:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-13 00:49:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2021-10-13 00:49:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 135 states have (on average 1.6296296296296295) internal successors, (220), 211 states have internal predecessors, (220), 35 states have call successors, (35), 18 states have call predecessors, (35), 14 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:49:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 274 transitions. [2021-10-13 00:49:50,007 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 274 transitions. Word has length 16 [2021-10-13 00:49:50,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:50,008 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 274 transitions. [2021-10-13 00:49:50,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:49:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 274 transitions. [2021-10-13 00:49:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:49:50,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:50,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:50,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:50,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:49:50,210 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr2REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:49:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:50,210 INFO L82 PathProgramCache]: Analyzing trace with hash 443729184, now seen corresponding path program 1 times [2021-10-13 00:49:50,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:49:50,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862023459] [2021-10-13 00:49:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:50,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:49:50,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:49:50,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:49:50,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:49:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:50,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:49:50,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:50,477 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 [2021-10-13 00:49:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:50,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:49:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:50,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:49:50,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862023459] [2021-10-13 00:49:50,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862023459] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:50,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:50,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 00:49:50,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656417351] [2021-10-13 00:49:50,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:49:50,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:49:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:49:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:49:50,650 INFO L87 Difference]: Start difference. First operand 244 states and 274 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:49:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:51,417 INFO L93 Difference]: Finished difference Result 256 states and 283 transitions. [2021-10-13 00:49:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:49:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-13 00:49:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:51,421 INFO L225 Difference]: With dead ends: 256 [2021-10-13 00:49:51,421 INFO L226 Difference]: Without dead ends: 256 [2021-10-13 00:49:51,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 99.9ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:49:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-13 00:49:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2021-10-13 00:49:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 141 states have (on average 1.624113475177305) internal successors, (229), 216 states have internal predecessors, (229), 35 states have call successors, (35), 19 states have call predecessors, (35), 15 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:49:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 283 transitions. [2021-10-13 00:49:51,453 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 283 transitions. Word has length 17 [2021-10-13 00:49:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:51,454 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 283 transitions. [2021-10-13 00:49:51,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:49:51,454 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 283 transitions. [2021-10-13 00:49:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:49:51,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:51,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:51,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:51,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:49:51,663 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr3REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:49:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:51,663 INFO L82 PathProgramCache]: Analyzing trace with hash 443729185, now seen corresponding path program 1 times [2021-10-13 00:49:51,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:49:51,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633878394] [2021-10-13 00:49:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:51,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:49:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:49:51,665 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:49:51,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 00:49:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:51,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:49:51,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:51,980 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 [2021-10-13 00:49:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:52,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:49:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:52,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:49:52,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633878394] [2021-10-13 00:49:52,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633878394] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:52,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:52,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 00:49:52,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145049339] [2021-10-13 00:49:52,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:49:52,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:49:52,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:49:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:49:52,728 INFO L87 Difference]: Start difference. First operand 250 states and 283 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:49:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:55,141 INFO L93 Difference]: Finished difference Result 254 states and 279 transitions. [2021-10-13 00:49:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:49:55,143 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-13 00:49:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:55,144 INFO L225 Difference]: With dead ends: 254 [2021-10-13 00:49:55,144 INFO L226 Difference]: Without dead ends: 254 [2021-10-13 00:49:55,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 536.5ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:49:55,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-13 00:49:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2021-10-13 00:49:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 141 states have (on average 1.5957446808510638) internal successors, (225), 216 states have internal predecessors, (225), 35 states have call successors, (35), 19 states have call predecessors, (35), 15 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:49:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-10-13 00:49:55,155 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 17 [2021-10-13 00:49:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:55,156 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-10-13 00:49:55,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:49:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-10-13 00:49:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:49:55,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:55,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:55,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:55,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:49:55,358 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr6REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:49:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1221999107, now seen corresponding path program 1 times [2021-10-13 00:49:55,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:49:55,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036715777] [2021-10-13 00:49:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:55,358 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:49:55,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:49:55,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:49:55,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 00:49:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:55,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:49:55,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:55,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:49:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:55,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:49:55,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036715777] [2021-10-13 00:49:55,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036715777] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:55,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:55,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 00:49:55,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496963262] [2021-10-13 00:49:55,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:49:55,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:49:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:49:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:49:55,814 INFO L87 Difference]: Start difference. First operand 250 states and 279 transitions. Second operand has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:49:56,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:56,252 INFO L93 Difference]: Finished difference Result 249 states and 276 transitions. [2021-10-13 00:49:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:49:56,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-13 00:49:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:56,257 INFO L225 Difference]: With dead ends: 249 [2021-10-13 00:49:56,258 INFO L226 Difference]: Without dead ends: 249 [2021-10-13 00:49:56,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-10-13 00:49:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-10-13 00:49:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 141 states have (on average 1.574468085106383) internal successors, (222), 215 states have internal predecessors, (222), 35 states have call successors, (35), 19 states have call predecessors, (35), 15 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:49:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2021-10-13 00:49:56,273 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 19 [2021-10-13 00:49:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:56,274 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2021-10-13 00:49:56,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:49:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2021-10-13 00:49:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:49:56,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:56,275 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:56,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:56,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:49:56,487 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr7REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:49:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:56,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1221999108, now seen corresponding path program 1 times [2021-10-13 00:49:56,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:49:56,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120146167] [2021-10-13 00:49:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:56,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:49:56,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:49:56,490 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:49:56,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 00:49:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:56,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:49:56,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:56,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:49:57,221 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 [2021-10-13 00:49:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:57,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:49:57,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120146167] [2021-10-13 00:49:57,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120146167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:57,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:57,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 00:49:57,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577219510] [2021-10-13 00:49:57,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:49:57,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:49:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:49:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:49:57,464 INFO L87 Difference]: Start difference. First operand 249 states and 276 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:49:58,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:58,942 INFO L93 Difference]: Finished difference Result 250 states and 273 transitions. [2021-10-13 00:49:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:49:58,943 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-13 00:49:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:58,945 INFO L225 Difference]: With dead ends: 250 [2021-10-13 00:49:58,945 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 00:49:58,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 686.7ms TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:49:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 00:49:58,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2021-10-13 00:49:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 141 states have (on average 1.553191489361702) internal successors, (219), 214 states have internal predecessors, (219), 35 states have call successors, (35), 19 states have call predecessors, (35), 15 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:49:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 273 transitions. [2021-10-13 00:49:58,957 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 273 transitions. Word has length 19 [2021-10-13 00:49:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:58,957 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 273 transitions. [2021-10-13 00:49:58,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:49:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 273 transitions. [2021-10-13 00:49:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:49:58,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:58,958 INFO L512 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] [2021-10-13 00:49:58,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:59,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:49:59,159 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:49:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:59,159 INFO L82 PathProgramCache]: Analyzing trace with hash 695927283, now seen corresponding path program 1 times [2021-10-13 00:49:59,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:49:59,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608631303] [2021-10-13 00:49:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:59,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:49:59,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:49:59,161 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:49:59,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:49:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:59,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:49:59,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:59,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:49:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:59,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:49:59,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608631303] [2021-10-13 00:49:59,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608631303] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:59,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:59,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:49:59,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644377377] [2021-10-13 00:49:59,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:49:59,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:49:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:49:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:49:59,795 INFO L87 Difference]: Start difference. First operand 248 states and 273 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:50:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:00,012 INFO L93 Difference]: Finished difference Result 247 states and 271 transitions. [2021-10-13 00:50:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:50:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 38 [2021-10-13 00:50:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:00,014 INFO L225 Difference]: With dead ends: 247 [2021-10-13 00:50:00,014 INFO L226 Difference]: Without dead ends: 247 [2021-10-13 00:50:00,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:50:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-13 00:50:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-10-13 00:50:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 141 states have (on average 1.5460992907801419) internal successors, (218), 213 states have internal predecessors, (218), 34 states have call successors, (34), 19 states have call predecessors, (34), 15 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:50:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 271 transitions. [2021-10-13 00:50:00,023 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 271 transitions. Word has length 38 [2021-10-13 00:50:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:00,024 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 271 transitions. [2021-10-13 00:50:00,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:50:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 271 transitions. [2021-10-13 00:50:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:50:00,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:00,026 INFO L512 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] [2021-10-13 00:50:00,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:00,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:50:00,246 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr0REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:50:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:00,247 INFO L82 PathProgramCache]: Analyzing trace with hash 695915251, now seen corresponding path program 1 times [2021-10-13 00:50:00,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:50:00,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410870493] [2021-10-13 00:50:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:00,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:50:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:50:00,249 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:50:00,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 00:50:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:00,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:50:00,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:00,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:50:01,116 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 00:50:01,116 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 21 treesize of output 20 [2021-10-13 00:50:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:01,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:50:01,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410870493] [2021-10-13 00:50:01,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410870493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:01,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:01,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-10-13 00:50:01,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16891351] [2021-10-13 00:50:01,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:50:01,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:50:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:50:01,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:50:01,141 INFO L87 Difference]: Start difference. First operand 247 states and 271 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:50:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:02,142 INFO L93 Difference]: Finished difference Result 242 states and 266 transitions. [2021-10-13 00:50:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:50:02,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2021-10-13 00:50:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:02,146 INFO L225 Difference]: With dead ends: 242 [2021-10-13 00:50:02,146 INFO L226 Difference]: Without dead ends: 242 [2021-10-13 00:50:02,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:50:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-13 00:50:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-13 00:50:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 141 states have (on average 1.5106382978723405) internal successors, (213), 208 states have internal predecessors, (213), 34 states have call successors, (34), 19 states have call predecessors, (34), 15 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:50:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 266 transitions. [2021-10-13 00:50:02,155 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 266 transitions. Word has length 38 [2021-10-13 00:50:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:02,156 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 266 transitions. [2021-10-13 00:50:02,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:50:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 266 transitions. [2021-10-13 00:50:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:50:02,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:02,157 INFO L512 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] [2021-10-13 00:50:02,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:02,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:50:02,375 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting inspectErr1REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:50:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash 695915252, now seen corresponding path program 1 times [2021-10-13 00:50:02,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:50:02,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941920814] [2021-10-13 00:50:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:02,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:50:02,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:50:02,378 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:50:02,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 00:50:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:02,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:50:02,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:03,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:50:03,619 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 [2021-10-13 00:50:04,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 00:50:04,249 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 16 treesize of output 20 [2021-10-13 00:50:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:04,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:50:04,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941920814] [2021-10-13 00:50:04,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941920814] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:04,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:04,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-10-13 00:50:04,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642180802] [2021-10-13 00:50:04,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:50:04,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:50:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:50:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:50:04,445 INFO L87 Difference]: Start difference. First operand 242 states and 266 transitions. Second operand has 15 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 00:50:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:07,107 INFO L93 Difference]: Finished difference Result 240 states and 264 transitions. [2021-10-13 00:50:07,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:50:07,107 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 38 [2021-10-13 00:50:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:07,109 INFO L225 Difference]: With dead ends: 240 [2021-10-13 00:50:07,110 INFO L226 Difference]: Without dead ends: 240 [2021-10-13 00:50:07,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 846.3ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:50:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-13 00:50:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-10-13 00:50:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 141 states have (on average 1.49645390070922) internal successors, (211), 206 states have internal predecessors, (211), 34 states have call successors, (34), 19 states have call predecessors, (34), 15 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:50:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 264 transitions. [2021-10-13 00:50:07,118 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 264 transitions. Word has length 38 [2021-10-13 00:50:07,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:07,119 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 264 transitions. [2021-10-13 00:50:07,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 00:50:07,119 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 264 transitions. [2021-10-13 00:50:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 00:50:07,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:07,121 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:07,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:50:07,326 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __list_addErr0REQUIRES_VIOLATION === [__list_delErr0REQUIRES_VIOLATION, __list_delErr1REQUIRES_VIOLATION, __list_delErr2REQUIRES_VIOLATION, __list_delErr3REQUIRES_VIOLATION (and 67 more)] === [2021-10-13 00:50:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:07,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1621786009, now seen corresponding path program 1 times [2021-10-13 00:50:07,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:50:07,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733238245] [2021-10-13 00:50:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:07,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:50:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:50:07,330 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:50:07,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 00:50:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:07,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 00:50:07,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:07,916 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 00:50:07,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 00:50:08,102 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 [2021-10-13 00:50:08,154 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 0 case distinctions, treesize of input 13 treesize of output 10 [2021-10-13 00:50:08,440 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 11 treesize of output 7 [2021-10-13 00:50:08,668 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-13 00:50:08,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-10-13 00:50:08,806 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-13 00:50:08,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 45 [2021-10-13 00:50:14,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 00:50:14,999 INFO L354 Elim1Store]: treesize reduction 18, result has 30.8 percent of original size [2021-10-13 00:50:15,001 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 34 treesize of output 33 [2021-10-13 00:50:17,386 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-10-13 00:50:17,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 61 [2021-10-13 00:50:17,920 INFO L354 Elim1Store]: treesize reduction 809, result has 3.1 percent of original size [2021-10-13 00:50:17,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 127 treesize of output 67 [2021-10-13 00:50:18,513 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-10-13 00:50:18,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 73 [2021-10-13 00:50:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:19,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:50:33,796 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~1.base_42 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (gl_insert_~node~1.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~1.base_42 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_42 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_42) gl_insert_~node~1.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~1.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~1.offset) v_DerPreprocessor_15) (bvadd gl_insert_~node~1.offset (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| v_gl_insert_~node~1.base_42))))) is different from false [2021-10-13 00:50:34,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:50:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733238245] [2021-10-13 00:50:34,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 00:50:34,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150191889] [2021-10-13 00:50:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:34,400 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 00:50:34,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/cvc4 [2021-10-13 00:50:34,402 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 00:50:34,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-13 00:50:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:35,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 00:50:35,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:35,268 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 9 treesize of output 3 [2021-10-13 00:50:35,371 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 [2021-10-13 00:50:36,298 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 11 treesize of output 7 [2021-10-13 00:50:37,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 00:50:37,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 00:50:37,345 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-13 00:50:37,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 44 [2021-10-13 00:50:38,040 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-10-13 00:50:38,040 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 29 treesize of output 40 [2021-10-13 00:50:38,748 INFO L354 Elim1Store]: treesize reduction 809, result has 3.1 percent of original size [2021-10-13 00:50:38,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 129 treesize of output 69 [2021-10-13 00:50:39,699 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-10-13 00:50:39,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 57 [2021-10-13 00:50:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:40,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:50:51,828 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 00:50:51,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 15182 treesize of output 14780 [2021-10-13 00:50:52,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 00:50:52,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179817423] [2021-10-13 00:50:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:52,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:52,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:52,595 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:52,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:50:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:53,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 00:50:53,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:53,313 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 00:50:53,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 00:50:53,475 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 9 treesize of output 7 [2021-10-13 00:50:53,508 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 0 case distinctions, treesize of input 13 treesize of output 10 [2021-10-13 00:50:53,672 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 11 treesize of output 7 [2021-10-13 00:50:54,094 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-13 00:50:54,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-10-13 00:50:54,333 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-13 00:50:54,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 45 [2021-10-13 00:51:04,647 INFO L354 Elim1Store]: treesize reduction 23, result has 42.5 percent of original size [2021-10-13 00:51:04,647 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 34 treesize of output 41 [2021-10-13 00:51:06,947 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-10-13 00:51:06,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 58 [2021-10-13 00:51:07,372 INFO L354 Elim1Store]: treesize reduction 809, result has 3.1 percent of original size [2021-10-13 00:51:07,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 127 treesize of output 67 [2021-10-13 00:51:07,667 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-10-13 00:51:07,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 73 [2021-10-13 00:51:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:51:07,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:51:23,496 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_gl_insert_~node~1.base_52 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (gl_insert_~node~1.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_gl_insert_~node~1.base_52)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_gl_insert_~node~1.base_52 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_52 (store (store (store (store (select |c_#memory_$Pointer$.base| v_gl_insert_~node~1.base_52) gl_insert_~node~1.offset v_DerPreprocessor_13) (bvadd gl_insert_~node~1.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) gl_insert_~node~1.offset) v_DerPreprocessor_15) (bvadd gl_insert_~node~1.offset (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))))))) (_ bv1 1))))) is different from false [2021-10-13 00:51:24,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 00:51:24,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:51:24,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 00:51:24,065 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-13 00:51:24,065 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 00:51:24,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr2REQUIRES_VIOLATION [2021-10-13 00:51:24,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr3REQUIRES_VIOLATION [2021-10-13 00:51:24,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr2REQUIRES_VIOLATION [2021-10-13 00:51:24,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr3REQUIRES_VIOLATION [2021-10-13 00:51:24,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr4REQUIRES_VIOLATION [2021-10-13 00:51:24,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_insertErr5REQUIRES_VIOLATION [2021-10-13 00:51:24,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sort_passErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sort_passErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sort_passErr2REQUIRES_VIOLATION [2021-10-13 00:51:24,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_sort_passErr3REQUIRES_VIOLATION [2021-10-13 00:51:24,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr2REQUIRES_VIOLATION [2021-10-13 00:51:24,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr3REQUIRES_VIOLATION [2021-10-13 00:51:24,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr4REQUIRES_VIOLATION [2021-10-13 00:51:24,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr5REQUIRES_VIOLATION [2021-10-13 00:51:24,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr6REQUIRES_VIOLATION [2021-10-13 00:51:24,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr7REQUIRES_VIOLATION [2021-10-13 00:51:24,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr8REQUIRES_VIOLATION [2021-10-13 00:51:24,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr9REQUIRES_VIOLATION [2021-10-13 00:51:24,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr10REQUIRES_VIOLATION [2021-10-13 00:51:24,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr11REQUIRES_VIOLATION [2021-10-13 00:51:24,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr12REQUIRES_VIOLATION [2021-10-13 00:51:24,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr13REQUIRES_VIOLATION [2021-10-13 00:51:24,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr14REQUIRES_VIOLATION [2021-10-13 00:51:24,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr15REQUIRES_VIOLATION [2021-10-13 00:51:24,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr16REQUIRES_VIOLATION [2021-10-13 00:51:24,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr17REQUIRES_VIOLATION [2021-10-13 00:51:24,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr18REQUIRES_VIOLATION [2021-10-13 00:51:24,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr19REQUIRES_VIOLATION [2021-10-13 00:51:24,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr20REQUIRES_VIOLATION [2021-10-13 00:51:24,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr21REQUIRES_VIOLATION [2021-10-13 00:51:24,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr22REQUIRES_VIOLATION [2021-10-13 00:51:24,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr23REQUIRES_VIOLATION [2021-10-13 00:51:24,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr24REQUIRES_VIOLATION [2021-10-13 00:51:24,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr25REQUIRES_VIOLATION [2021-10-13 00:51:24,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr26REQUIRES_VIOLATION [2021-10-13 00:51:24,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr27REQUIRES_VIOLATION [2021-10-13 00:51:24,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr28REQUIRES_VIOLATION [2021-10-13 00:51:24,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr29REQUIRES_VIOLATION [2021-10-13 00:51:24,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location failErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:51:24,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,081 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr2REQUIRES_VIOLATION [2021-10-13 00:51:24,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr3REQUIRES_VIOLATION [2021-10-13 00:51:24,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr4REQUIRES_VIOLATION [2021-10-13 00:51:24,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr5REQUIRES_VIOLATION [2021-10-13 00:51:24,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:51:24,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:51:24,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gl_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:51:24,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION [2021-10-13 00:51:24,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION [2021-10-13 00:51:24,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION [2021-10-13 00:51:24,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION [2021-10-13 00:51:24,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION [2021-10-13 00:51:24,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION [2021-10-13 00:51:24,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:51:24,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr0REQUIRES_VIOLATION [2021-10-13 00:51:24,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr1REQUIRES_VIOLATION [2021-10-13 00:51:24,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr2REQUIRES_VIOLATION [2021-10-13 00:51:24,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_moveErr3REQUIRES_VIOLATION [2021-10-13 00:51:24,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:51:24,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:51:24,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:51:24,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt [2021-10-13 00:51:24,705 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:51:24,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:51:24 BoogieIcfgContainer [2021-10-13 00:51:24,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:51:24,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:51:24,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:51:24,716 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:51:24,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:47:36" (3/4) ... [2021-10-13 00:51:24,721 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:51:24,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:51:24,722 INFO L168 Benchmark]: Toolchain (without parser) took 230094.29 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 55.1 MB in the beginning and 87.1 MB in the end (delta: -32.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:24,723 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:51:24,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.34 ms. Allocated memory is still 75.5 MB. Free memory was 54.9 MB in the beginning and 33.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:24,724 INFO L168 Benchmark]: Boogie Preprocessor took 121.52 ms. Allocated memory is still 75.5 MB. Free memory was 33.5 MB in the beginning and 53.8 MB in the end (delta: -20.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:24,724 INFO L168 Benchmark]: RCFGBuilder took 1412.82 ms. Allocated memory was 75.5 MB in the beginning and 107.0 MB in the end (delta: 31.5 MB). Free memory was 53.5 MB in the beginning and 63.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:24,725 INFO L168 Benchmark]: TraceAbstraction took 227728.97 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 62.5 MB in the beginning and 87.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:24,725 INFO L168 Benchmark]: Witness Printer took 5.61 ms. Allocated memory is still 134.2 MB. Free memory is still 87.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:51:24,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 820.34 ms. Allocated memory is still 75.5 MB. Free memory was 54.9 MB in the beginning and 33.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 121.52 ms. Allocated memory is still 75.5 MB. Free memory was 33.5 MB in the beginning and 53.8 MB in the end (delta: -20.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1412.82 ms. Allocated memory was 75.5 MB in the beginning and 107.0 MB in the end (delta: 31.5 MB). Free memory was 53.5 MB in the beginning and 63.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 227728.97 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 62.5 MB in the beginning and 87.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.61 ms. Allocated memory is still 134.2 MB. Free memory is still 87.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 878]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L850] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L949] CALL gl_read() [L909] CALL gl_insert(__VERIFIER_nondet_int()) [L899] struct node *node = malloc(sizeof *node); [L900] COND FALSE !(!node) [L902] node->value = value [L903] CALL list_add(&node->linkage, &gl_list) [L890] EXPR head->next [L890] CALL __list_add(new, head, head->next) [L878] next->prev = new [L879] new->next = next [L880] new->prev = prev [L881] prev->next = new [L890] RET __list_add(new, head, head->next) [L903] RET list_add(&node->linkage, &gl_list) [L904] (&node->nested)->next = (&node->nested) [L904] (&node->nested)->prev = (&node->nested) [L909] RET gl_insert(__VERIFIER_nondet_int()) [L911] COND TRUE __VERIFIER_nondet_int() [L909] CALL gl_insert(__VERIFIER_nondet_int()) [L899] struct node *node = malloc(sizeof *node); [L900] COND FALSE !(!node) [L902] node->value = value [L903] CALL list_add(&node->linkage, &gl_list) [L890] EXPR head->next [L890] CALL __list_add(new, head, head->next) [L878] next->prev = new - UnprovableResult [Line: 885]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 885]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 886]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 886]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 902]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 902]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 904]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 904]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 904]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 904]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 928]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 928]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 930]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 930]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 854]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 854]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 855]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 855]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 856]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 856]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 858]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 858]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 859]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 859]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 863]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 863]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 864]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 864]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 865]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 865]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 869]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 869]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 869]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 869]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 870]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 870]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 870]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 870]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 871]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 871]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 871]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 871]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 923]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 923]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 916]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 916]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 917]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 917]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 917]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 917]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 878]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 879]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 879]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 880]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 880]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 881]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 881]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 947]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 890]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 890]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 894]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 894]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 894]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 894]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 255 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 227650.9ms, OverallIterations: 15, TraceHistogramMax: 2, EmptinessCheckTime: 38.0ms, AutomataDifference: 53864.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2946 SDtfs, 3325 SDslu, 9659 SDs, 0 SdLazy, 5246 SolverSat, 502 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 26029.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 584 GetRequests, 407 SyntacticMatches, 32 SemanticMatches, 145 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 105153.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=8, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 232.5ms AutomataMinimizationTime, 14 MinimizatonAttempts, 64 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 159.8ms SsaConstructionTime, 810.5ms SatisfiabilityAnalysisTime, 89287.1ms InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 520 ConstructedInterpolants, 51 QuantifiedInterpolants, 5430 SizeOfPredicates, 118 NumberOfNonLiveVariables, 1994 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:51:24,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9737e706-74f7-430f-8196-e647606eeb63/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...