./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD --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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f ................................................................................................................................... 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_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD --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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 00:05:12,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:05:12,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:05:12,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:05:12,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:05:12,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:05:12,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:05:12,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:05:12,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:05:12,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:05:12,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:05:12,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:05:12,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:05:12,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:05:12,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:05:12,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:05:12,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:05:12,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:05:12,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:05:12,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:05:12,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:05:12,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:05:12,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:05:12,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:05:12,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:05:12,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:05:12,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:05:12,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:05:12,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:05:12,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:05:12,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:05:12,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:05:12,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:05:12,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:05:12,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:05:12,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:05:12,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:05:12,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:05:12,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:05:12,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:05:12,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:05:12,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-29 00:05:12,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:05:12,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:05:12,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:05:12,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:05:12,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:05:12,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:05:12,594 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:05:12,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:05:12,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:05:12,595 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 00:05:12,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:05:12,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:05:12,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:05:12,598 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 00:05:12,598 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 00:05:12,598 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 00:05:12,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:05:12,599 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 00:05:12,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:05:12,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:05:12,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:05:12,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:05:12,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:05:12,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:12,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:05:12,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:05:12,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:05:12,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 00:05:12,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:05:12,604 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_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-10-29 00:05:12,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:05:13,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:05:13,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:05:13,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:05:13,030 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:05:13,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 00:05:13,142 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/6a054cd8c/ea09357f5ba44cf7834f0d11f06d30e5/FLAG95a2a99a4 [2021-10-29 00:05:13,869 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:05:13,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 00:05:13,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/6a054cd8c/ea09357f5ba44cf7834f0d11f06d30e5/FLAG95a2a99a4 [2021-10-29 00:05:14,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/6a054cd8c/ea09357f5ba44cf7834f0d11f06d30e5 [2021-10-29 00:05:14,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:05:14,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-29 00:05:14,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:14,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:05:14,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:05:14,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:14" (1/1) ... [2021-10-29 00:05:14,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30816ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:14, skipping insertion in model container [2021-10-29 00:05:14,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:14" (1/1) ... [2021-10-29 00:05:14,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:05:14,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:05:14,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:14,594 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) [2021-10-29 00:05:14,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72e25f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:14, skipping insertion in model container [2021-10-29 00:05:14,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:14,596 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-29 00:05:14,599 INFO L168 Benchmark]: Toolchain (without parser) took 490.90 ms. Allocated memory is still 104.9 MB. Free memory was 65.2 MB in the beginning and 78.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:14,599 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:14,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.65 ms. Allocated memory is still 104.9 MB. Free memory was 65.0 MB in the beginning and 78.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:14,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 486.65 ms. Allocated memory is still 104.9 MB. Free memory was 65.0 MB in the beginning and 78.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: 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-b2eff8b [2021-10-29 00:05:17,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:05:17,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:05:17,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:05:17,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:05:17,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:05:17,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:05:17,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:05:17,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:05:17,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:05:17,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:05:17,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:05:17,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:05:17,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:05:17,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:05:17,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:05:17,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:05:17,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:05:17,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:05:17,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:05:17,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:05:17,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:05:17,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:05:17,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:05:17,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:05:17,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:05:17,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:05:17,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:05:17,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:05:17,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:05:17,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:05:17,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:05:17,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:05:17,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:05:17,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:05:17,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:05:17,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:05:17,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:05:17,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:05:17,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:05:17,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:05:17,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-29 00:05:17,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:05:17,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:05:17,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:05:17,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:05:17,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:05:17,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:05:17,522 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:05:17,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:05:17,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:05:17,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 00:05:17,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:05:17,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:05:17,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:05:17,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 00:05:17,526 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 00:05:17,526 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 00:05:17,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:05:17,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 00:05:17,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 00:05:17,527 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 00:05:17,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:05:17,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:05:17,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:05:17,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:05:17,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:05:17,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:17,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:05:17,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:05:17,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-29 00:05:17,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 00:05:17,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:05:17,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 00:05:17,530 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_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-10-29 00:05:17,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:05:18,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:05:18,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:05:18,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:05:18,008 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:05:18,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 00:05:18,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/ab6055133/3323de441094434bb4d9f014e3863074/FLAGcc6d626f1 [2021-10-29 00:05:18,786 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:05:18,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 00:05:18,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/ab6055133/3323de441094434bb4d9f014e3863074/FLAGcc6d626f1 [2021-10-29 00:05:19,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/data/ab6055133/3323de441094434bb4d9f014e3863074 [2021-10-29 00:05:19,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:05:19,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-29 00:05:19,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:19,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:05:19,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:05:19,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6823c085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19, skipping insertion in model container [2021-10-29 00:05:19,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:05:19,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:05:19,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:19,683 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 00:05:19,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:05:19,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:19,749 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:05:19,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:19,874 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:05:19,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19 WrapperNode [2021-10-29 00:05:19,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:19,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:05:19,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:05:19,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:05:19,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:05:19,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:05:19,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:05:19,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:05:19,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (1/1) ... [2021-10-29 00:05:19,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:19,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:20,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:20,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:05:20,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-29 00:05:20,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:05:20,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-29 00:05:20,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-29 00:05:20,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-29 00:05:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-29 00:05:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-29 00:05:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-29 00:05:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-29 00:05:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-10-29 00:05:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-10-29 00:05:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sub [2021-10-29 00:05:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_top [2021-10-29 00:05:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_sub [2021-10-29 00:05:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2021-10-29 00:05:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_top [2021-10-29 00:05:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure create_top [2021-10-29 00:05:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-29 00:05:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-29 00:05:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-29 00:05:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-29 00:05:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-29 00:05:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-29 00:05:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:05:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-29 00:05:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-29 00:05:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-29 00:05:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-29 00:05:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-29 00:05:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-29 00:05:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-29 00:05:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-29 00:05:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-29 00:05:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-29 00:05:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-29 00:05:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-29 00:05:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-29 00:05:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-29 00:05:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-29 00:05:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-29 00:05:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-29 00:05:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-29 00:05:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-29 00:05:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-29 00:05:20,102 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-29 00:05:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-29 00:05:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-29 00:05:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-29 00:05:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-29 00:05:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-29 00:05:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-29 00:05:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-29 00:05:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-29 00:05:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-29 00:05:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-29 00:05:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-29 00:05:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-29 00:05:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-29 00:05:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-29 00:05:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-29 00:05:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-29 00:05:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-29 00:05:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-29 00:05:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-29 00:05:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-29 00:05:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-29 00:05:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-29 00:05:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-29 00:05:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-29 00:05:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-29 00:05:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-29 00:05:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-29 00:05:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-29 00:05:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-29 00:05:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-29 00:05:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-29 00:05:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-29 00:05:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-29 00:05:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-29 00:05:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-29 00:05:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-29 00:05:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-29 00:05:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-29 00:05:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-29 00:05:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-29 00:05:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-29 00:05:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-29 00:05:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-29 00:05:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-29 00:05:20,132 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-29 00:05:20,132 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-29 00:05:20,132 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-29 00:05:20,132 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-29 00:05:20,132 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-29 00:05:20,132 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-29 00:05:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-29 00:05:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-10-29 00:05:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 00:05:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-10-29 00:05:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 00:05:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sub [2021-10-29 00:05:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 00:05:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_top [2021-10-29 00:05:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure insert_sub [2021-10-29 00:05:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 00:05:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 00:05:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2021-10-29 00:05:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure insert_top [2021-10-29 00:05:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure create_top [2021-10-29 00:05:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-29 00:05:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 00:05:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-29 00:05:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 00:05:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:05:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-29 00:05:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-29 00:05:20,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-29 00:05:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 00:05:21,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:05:21,167 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 00:05:21,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:21 BoogieIcfgContainer [2021-10-29 00:05:21,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:05:21,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:05:21,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:05:21,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:05:21,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:05:19" (1/3) ... [2021-10-29 00:05:21,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab739fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:21, skipping insertion in model container [2021-10-29 00:05:21,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:19" (2/3) ... [2021-10-29 00:05:21,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab739fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:21, skipping insertion in model container [2021-10-29 00:05:21,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:21" (3/3) ... [2021-10-29 00:05:21,180 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2021-10-29 00:05:21,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:05:21,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-10-29 00:05:21,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:05:21,253 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 00:05:21,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-10-29 00:05:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 82 states have internal predecessors, (92), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-29 00:05:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 00:05:21,284 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:21,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:21,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:21,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:21,293 INFO L85 PathProgramCache]: Analyzing trace with hash -901593530, now seen corresponding path program 1 times [2021-10-29 00:05:21,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:21,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108375007] [2021-10-29 00:05:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:21,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:21,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:21,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:21,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 00:05:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:21,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 00:05:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:21,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:21,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:21,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108375007] [2021-10-29 00:05:21,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108375007] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:21,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:21,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 00:05:21,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675501722] [2021-10-29 00:05:21,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:05:21,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:05:21,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:21,795 INFO L87 Difference]: Start difference. First operand has 106 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 82 states have internal predecessors, (92), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:21,833 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2021-10-29 00:05:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:05:21,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-29 00:05:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:21,848 INFO L225 Difference]: With dead ends: 106 [2021-10-29 00:05:21,848 INFO L226 Difference]: Without dead ends: 103 [2021-10-29 00:05:21,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-29 00:05:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-29 00:05:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 50 states have (on average 1.68) internal successors, (84), 80 states have internal predecessors, (84), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-29 00:05:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-10-29 00:05:21,907 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 14 [2021-10-29 00:05:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:21,907 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-10-29 00:05:21,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-10-29 00:05:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 00:05:21,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:21,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:21,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:22,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:22,123 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash -901533948, now seen corresponding path program 1 times [2021-10-29 00:05:22,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:22,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916725216] [2021-10-29 00:05:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:22,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:22,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:22,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 00:05:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:22,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:05:22,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:22,472 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 [2021-10-29 00:05:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:22,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:22,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:22,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916725216] [2021-10-29 00:05:22,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916725216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:22,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:22,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 00:05:22,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522814876] [2021-10-29 00:05:22,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:05:22,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:22,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:22,656 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:23,029 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-10-29 00:05:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:23,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-29 00:05:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:23,033 INFO L225 Difference]: With dead ends: 109 [2021-10-29 00:05:23,034 INFO L226 Difference]: Without dead ends: 109 [2021-10-29 00:05:23,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-29 00:05:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2021-10-29 00:05:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 52 states have (on average 1.6538461538461537) internal successors, (86), 80 states have internal predecessors, (86), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-29 00:05:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2021-10-29 00:05:23,062 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 14 [2021-10-29 00:05:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:23,063 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2021-10-29 00:05:23,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2021-10-29 00:05:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 00:05:23,065 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:23,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:23,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:23,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:23,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:23,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash -901533947, now seen corresponding path program 1 times [2021-10-29 00:05:23,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:23,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80176609] [2021-10-29 00:05:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:23,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:23,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:23,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 00:05:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:23,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:05:23,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:23,552 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 [2021-10-29 00:05:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:23,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:23,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:23,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80176609] [2021-10-29 00:05:23,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80176609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:23,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:23,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 00:05:23,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590314979] [2021-10-29 00:05:23,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:05:23,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:23,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:05:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:05:23,981 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-10-29 00:05:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:24,830 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2021-10-29 00:05:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:24,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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 14 [2021-10-29 00:05:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:24,834 INFO L225 Difference]: With dead ends: 107 [2021-10-29 00:05:24,834 INFO L226 Difference]: Without dead ends: 107 [2021-10-29 00:05:24,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:05:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-29 00:05:24,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-10-29 00:05:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 81 states have internal predecessors, (86), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-29 00:05:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-10-29 00:05:24,849 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 14 [2021-10-29 00:05:24,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:24,850 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-10-29 00:05:24,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-10-29 00:05:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-10-29 00:05:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:05:24,852 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:24,852 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:24,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:25,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:25,066 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting insert_subErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:25,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -732602635, now seen corresponding path program 1 times [2021-10-29 00:05:25,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:25,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847482172] [2021-10-29 00:05:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:25,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:25,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:25,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:25,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 00:05:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:25,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:25,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:25,340 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 [2021-10-29 00:05:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:25,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:25,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:25,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847482172] [2021-10-29 00:05:25,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847482172] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:25,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:25,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 00:05:25,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391676288] [2021-10-29 00:05:25,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:05:25,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:25,419 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:25,551 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-10-29 00:05:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 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 [2021-10-29 00:05:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:25,553 INFO L225 Difference]: With dead ends: 104 [2021-10-29 00:05:25,553 INFO L226 Difference]: Without dead ends: 104 [2021-10-29 00:05:25,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-29 00:05:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-29 00:05:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 80 states have internal predecessors, (85), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-29 00:05:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2021-10-29 00:05:25,565 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 19 [2021-10-29 00:05:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:25,566 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2021-10-29 00:05:25,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2021-10-29 00:05:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:05:25,567 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:25,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:25,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:25,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:25,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting insert_subErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:25,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash -732602634, now seen corresponding path program 1 times [2021-10-29 00:05:25,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:25,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582936939] [2021-10-29 00:05:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:25,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:25,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:25,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:25,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 00:05:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:26,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 00:05:26,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:26,115 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 [2021-10-29 00:05:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:26,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:26,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:26,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582936939] [2021-10-29 00:05:26,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582936939] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:26,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:26,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 00:05:26,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481973107] [2021-10-29 00:05:26,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:05:26,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:05:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:05:26,282 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:26,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:26,592 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-10-29 00:05:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 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 [2021-10-29 00:05:26,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:26,596 INFO L225 Difference]: With dead ends: 103 [2021-10-29 00:05:26,596 INFO L226 Difference]: Without dead ends: 103 [2021-10-29 00:05:26,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:05:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-29 00:05:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-29 00:05:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 79 states have internal predecessors, (84), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-29 00:05:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-10-29 00:05:26,620 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 19 [2021-10-29 00:05:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:26,622 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-10-29 00:05:26,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:26,624 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-10-29 00:05:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 00:05:26,625 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:26,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:26,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:26,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:26,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:26,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2058851786, now seen corresponding path program 1 times [2021-10-29 00:05:26,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:26,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582685578] [2021-10-29 00:05:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:26,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:26,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:26,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:26,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 00:05:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:27,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 00:05:27,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:27,190 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 [2021-10-29 00:05:27,315 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 00:05:27,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2021-10-29 00:05:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:27,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:27,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:27,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582685578] [2021-10-29 00:05:27,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582685578] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:27,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:27,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-10-29 00:05:27,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703583654] [2021-10-29 00:05:27,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 00:05:27,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 00:05:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:05:27,779 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 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) [2021-10-29 00:05:28,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:28,699 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2021-10-29 00:05:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 00:05:28,700 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 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 22 [2021-10-29 00:05:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:28,702 INFO L225 Difference]: With dead ends: 111 [2021-10-29 00:05:28,702 INFO L226 Difference]: Without dead ends: 111 [2021-10-29 00:05:28,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-29 00:05:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-29 00:05:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-29 00:05:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 57 states have (on average 1.5614035087719298) internal successors, (89), 83 states have internal predecessors, (89), 14 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-29 00:05:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2021-10-29 00:05:28,712 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 22 [2021-10-29 00:05:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:28,713 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2021-10-29 00:05:28,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 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) [2021-10-29 00:05:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2021-10-29 00:05:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 00:05:28,715 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:28,715 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:28,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:28,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:28,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2058851787, now seen corresponding path program 1 times [2021-10-29 00:05:28,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:28,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026553308] [2021-10-29 00:05:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:28,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:28,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:28,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:28,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 00:05:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:29,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-29 00:05:29,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:29,300 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 [2021-10-29 00:05:29,311 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 [2021-10-29 00:05:29,555 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 00:05:29,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-10-29 00:05:29,564 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:05:29,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-10-29 00:05:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:29,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:31,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:31,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026553308] [2021-10-29 00:05:31,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026553308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:31,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:31,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-29 00:05:31,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440154212] [2021-10-29 00:05:31,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-29 00:05:31,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-29 00:05:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-29 00:05:31,781 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:40,464 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2021-10-29 00:05:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 00:05:40,465 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-29 00:05:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:40,467 INFO L225 Difference]: With dead ends: 126 [2021-10-29 00:05:40,467 INFO L226 Difference]: Without dead ends: 126 [2021-10-29 00:05:40,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=64, Invalid=355, Unknown=1, NotChecked=0, Total=420 [2021-10-29 00:05:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-29 00:05:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2021-10-29 00:05:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 94 states have internal predecessors, (99), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-29 00:05:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2021-10-29 00:05:40,478 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 22 [2021-10-29 00:05:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:40,479 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2021-10-29 00:05:40,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2021-10-29 00:05:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 00:05:40,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:40,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:40,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:40,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:40,693 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1174239143, now seen corresponding path program 1 times [2021-10-29 00:05:40,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:40,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865140464] [2021-10-29 00:05:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:40,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:40,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:40,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 00:05:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:41,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:41,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:41,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:41,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:41,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865140464] [2021-10-29 00:05:41,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865140464] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:41,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:41,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 00:05:41,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423655012] [2021-10-29 00:05:41,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:05:41,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:41,282 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:41,658 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2021-10-29 00:05:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:05:41,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 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 25 [2021-10-29 00:05:41,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:41,660 INFO L225 Difference]: With dead ends: 124 [2021-10-29 00:05:41,660 INFO L226 Difference]: Without dead ends: 124 [2021-10-29 00:05:41,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-29 00:05:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-29 00:05:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 67 states have (on average 1.462686567164179) internal successors, (98), 93 states have internal predecessors, (98), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-29 00:05:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-10-29 00:05:41,666 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 25 [2021-10-29 00:05:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:41,666 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-10-29 00:05:41,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-10-29 00:05:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 00:05:41,667 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:41,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:41,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:41,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:41,867 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1174239142, now seen corresponding path program 1 times [2021-10-29 00:05:41,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:41,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088935484] [2021-10-29 00:05:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:41,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:41,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:41,870 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:41,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 00:05:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:42,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 00:05:42,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:42,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:42,946 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 [2021-10-29 00:05:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:43,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:43,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088935484] [2021-10-29 00:05:43,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088935484] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:43,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:43,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2021-10-29 00:05:43,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368775729] [2021-10-29 00:05:43,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-29 00:05:43,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-29 00:05:43,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2021-10-29 00:05:43,709 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:46,359 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-10-29 00:05:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-29 00:05:46,361 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-10-29 00:05:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:46,362 INFO L225 Difference]: With dead ends: 136 [2021-10-29 00:05:46,362 INFO L226 Difference]: Without dead ends: 136 [2021-10-29 00:05:46,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2021-10-29 00:05:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-29 00:05:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2021-10-29 00:05:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 98 states have internal predecessors, (109), 17 states have call successors, (17), 15 states have call predecessors, (17), 14 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-29 00:05:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-10-29 00:05:46,371 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 25 [2021-10-29 00:05:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:46,372 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-10-29 00:05:46,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-10-29 00:05:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 00:05:46,374 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:46,374 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:46,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:46,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:46,585 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr2REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:46,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2041674979, now seen corresponding path program 1 times [2021-10-29 00:05:46,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:46,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744084463] [2021-10-29 00:05:46,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:46,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:46,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 00:05:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:46,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:05:46,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:46,949 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 [2021-10-29 00:05:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:47,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:47,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:47,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744084463] [2021-10-29 00:05:47,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744084463] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:47,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:47,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-29 00:05:47,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096925033] [2021-10-29 00:05:47,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:47,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:47,211 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:47,754 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-29 00:05:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:47,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 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 26 [2021-10-29 00:05:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:47,758 INFO L225 Difference]: With dead ends: 140 [2021-10-29 00:05:47,758 INFO L226 Difference]: Without dead ends: 140 [2021-10-29 00:05:47,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:05:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-29 00:05:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2021-10-29 00:05:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 103 states have internal predecessors, (116), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-29 00:05:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-10-29 00:05:47,766 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 26 [2021-10-29 00:05:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:47,767 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-10-29 00:05:47,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-10-29 00:05:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 00:05:47,768 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:47,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:47,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:47,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:47,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr3REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:47,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2041674978, now seen corresponding path program 1 times [2021-10-29 00:05:47,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:47,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272202352] [2021-10-29 00:05:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:47,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:47,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:47,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:47,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 00:05:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:48,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:05:48,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:48,384 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 [2021-10-29 00:05:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:48,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:49,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:49,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272202352] [2021-10-29 00:05:49,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272202352] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:49,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:49,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 00:05:49,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962043983] [2021-10-29 00:05:49,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 00:05:49,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 00:05:49,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:05:49,281 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:50,754 INFO L93 Difference]: Finished difference Result 138 states and 145 transitions. [2021-10-29 00:05:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:50,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-29 00:05:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:50,758 INFO L225 Difference]: With dead ends: 138 [2021-10-29 00:05:50,758 INFO L226 Difference]: Without dead ends: 138 [2021-10-29 00:05:50,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:05:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-29 00:05:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2021-10-29 00:05:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 103 states have internal predecessors, (112), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-29 00:05:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2021-10-29 00:05:50,767 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 26 [2021-10-29 00:05:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:50,767 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2021-10-29 00:05:50,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:05:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2021-10-29 00:05:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 00:05:50,769 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:50,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:50,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-29 00:05:50,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:50,984 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __list_addErr6REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:05:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 750402304, now seen corresponding path program 1 times [2021-10-29 00:05:50,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:50,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236113029] [2021-10-29 00:05:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:50,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:50,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:50,987 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:51,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 00:05:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:51,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-29 00:05:51,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:51,452 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 [2021-10-29 00:05:51,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 00:05:51,623 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-29 00:05:51,623 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 [2021-10-29 00:05:51,793 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 00:05:51,793 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 19 treesize of output 19 [2021-10-29 00:05:52,085 INFO L354 Elim1Store]: treesize reduction 562, result has 2.9 percent of original size [2021-10-29 00:05:52,086 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 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 27 [2021-10-29 00:05:52,313 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 00:05:52,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 20 [2021-10-29 00:05:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:52,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:52,613 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-10-29 00:05:52,614 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 [2021-10-29 00:06:02,469 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))) (= |c_insert_sub_#in~head.base| (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) |c_insert_sub_#in~head.base|) (bvadd (_ bv4 32) |c_insert_sub_#in~head.offset|))))) is different from false [2021-10-29 00:06:04,554 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= c_create_sub_list_~sub.base (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))))) is different from false [2021-10-29 00:06:06,644 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse0 v_insert_sub_~sub~0.base_16 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)) c_create_sub_list_~sub.base))) is different from false [2021-10-29 00:06:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:09,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:06:09,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236113029] [2021-10-29 00:06:09,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236113029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:06:09,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:06:09,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 21 [2021-10-29 00:06:09,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104376637] [2021-10-29 00:06:09,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-29 00:06:09,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:06:09,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-29 00:06:09,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=298, Unknown=5, NotChecked=108, Total=462 [2021-10-29 00:06:09,577 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:06:11,847 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse0 v_insert_sub_~sub~0.base_16 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)) c_create_sub_list_~sub.base))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_create_sub_list_#in~sub.base|)) (_ bv1 1))) (= c_create_sub_list_~sub.base (select (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_create_sub_list_~sub.base)) (_ bv1 1)))) is different from false [2021-10-29 00:06:27,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:27,457 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2021-10-29 00:06:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-29 00:06:27,458 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-29 00:06:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:27,460 INFO L225 Difference]: With dead ends: 169 [2021-10-29 00:06:27,461 INFO L226 Difference]: Without dead ends: 169 [2021-10-29 00:06:27,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=82, Invalid=480, Unknown=6, NotChecked=188, Total=756 [2021-10-29 00:06:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-29 00:06:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2021-10-29 00:06:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 127 states have internal predecessors, (136), 23 states have call successors, (23), 22 states have call predecessors, (23), 17 states have return successors, (22), 16 states have call predecessors, (22), 22 states have call successors, (22) [2021-10-29 00:06:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2021-10-29 00:06:27,472 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 28 [2021-10-29 00:06:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:27,473 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2021-10-29 00:06:27,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 00:06:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2021-10-29 00:06:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 00:06:27,475 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:27,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:27,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:27,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:06:27,697 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __list_addErr7REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-29 00:06:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash 750402305, now seen corresponding path program 1 times [2021-10-29 00:06:27,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:06:27,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244011322] [2021-10-29 00:06:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:27,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:06:27,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:06:27,699 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:06:27,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 00:06:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:06:28,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-29 00:06:28,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:28,215 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 [2021-10-29 00:06:28,225 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 [2021-10-29 00:06:28,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 00:06:28,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 00:06:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:28,475 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 [2021-10-29 00:06:28,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:28,493 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 [2021-10-29 00:06:28,766 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 00:06:28,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-10-29 00:06:28,824 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 00:06:28,824 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 20 treesize of output 20 [2021-10-29 00:06:29,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:29,336 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-29 00:06:29,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 92 [2021-10-29 00:06:29,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:29,488 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-29 00:06:29,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 44 [2021-10-29 00:06:29,952 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:29,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-10-29 00:06:29,961 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:29,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-10-29 00:06:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:30,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:06:45,967 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_17 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_17))))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) |c_insert_sub_#in~head.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_insert_sub_#in~head.base|) .cse3)) (select (store |c_#length| v_insert_sub_~sub~0.base_17 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_insert_sub_#in~head.base|) .cse3))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_12)) |c_insert_sub_#in~head.base|) (bvadd (_ bv4 32) |c_insert_sub_#in~head.offset|)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))))) is different from false [2021-10-29 00:06:48,220 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_17 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_12)) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse4 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) c_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_insert_sub_~sub~0.base_17 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) c_create_sub_list_~sub.base) .cse4)))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_17))))))) is different from false [2021-10-29 00:06:50,579 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_17 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse4 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse0 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12))) c_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_insert_sub_~sub~0.base_17 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse5 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse5 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8))) c_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse7 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse7 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_12))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_17))))))) is different from false [2021-10-29 00:06:55,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:06:55,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244011322] [2021-10-29 00:06:55,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 00:06:55,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1091570299] [2021-10-29 00:06:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:55,787 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 00:06:55,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-29 00:06:55,790 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 00:06:55,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-29 00:06:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:06:56,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-29 00:06:56,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:56,604 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 [2021-10-29 00:06:56,614 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 [2021-10-29 00:06:56,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 00:06:56,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 00:06:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:56,741 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 [2021-10-29 00:06:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:56,761 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 [2021-10-29 00:06:56,910 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 00:06:56,911 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 16 [2021-10-29 00:06:56,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-10-29 00:06:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:57,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:57,057 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-10-29 00:06:57,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 87 [2021-10-29 00:06:57,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:57,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:57,076 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-10-29 00:06:57,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 39 [2021-10-29 00:06:57,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 00:06:57,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 00:06:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:57,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:07:29,884 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_18 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse0 v_DerPreprocessor_18) .cse1 v_DerPreprocessor_19) .cse2 v_DerPreprocessor_20)) c_create_sub_list_~sub.base) .cse3)) (select (store |c_#length| v_insert_sub_~sub~0.base_18 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse0 v_DerPreprocessor_14) .cse1 v_DerPreprocessor_15) .cse2 v_DerPreprocessor_16)) c_create_sub_list_~sub.base) .cse3))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20)) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_18)))))) is different from false [2021-10-29 00:07:32,225 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_18 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse4 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse0 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20))) c_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_insert_sub_~sub~0.base_18 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse5 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse5 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse1 v_DerPreprocessor_14) .cse2 v_DerPreprocessor_15) .cse3 v_DerPreprocessor_16))) c_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse7 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse7 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_18)))))) is different from false [2021-10-29 00:07:38,702 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 2104 [2021-10-29 00:07:38,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 00:07:38,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255362022] [2021-10-29 00:07:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:07:38,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:07:38,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:07:38,729 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:07:38,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-29 00:07:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:07:39,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-29 00:07:39,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:07:39,278 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 [2021-10-29 00:07:39,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 00:07:39,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 00:07:39,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:39,811 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 [2021-10-29 00:07:39,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:39,826 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 [2021-10-29 00:07:39,952 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 00:07:39,952 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 17 treesize of output 17 [2021-10-29 00:07:39,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-10-29 00:07:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:40,265 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-29 00:07:40,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 92 [2021-10-29 00:07:40,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:40,408 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-29 00:07:40,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 44 [2021-10-29 00:07:40,644 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:07:40,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-10-29 00:07:40,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:07:40,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-10-29 00:07:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:07:40,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:09:11,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:09:11,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:09:12,375 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-29 00:09:12,376 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 75596 treesize of output 75595 [2021-10-29 00:09:13,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 00:09:13,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:09:13,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 00:09:13,053 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-29 00:09:13,053 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 00:09:13,061 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION [2021-10-29 00:09:13,063 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_subErr0REQUIRES_VIOLATION [2021-10-29 00:09:13,064 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_subErr1REQUIRES_VIOLATION [2021-10-29 00:09:13,064 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr0REQUIRES_VIOLATION [2021-10-29 00:09:13,064 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr1REQUIRES_VIOLATION [2021-10-29 00:09:13,064 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr0REQUIRES_VIOLATION [2021-10-29 00:09:13,065 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr1REQUIRES_VIOLATION [2021-10-29 00:09:13,065 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr2REQUIRES_VIOLATION [2021-10-29 00:09:13,065 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr3REQUIRES_VIOLATION [2021-10-29 00:09:13,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:09:13,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:09:13,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:09:13,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION [2021-10-29 00:09:13,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION [2021-10-29 00:09:13,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION [2021-10-29 00:09:13,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION [2021-10-29 00:09:13,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION [2021-10-29 00:09:13,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION [2021-10-29 00:09:13,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION [2021-10-29 00:09:13,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr0REQUIRES_VIOLATION [2021-10-29 00:09:13,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr1REQUIRES_VIOLATION [2021-10-29 00:09:13,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr2REQUIRES_VIOLATION [2021-10-29 00:09:13,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr3REQUIRES_VIOLATION [2021-10-29 00:09:13,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-29 00:09:13,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr0REQUIRES_VIOLATION [2021-10-29 00:09:13,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr1REQUIRES_VIOLATION [2021-10-29 00:09:13,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr2REQUIRES_VIOLATION [2021-10-29 00:09:13,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr3REQUIRES_VIOLATION [2021-10-29 00:09:13,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:09:13,070 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:09:13,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:09:13,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 00:09:13,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-29 00:09:13,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-29 00:09:13,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:09:13,691 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:09:13,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:09:13,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:09:13 BoogieIcfgContainer [2021-10-29 00:09:13,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:09:13,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:09:13,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:09:13,706 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:09:13,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:21" (3/4) ... [2021-10-29 00:09:13,712 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 00:09:13,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:09:13,714 INFO L168 Benchmark]: Toolchain (without parser) took 234689.38 ms. Allocated memory was 62.9 MB in the beginning and 444.6 MB in the end (delta: 381.7 MB). Free memory was 40.6 MB in the beginning and 347.5 MB in the end (delta: -306.8 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.1 GB. [2021-10-29 00:09:13,714 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:09:13,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.47 ms. Allocated memory is still 62.9 MB. Free memory was 40.5 MB in the beginning and 35.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-29 00:09:13,715 INFO L168 Benchmark]: Boogie Preprocessor took 96.40 ms. Allocated memory is still 62.9 MB. Free memory was 35.9 MB in the beginning and 32.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 00:09:13,716 INFO L168 Benchmark]: RCFGBuilder took 1196.85 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.5 MB in the beginning and 49.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 00:09:13,717 INFO L168 Benchmark]: TraceAbstraction took 232533.27 ms. Allocated memory was 75.5 MB in the beginning and 444.6 MB in the end (delta: 369.1 MB). Free memory was 48.6 MB in the beginning and 347.5 MB in the end (delta: -298.9 MB). Peak memory consumption was 272.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:09:13,717 INFO L168 Benchmark]: Witness Printer took 7.01 ms. Allocated memory is still 444.6 MB. Free memory is still 347.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:09:13,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 847.47 ms. Allocated memory is still 62.9 MB. Free memory was 40.5 MB in the beginning and 35.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.40 ms. Allocated memory is still 62.9 MB. Free memory was 35.9 MB in the beginning and 32.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1196.85 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.5 MB in the beginning and 49.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 232533.27 ms. Allocated memory was 75.5 MB in the beginning and 444.6 MB in the end (delta: 369.1 MB). Free memory was 48.6 MB in the beginning and 347.5 MB in the end (delta: -298.9 MB). Peak memory consumption was 272.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.01 ms. Allocated memory is still 444.6 MB. Free memory is still 347.5 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 534]: 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: [L602] struct list_head top = { &(top), &(top) }; [L603] CALL create_top(&top) [L597] CALL insert_top(top) [L587] struct top_list *top = malloc(sizeof(*top)); [L588] COND FALSE !(!top) [L590] CALL create_sub_list(&top->sub1) [L579] sub->prev = sub [L580] sub->next = sub [L582] CALL insert_sub(sub) [L571] struct sub_list *sub = malloc(sizeof(*sub)); [L572] COND FALSE !(!sub) [L574] sub->number = 0 [L575] CALL list_add_tail(&sub->link, head) [L538] EXPR head->prev [L538] CALL __list_add(new, head->prev, head) [L531] next->prev = new [L532] new->next = next [L533] new->prev = prev [L534] prev->next = new - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 130 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 232.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1168 SDtfs, 339 SDslu, 4709 SDs, 0 SdLazy, 2625 SolverSat, 78 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 385 SyntacticMatches, 21 SemanticMatches, 125 ConstructedPredicates, 4 IntricatePredicates, 3 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 38.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=12, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 25 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 53.4s InterpolantComputationTime, 282 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 511 ConstructedInterpolants, 31 QuantifiedInterpolants, 3198 SizeOfPredicates, 81 NumberOfNonLiveVariables, 2148 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 [2021-10-29 00:09:13,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07bff65-a937-4da7-ac92-dfa18c596934/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...