./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list-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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:07:15,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:07:15,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:07:15,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:07:15,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:07:15,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:07:15,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:07:15,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:07:15,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:07:15,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:07:15,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:07:15,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:07:15,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:07:15,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:07:15,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:07:15,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:07:15,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:07:15,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:07:15,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:07:15,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:07:15,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:07:15,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:07:15,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:07:15,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:07:15,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:07:15,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:07:15,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:07:15,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:07:15,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:07:15,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:07:15,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:07:15,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:07:15,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:07:15,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:07:15,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:07:15,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:07:15,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:07:15,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:07:15,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:07:15,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:07:15,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:07:15,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:07:15,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:07:15,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:07:15,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:07:15,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:07:15,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:07:15,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:07:15,414 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:07:15,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:07:15,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:07:15,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:07:15,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:07:15,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:07:15,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:07:15,417 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:07:15,418 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:07:15,418 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:07:15,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:07:15,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:07:15,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:07:15,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:07:15,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:07:15,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:07:15,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:07:15,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:07:15,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:07:15,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:07:15,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:07:15,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:07:15,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:07:15,424 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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2021-10-28 23:07:15,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:07:15,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:07:15,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:07:15,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:07:15,792 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:07:15,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/list-1.i [2021-10-28 23:07:15,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/0b620ee58/3f69d737055f4e9f90b753866e9512d7/FLAG557b93265 [2021-10-28 23:07:16,509 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:07:16,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/sv-benchmarks/c/list-properties/list-1.i [2021-10-28 23:07:16,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/0b620ee58/3f69d737055f4e9f90b753866e9512d7/FLAG557b93265 [2021-10-28 23:07:16,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/0b620ee58/3f69d737055f4e9f90b753866e9512d7 [2021-10-28 23:07:16,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:07:16,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:07:16,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:07:16,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:07:16,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:07:16,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:07:16" (1/1) ... [2021-10-28 23:07:16,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7168f468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:16, skipping insertion in model container [2021-10-28 23:07:16,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:07:16" (1/1) ... [2021-10-28 23:07:16,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:07:16,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:07:17,317 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-10-28 23:07:17,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:07:17,335 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:07:17,404 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-10-28 23:07:17,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:07:17,445 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:07:17,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17 WrapperNode [2021-10-28 23:07:17,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:07:17,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:07:17,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:07:17,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:07:17,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:07:17,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:07:17,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:07:17,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:07:17,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (1/1) ... [2021-10-28 23:07:17,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:07:17,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:07:17,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:07:17,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:07:17,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:07:17,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:07:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:07:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:07:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:07:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:07:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:07:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:07:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:07:17,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:07:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:07:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:07:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:07:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:07:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:07:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:07:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:07:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:07:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:07:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:07:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:07:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:07:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:07:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:07:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:07:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:07:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:07:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:07:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:07:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:07:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:07:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:07:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:07:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:07:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:07:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:07:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:07:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:07:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:07:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:07:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:07:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:07:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:07:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:07:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:07:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:07:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:07:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:07:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:07:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:07:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:07:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:07:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:07:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:07:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:07:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:07:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:07:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:07:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:07:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:07:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:07:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:07:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:07:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:07:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:07:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:07:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:07:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:07:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:07:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:07:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:07:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:07:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:07:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:07:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:07:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:07:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:07:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:07:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:07:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:07:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:07:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:07:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:07:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:07:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:07:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:07:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:07:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:07:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:07:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:07:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:07:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:07:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:07:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:07:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:07:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:07:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:07:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:07:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:07:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:07:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:07:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:07:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:07:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:07:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:07:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:07:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:07:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:07:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:07:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:07:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:07:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:07:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:07:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:07:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:07:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:07:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:07:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:07:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:07:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:07:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:07:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:07:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:07:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:07:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:07:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:07:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:07:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:07:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:07:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:07:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:07:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:07:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:07:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:07:18,093 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:07:18,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:07:18,353 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:07:18,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:07:18 BoogieIcfgContainer [2021-10-28 23:07:18,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:07:18,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:07:18,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:07:18,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:07:18,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:07:16" (1/3) ... [2021-10-28 23:07:18,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0ecf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:07:18, skipping insertion in model container [2021-10-28 23:07:18,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:17" (2/3) ... [2021-10-28 23:07:18,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0ecf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:07:18, skipping insertion in model container [2021-10-28 23:07:18,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:07:18" (3/3) ... [2021-10-28 23:07:18,367 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2021-10-28 23:07:18,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:07:18,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-28 23:07:18,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:07:18,435 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 [2021-10-28 23:07:18,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-10-28 23:07:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:07:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:07:18,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:18,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:18,472 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash 85898829, now seen corresponding path program 1 times [2021-10-28 23:07:18,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:18,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147516621] [2021-10-28 23:07:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:18,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:18,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:18,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147516621] [2021-10-28 23:07:18,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147516621] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:18,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:18,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:07:18,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004046123] [2021-10-28 23:07:18,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:07:18,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:07:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:07:18,822 INFO L87 Difference]: Start difference. First operand has 73 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:19,107 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-10-28 23:07:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:07:19,111 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:07:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:19,122 INFO L225 Difference]: With dead ends: 80 [2021-10-28 23:07:19,122 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 23:07:19,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:07:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 23:07:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2021-10-28 23:07:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 63 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2021-10-28 23:07:19,177 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 11 [2021-10-28 23:07:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:19,177 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2021-10-28 23:07:19,178 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2021-10-28 23:07:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:07:19,179 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:19,179 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:19,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:07:19,180 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash 85898830, now seen corresponding path program 1 times [2021-10-28 23:07:19,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:19,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969141358] [2021-10-28 23:07:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:19,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:19,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:19,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969141358] [2021-10-28 23:07:19,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969141358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:19,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:19,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:07:19,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252875308] [2021-10-28 23:07:19,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:07:19,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:07:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:07:19,353 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:19,597 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-10-28 23:07:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:07:19,598 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:07:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:19,601 INFO L225 Difference]: With dead ends: 92 [2021-10-28 23:07:19,601 INFO L226 Difference]: Without dead ends: 92 [2021-10-28 23:07:19,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:07:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-28 23:07:19,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2021-10-28 23:07:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 77 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2021-10-28 23:07:19,614 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 11 [2021-10-28 23:07:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:19,615 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2021-10-28 23:07:19,615 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2021-10-28 23:07:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:07:19,616 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:19,617 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:19,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:07:19,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1250386406, now seen corresponding path program 1 times [2021-10-28 23:07:19,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:19,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134564513] [2021-10-28 23:07:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:19,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:19,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:19,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134564513] [2021-10-28 23:07:19,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134564513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:19,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:19,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:07:19,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959874729] [2021-10-28 23:07:19,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:07:19,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:07:19,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:07:19,776 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:20,059 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2021-10-28 23:07:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:07:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:07:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:20,065 INFO L225 Difference]: With dead ends: 120 [2021-10-28 23:07:20,065 INFO L226 Difference]: Without dead ends: 120 [2021-10-28 23:07:20,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:07:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-28 23:07:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 84. [2021-10-28 23:07:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.435483870967742) internal successors, (89), 80 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2021-10-28 23:07:20,089 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 19 [2021-10-28 23:07:20,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:20,090 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2021-10-28 23:07:20,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2021-10-28 23:07:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:07:20,091 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:20,092 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:20,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:07:20,092 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash 13452608, now seen corresponding path program 1 times [2021-10-28 23:07:20,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:20,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201939574] [2021-10-28 23:07:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:20,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:20,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:20,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201939574] [2021-10-28 23:07:20,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201939574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:20,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:20,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:07:20,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268370729] [2021-10-28 23:07:20,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:07:20,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:07:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:07:20,256 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:20,553 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2021-10-28 23:07:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:07:20,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:07:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:20,556 INFO L225 Difference]: With dead ends: 109 [2021-10-28 23:07:20,556 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 23:07:20,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:07:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 23:07:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2021-10-28 23:07:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 83 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2021-10-28 23:07:20,583 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 19 [2021-10-28 23:07:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:20,583 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2021-10-28 23:07:20,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2021-10-28 23:07:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:07:20,585 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:20,585 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:20,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:07:20,585 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash 13452609, now seen corresponding path program 1 times [2021-10-28 23:07:20,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:20,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692816972] [2021-10-28 23:07:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:20,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:20,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:20,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692816972] [2021-10-28 23:07:20,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692816972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:20,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:20,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:07:20,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255570242] [2021-10-28 23:07:20,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:07:20,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:07:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:07:20,713 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:21,144 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-28 23:07:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:07:21,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:07:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:21,146 INFO L225 Difference]: With dead ends: 110 [2021-10-28 23:07:21,146 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 23:07:21,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:07:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 23:07:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 78. [2021-10-28 23:07:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.4) internal successors, (84), 74 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-10-28 23:07:21,152 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 19 [2021-10-28 23:07:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:21,153 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-10-28 23:07:21,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-10-28 23:07:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:07:21,154 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:21,154 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] [2021-10-28 23:07:21,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:07:21,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr24ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:21,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 921876220, now seen corresponding path program 1 times [2021-10-28 23:07:21,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:21,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062251575] [2021-10-28 23:07:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:21,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:21,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:21,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062251575] [2021-10-28 23:07:21,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062251575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:21,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:21,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:07:21,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095544353] [2021-10-28 23:07:21,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:07:21,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:21,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:07:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:07:21,303 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:21,503 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2021-10-28 23:07:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:07:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 23:07:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:21,505 INFO L225 Difference]: With dead ends: 122 [2021-10-28 23:07:21,505 INFO L226 Difference]: Without dead ends: 122 [2021-10-28 23:07:21,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:07:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-28 23:07:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 82. [2021-10-28 23:07:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.390625) internal successors, (89), 78 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2021-10-28 23:07:21,511 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 21 [2021-10-28 23:07:21,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:21,511 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2021-10-28 23:07:21,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2021-10-28 23:07:21,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:07:21,513 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:21,513 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] [2021-10-28 23:07:21,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:07:21,513 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash 921928775, now seen corresponding path program 1 times [2021-10-28 23:07:21,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:21,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257548788] [2021-10-28 23:07:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:21,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:21,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:21,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257548788] [2021-10-28 23:07:21,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257548788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:21,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:21,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:07:21,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403568612] [2021-10-28 23:07:21,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:07:21,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:07:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:07:21,611 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:21,807 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-10-28 23:07:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:07:21,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 23:07:21,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:21,809 INFO L225 Difference]: With dead ends: 105 [2021-10-28 23:07:21,809 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 23:07:21,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:07:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 23:07:21,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 82. [2021-10-28 23:07:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.375) internal successors, (88), 78 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-10-28 23:07:21,814 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2021-10-28 23:07:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:21,814 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-10-28 23:07:21,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-10-28 23:07:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:07:21,815 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:21,815 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:21,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:07:21,816 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:21,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash 626114546, now seen corresponding path program 1 times [2021-10-28 23:07:21,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:21,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686724873] [2021-10-28 23:07:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:21,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:21,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:21,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686724873] [2021-10-28 23:07:21,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686724873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:21,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:21,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:07:21,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556622376] [2021-10-28 23:07:21,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:07:21,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:21,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:07:21,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:07:21,895 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:22,098 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-10-28 23:07:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:07:22,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 23:07:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:22,100 INFO L225 Difference]: With dead ends: 88 [2021-10-28 23:07:22,100 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 23:07:22,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:07:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 23:07:22,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2021-10-28 23:07:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 64 states have (on average 1.34375) internal successors, (86), 76 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-10-28 23:07:22,104 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2021-10-28 23:07:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:22,105 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-10-28 23:07:22,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-10-28 23:07:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:07:22,106 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:22,107 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:22,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:07:22,107 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash 626114547, now seen corresponding path program 1 times [2021-10-28 23:07:22,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:22,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078613501] [2021-10-28 23:07:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:22,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:22,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:22,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078613501] [2021-10-28 23:07:22,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078613501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:22,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:22,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:07:22,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740404587] [2021-10-28 23:07:22,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:07:22,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:07:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:07:22,231 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:22,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:22,492 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2021-10-28 23:07:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:07:22,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 23:07:22,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:22,494 INFO L225 Difference]: With dead ends: 85 [2021-10-28 23:07:22,494 INFO L226 Difference]: Without dead ends: 85 [2021-10-28 23:07:22,495 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:07:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-28 23:07:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2021-10-28 23:07:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 64 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-10-28 23:07:22,498 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2021-10-28 23:07:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:22,498 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-10-28 23:07:22,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-10-28 23:07:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:07:22,499 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:22,499 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] [2021-10-28 23:07:22,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:07:22,500 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr25ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1486603147, now seen corresponding path program 1 times [2021-10-28 23:07:22,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:22,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709034267] [2021-10-28 23:07:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:22,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:07:22,513 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:07:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:07:22,545 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:07:22,545 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:07:22,546 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr25ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:07:22,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:07:22,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:07:22,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:07:22,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:07:22,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:07:22,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:07:22,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:07:22,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:07:22,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:07:22,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:07:22,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:07:22,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:07:22,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:07:22,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:07:22,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:07:22,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:07:22,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:07:22,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:07:22,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:07:22,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:07:22,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:07:22,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:07:22,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:07:22,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:07:22,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:07:22,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:07:22,558 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:22,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:07:22,570 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:07:22,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:07:22 BoogieIcfgContainer [2021-10-28 23:07:22,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:07:22,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:07:22,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:07:22,585 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:07:22,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:07:18" (3/4) ... [2021-10-28 23:07:22,589 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:07:22,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:07:22,591 INFO L168 Benchmark]: Toolchain (without parser) took 5790.76 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 42.9 MB in the beginning and 65.6 MB in the end (delta: -22.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,591 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 81.8 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:07:22,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.56 ms. Allocated memory is still 98.6 MB. Free memory was 78.3 MB in the beginning and 67.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,592 INFO L168 Benchmark]: Boogie Preprocessor took 74.04 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 64.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,593 INFO L168 Benchmark]: RCFGBuilder took 832.01 ms. Allocated memory is still 98.6 MB. Free memory was 64.4 MB in the beginning and 41.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,593 INFO L168 Benchmark]: TraceAbstraction took 4225.25 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 41.1 MB in the beginning and 65.6 MB in the end (delta: -24.5 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,594 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 121.6 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:07:22,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 81.8 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 613.56 ms. Allocated memory is still 98.6 MB. Free memory was 78.3 MB in the beginning and 67.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.04 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 64.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 832.01 ms. Allocated memory is still 98.6 MB. Free memory was 64.4 MB in the beginning and 41.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4225.25 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 41.1 MB in the beginning and 65.6 MB in the end (delta: -24.5 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 121.6 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, p={-1:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 92 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 395 SDtfs, 696 SDslu, 939 SDs, 0 SdLazy, 1788 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=4, InterpolantAutomatonStates: 67, 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, 9 MinimizatonAttempts, 194 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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 [2021-10-28 23:07:22,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:07:25,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:07:25,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:07:25,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:07:25,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:07:25,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:07:25,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:07:25,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:07:25,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:07:25,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:07:25,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:07:25,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:07:25,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:07:25,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:07:25,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:07:25,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:07:25,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:07:25,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:07:25,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:07:25,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:07:25,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:07:25,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:07:25,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:07:25,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:07:25,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:07:25,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:07:25,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:07:25,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:07:25,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:07:25,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:07:25,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:07:25,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:07:25,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:07:25,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:07:25,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:07:25,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:07:25,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:07:25,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:07:25,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:07:25,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:07:25,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:07:25,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:07:25,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:07:25,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:07:25,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:07:25,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:07:25,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:07:25,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:07:25,489 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:07:25,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:07:25,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:07:25,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:07:25,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:07:25,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:07:25,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:07:25,491 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:07:25,492 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:07:25,492 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:07:25,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:07:25,492 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:07:25,492 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:07:25,493 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:07:25,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:07:25,493 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:07:25,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:07:25,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:07:25,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:07:25,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:07:25,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:07:25,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:07:25,495 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:07:25,495 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:07:25,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:07:25,496 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:07:25,496 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_65b8b409-bdf4-414e-b9e5-a538bbadbe76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2021-10-28 23:07:25,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:07:26,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:07:26,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:07:26,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:07:26,022 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:07:26,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/list-1.i [2021-10-28 23:07:26,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/0e7c78737/31a23fccd1b34b088311f5309224d87a/FLAGefbe10818 [2021-10-28 23:07:26,944 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:07:26,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/sv-benchmarks/c/list-properties/list-1.i [2021-10-28 23:07:26,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/0e7c78737/31a23fccd1b34b088311f5309224d87a/FLAGefbe10818 [2021-10-28 23:07:27,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/data/0e7c78737/31a23fccd1b34b088311f5309224d87a [2021-10-28 23:07:27,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:07:27,188 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:07:27,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:07:27,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:07:27,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:07:27,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@872e93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27, skipping insertion in model container [2021-10-28 23:07:27,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:07:27,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:07:27,655 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-10-28 23:07:27,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:07:27,685 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:07:27,781 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-10-28 23:07:27,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:07:27,835 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:07:27,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27 WrapperNode [2021-10-28 23:07:27,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:07:27,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:07:27,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:07:27,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:07:27,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:07:27,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:07:27,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:07:27,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:07:27,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (1/1) ... [2021-10-28 23:07:27,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:07:28,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:07:28,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:07:28,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:07:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:07:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:07:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:07:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:07:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:07:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:07:28,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:07:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:07:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:07:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:07:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:07:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:07:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:07:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:07:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:07:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:07:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:07:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:07:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:07:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:07:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:07:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:07:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:07:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:07:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:07:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:07:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:07:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:07:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:07:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:07:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:07:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:07:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:07:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:07:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:07:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:07:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:07:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:07:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:07:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:07:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:07:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:07:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:07:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:07:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:07:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:07:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:07:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:07:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:07:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:07:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:07:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:07:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:07:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:07:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:07:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:07:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:07:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:07:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:07:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:07:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:07:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:07:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:07:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:07:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:07:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:07:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:07:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:07:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:07:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:07:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:07:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:07:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:07:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:07:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:07:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:07:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:07:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:07:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:07:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:07:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:07:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:07:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:07:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:07:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:07:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:07:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:07:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:07:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:07:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:07:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:07:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:07:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:07:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:07:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:07:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:07:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:07:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:07:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:07:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:07:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:07:28,116 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:07:28,116 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:07:28,116 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:07:28,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:07:28,117 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:07:28,117 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:07:28,117 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:07:28,117 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:07:28,118 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:07:28,118 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:07:28,118 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:07:28,118 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:07:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:07:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:07:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:07:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:07:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:07:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:07:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:07:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:07:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:07:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:07:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:07:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:07:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:07:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:07:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:07:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:07:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:07:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:07:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:07:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:07:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:07:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:07:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:07:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:07:28,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:07:28,541 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:07:28,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:07:28,884 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:07:28,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:07:28 BoogieIcfgContainer [2021-10-28 23:07:28,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:07:28,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:07:28,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:07:28,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:07:28,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:07:27" (1/3) ... [2021-10-28 23:07:28,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6354d76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:07:28, skipping insertion in model container [2021-10-28 23:07:28,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:07:27" (2/3) ... [2021-10-28 23:07:28,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6354d76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:07:28, skipping insertion in model container [2021-10-28 23:07:28,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:07:28" (3/3) ... [2021-10-28 23:07:28,895 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2021-10-28 23:07:28,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:07:28,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-28 23:07:28,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:07:28,953 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 [2021-10-28 23:07:28,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-10-28 23:07:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 37 states have (on average 2.027027027027027) internal successors, (75), 65 states have internal predecessors, (75), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:07:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:07:28,978 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:28,978 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:28,979 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1692035718, now seen corresponding path program 1 times [2021-10-28 23:07:28,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:28,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752341548] [2021-10-28 23:07:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:28,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:28,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:29,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:29,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:07:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:29,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:07:29,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:29,275 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 [2021-10-28 23:07:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:29,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:29,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:29,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752341548] [2021-10-28 23:07:29,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752341548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:29,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:29,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:07:29,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555330111] [2021-10-28 23:07:29,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:07:29,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:29,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:07:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:07:29,447 INFO L87 Difference]: Start difference. First operand has 71 states, 37 states have (on average 2.027027027027027) internal successors, (75), 65 states have internal predecessors, (75), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:29,806 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2021-10-28 23:07:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:07:29,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:07:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:29,816 INFO L225 Difference]: With dead ends: 76 [2021-10-28 23:07:29,816 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 23:07:29,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:07:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 23:07:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2021-10-28 23:07:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 59 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-10-28 23:07:29,866 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 10 [2021-10-28 23:07:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:29,867 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-10-28 23:07:29,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-10-28 23:07:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:07:29,869 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:29,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:29,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:30,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:30,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:30,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1692035717, now seen corresponding path program 1 times [2021-10-28 23:07:30,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:30,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560737703] [2021-10-28 23:07:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:30,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:30,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:30,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:07:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:30,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:07:30,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:30,291 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 [2021-10-28 23:07:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:30,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:30,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:30,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560737703] [2021-10-28 23:07:30,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560737703] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:30,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:30,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:07:30,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134550280] [2021-10-28 23:07:30,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:07:30,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:07:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:07:30,579 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:31,121 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-10-28 23:07:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:07:31,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:07:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:31,125 INFO L225 Difference]: With dead ends: 87 [2021-10-28 23:07:31,125 INFO L226 Difference]: Without dead ends: 87 [2021-10-28 23:07:31,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:07:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-28 23:07:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2021-10-28 23:07:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 54 states have (on average 1.462962962962963) internal successors, (79), 71 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-10-28 23:07:31,137 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 10 [2021-10-28 23:07:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:31,138 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-10-28 23:07:31,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-10-28 23:07:31,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:07:31,139 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:31,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:31,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:31,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:31,353 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1869130219, now seen corresponding path program 1 times [2021-10-28 23:07:31,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:31,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200416725] [2021-10-28 23:07:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:31,356 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:31,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:31,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:31,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:07:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:31,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:07:31,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:31,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:07:31,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 23:07:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:31,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:31,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-28 23:07:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:31,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:31,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200416725] [2021-10-28 23:07:31,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200416725] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:31,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:31,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-28 23:07:31,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83598512] [2021-10-28 23:07:31,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:07:31,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:31,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:07:31,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:07:31,870 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:32,538 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-10-28 23:07:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:07:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:07:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:32,541 INFO L225 Difference]: With dead ends: 153 [2021-10-28 23:07:32,541 INFO L226 Difference]: Without dead ends: 153 [2021-10-28 23:07:32,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:07:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-28 23:07:32,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 81. [2021-10-28 23:07:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 77 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2021-10-28 23:07:32,550 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 17 [2021-10-28 23:07:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:32,550 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2021-10-28 23:07:32,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2021-10-28 23:07:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:07:32,552 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:32,552 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:32,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:32,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:32,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 674842861, now seen corresponding path program 1 times [2021-10-28 23:07:32,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:32,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507975099] [2021-10-28 23:07:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:32,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:32,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:32,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:32,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:07:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:32,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:07:32,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:32,960 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 [2021-10-28 23:07:32,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 23:07:33,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 23:07:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:33,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:33,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:33,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507975099] [2021-10-28 23:07:33,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507975099] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:33,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:33,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:07:33,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721485255] [2021-10-28 23:07:33,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:07:33,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:33,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:07:33,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:07:33,135 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:33,627 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2021-10-28 23:07:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:07:33,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:07:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:33,629 INFO L225 Difference]: With dead ends: 105 [2021-10-28 23:07:33,629 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 23:07:33,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:07:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 23:07:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2021-10-28 23:07:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 79 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2021-10-28 23:07:33,638 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 17 [2021-10-28 23:07:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:33,638 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2021-10-28 23:07:33,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2021-10-28 23:07:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:07:33,640 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:33,640 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:33,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:33,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:33,844 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 674842862, now seen corresponding path program 1 times [2021-10-28 23:07:33,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:33,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060718218] [2021-10-28 23:07:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:33,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:33,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:33,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:07:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:34,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:07:34,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:34,049 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 [2021-10-28 23:07:34,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 23:07:34,107 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 [2021-10-28 23:07:34,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-28 23:07:34,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-28 23:07:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:34,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:34,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:34,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060718218] [2021-10-28 23:07:34,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060718218] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:34,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:34,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 23:07:34,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609336428] [2021-10-28 23:07:34,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:07:34,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:07:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:07:34,629 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:36,026 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2021-10-28 23:07:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:07:36,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:07:36,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:36,028 INFO L225 Difference]: With dead ends: 107 [2021-10-28 23:07:36,028 INFO L226 Difference]: Without dead ends: 107 [2021-10-28 23:07:36,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:07:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-28 23:07:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2021-10-28 23:07:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.403225806451613) internal successors, (87), 75 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2021-10-28 23:07:36,036 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 17 [2021-10-28 23:07:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:36,036 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2021-10-28 23:07:36,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2021-10-28 23:07:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:07:36,038 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:36,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:36,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 23:07:36,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:36,249 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1426802311, now seen corresponding path program 1 times [2021-10-28 23:07:36,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:36,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413695518] [2021-10-28 23:07:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:36,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:36,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:36,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:07:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:36,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:07:36,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:36,469 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 [2021-10-28 23:07:36,499 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 [2021-10-28 23:07:36,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 23:07:36,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-28 23:07:36,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-28 23:07:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:36,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:36,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:36,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413695518] [2021-10-28 23:07:36,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413695518] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:36,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:36,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 23:07:36,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436108225] [2021-10-28 23:07:36,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:07:36,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:07:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:07:36,993 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:37,984 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2021-10-28 23:07:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:07:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 23:07:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:37,986 INFO L225 Difference]: With dead ends: 99 [2021-10-28 23:07:37,986 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 23:07:37,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:07:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 23:07:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 71. [2021-10-28 23:07:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 67 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-10-28 23:07:37,997 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 18 [2021-10-28 23:07:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:37,997 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-10-28 23:07:37,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-10-28 23:07:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:07:37,999 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:37,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:38,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:38,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:38,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1426802312, now seen corresponding path program 1 times [2021-10-28 23:07:38,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:38,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052531614] [2021-10-28 23:07:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:38,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:38,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:38,211 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:38,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:07:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:38,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:07:38,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:38,416 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 [2021-10-28 23:07:38,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-28 23:07:38,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 23:07:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:38,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:38,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:38,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052531614] [2021-10-28 23:07:38,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052531614] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:38,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:38,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:07:38,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028230668] [2021-10-28 23:07:38,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:07:38,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:07:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:07:38,584 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:38,952 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2021-10-28 23:07:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:07:38,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 23:07:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:38,954 INFO L225 Difference]: With dead ends: 91 [2021-10-28 23:07:38,954 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 23:07:38,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:07:38,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 23:07:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2021-10-28 23:07:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 61 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-10-28 23:07:38,961 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 18 [2021-10-28 23:07:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:38,961 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-10-28 23:07:38,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-10-28 23:07:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:07:38,963 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:38,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:38,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:39,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:39,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr24ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -985440585, now seen corresponding path program 1 times [2021-10-28 23:07:39,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:39,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759205642] [2021-10-28 23:07:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:39,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:39,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:39,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:39,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:07:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:39,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:07:39,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:39,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:07:39,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 23:07:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:39,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:39,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-28 23:07:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:39,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:39,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759205642] [2021-10-28 23:07:39,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759205642] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:39,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:39,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 23:07:39,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886187828] [2021-10-28 23:07:39,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:07:39,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:39,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:07:39,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:07:39,514 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:39,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:39,828 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2021-10-28 23:07:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:07:39,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:07:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:39,830 INFO L225 Difference]: With dead ends: 107 [2021-10-28 23:07:39,830 INFO L226 Difference]: Without dead ends: 107 [2021-10-28 23:07:39,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:07:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-28 23:07:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2021-10-28 23:07:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 69 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-10-28 23:07:39,837 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 19 [2021-10-28 23:07:39,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:39,838 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-10-28 23:07:39,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-10-28 23:07:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:07:39,839 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:39,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:39,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-28 23:07:40,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:40,051 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:40,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash -985388030, now seen corresponding path program 1 times [2021-10-28 23:07:40,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:40,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342738646] [2021-10-28 23:07:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:40,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:40,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:40,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:40,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:07:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:40,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:07:40,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:40,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:07:40,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 23:07:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:40,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:07:40,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-28 23:07:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:40,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:07:40,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342738646] [2021-10-28 23:07:40,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342738646] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:07:40,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:07:40,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-28 23:07:40,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688238104] [2021-10-28 23:07:40,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:07:40,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:07:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:07:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:07:40,484 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:41,166 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2021-10-28 23:07:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:07:41,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:07:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:41,169 INFO L225 Difference]: With dead ends: 135 [2021-10-28 23:07:41,169 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 23:07:41,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:07:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 23:07:41,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 87. [2021-10-28 23:07:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 76 states have (on average 1.25) internal successors, (95), 83 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2021-10-28 23:07:41,177 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 19 [2021-10-28 23:07:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:41,178 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2021-10-28 23:07:41,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:07:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2021-10-28 23:07:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:07:41,180 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:41,180 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] [2021-10-28 23:07:41,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:41,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:41,402 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr25ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 21 more)] === [2021-10-28 23:07:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -483881938, now seen corresponding path program 1 times [2021-10-28 23:07:41,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:07:41,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391086493] [2021-10-28 23:07:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:41,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:07:41,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:07:41,413 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:07:41,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:07:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:07:41,636 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:07:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:07:41,762 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:07:41,763 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:07:41,765 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr25ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:07:41,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:07:41,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:07:41,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:07:41,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:07:41,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:07:41,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:07:41,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:07:41,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:07:41,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:07:41,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:07:41,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:07:41,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:07:41,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:07:41,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:07:41,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:07:41,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:07:41,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:07:41,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:41,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:07:41,982 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:41,984 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:07:41,996 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:07:42,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:07:42 BoogieIcfgContainer [2021-10-28 23:07:42,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:07:42,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:07:42,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:07:42,019 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:07:42,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:07:28" (3/4) ... [2021-10-28 23:07:42,023 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:07:42,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:07:42,024 INFO L168 Benchmark]: Toolchain (without parser) took 14836.23 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 44.1 MB in the beginning and 53.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:42,025 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:07:42,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.25 ms. Allocated memory is still 65.0 MB. Free memory was 43.9 MB in the beginning and 41.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:42,026 INFO L168 Benchmark]: Boogie Preprocessor took 148.05 ms. Allocated memory is still 65.0 MB. Free memory was 41.4 MB in the beginning and 38.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:42,026 INFO L168 Benchmark]: RCFGBuilder took 899.53 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 38.3 MB in the beginning and 61.0 MB in the end (delta: -22.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:42,027 INFO L168 Benchmark]: TraceAbstraction took 13129.73 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 54.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:42,027 INFO L168 Benchmark]: Witness Printer took 4.76 ms. Allocated memory is still 90.2 MB. Free memory was 54.8 MB in the beginning and 53.9 MB in the end (delta: 866.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:42,029 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 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 646.25 ms. Allocated memory is still 65.0 MB. Free memory was 43.9 MB in the beginning and 41.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 148.05 ms. Allocated memory is still 65.0 MB. Free memory was 41.4 MB in the beginning and 38.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 899.53 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 38.3 MB in the beginning and 61.0 MB in the end (delta: -22.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13129.73 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 54.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.76 ms. Allocated memory is still 90.2 MB. Free memory was 54.8 MB in the beginning and 53.9 MB in the end (delta: 866.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={1:0}, p={1:0}] [L551] p = a VAL [a={1:0}, p={1:0}] [L552] EXPR p->h VAL [a={1:0}, p={1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={1:0}, p={1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={1:0}, p={1:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 96 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 383 SDtfs, 1033 SDslu, 1104 SDs, 0 SdLazy, 1407 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 234 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=9, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 275 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 272 ConstructedInterpolants, 0 QuantifiedInterpolants, 1240 SizeOfPredicates, 47 NumberOfNonLiveVariables, 753 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 16/16 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 [2021-10-28 23:07:42,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b8b409-bdf4-414e-b9e5-a538bbadbe76/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...