./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer --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 0adf73b7dd596c46d6accaa4759d997d536c99cf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer --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 0adf73b7dd596c46d6accaa4759d997d536c99cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:57:17,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:57:17,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:57:17,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:57:17,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:57:17,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:57:17,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:57:17,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:57:17,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:57:17,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:57:17,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:57:17,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:57:17,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:57:17,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:57:17,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:57:17,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:57:17,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:57:17,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:57:17,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:57:17,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:57:17,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:57:17,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:57:17,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:57:17,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:57:17,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:57:17,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:57:17,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:57:17,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:57:17,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:57:17,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:57:17,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:57:17,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:57:17,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:57:17,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:57:17,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:57:17,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:57:17,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:57:17,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:57:17,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:57:17,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:57:17,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:57:17,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 21:57:17,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:57:17,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:57:17,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:57:17,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:57:17,432 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:57:17,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:57:17,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:57:17,433 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:57:17,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:57:17,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:57:17,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:57:17,434 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 21:57:17,435 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 21:57:17,435 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 21:57:17,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:57:17,435 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 21:57:17,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:57:17,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:57:17,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:57:17,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:57:17,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:57:17,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:57:17,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:57:17,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:57:17,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:57:17,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:57:17,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:57:17,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:57:17,439 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-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-11-29 21:57:17,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:57:17,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:57:17,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:57:17,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:57:17,792 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:57:17,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-29 21:57:17,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/777e15af7/01ed8bacdced475ba19381d3d62c3144/FLAG07c34ec5d [2020-11-29 21:57:18,576 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:57:18,577 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-29 21:57:18,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/777e15af7/01ed8bacdced475ba19381d3d62c3144/FLAG07c34ec5d [2020-11-29 21:57:18,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/777e15af7/01ed8bacdced475ba19381d3d62c3144 [2020-11-29 21:57:18,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:57:18,853 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 21:57:18,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:57:18,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:57:18,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:57:18,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:57:18" (1/1) ... [2020-11-29 21:57:18,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c277cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:18, skipping insertion in model container [2020-11-29 21:57:18,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:57:18" (1/1) ... [2020-11-29 21:57:18,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:57:18,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:57:19,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:57:19,368 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:57:19,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:57:19,501 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:57:19,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19 WrapperNode [2020-11-29 21:57:19,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:57:19,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:57:19,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:57:19,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:57:19,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... [2020-11-29 21:57:19,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... [2020-11-29 21:57:19,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... [2020-11-29 21:57:19,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... [2020-11-29 21:57:19,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... [2020-11-29 21:57:19,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... [2020-11-29 21:57:19,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... [2020-11-29 21:57:19,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:57:19,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:57:19,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:57:19,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:57:19,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:57:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 21:57:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:57:19,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 21:57:19,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 21:57:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 21:57:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 21:57:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 21:57:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 21:57:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 21:57:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 21:57:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 21:57:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 21:57:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 21:57:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 21:57:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 21:57:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 21:57:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 21:57:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 21:57:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 21:57:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 21:57:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 21:57:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 21:57:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 21:57:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 21:57:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 21:57:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 21:57:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 21:57:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 21:57:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 21:57:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 21:57:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 21:57:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 21:57:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 21:57:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 21:57:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 21:57:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 21:57:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 21:57:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 21:57:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 21:57:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 21:57:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 21:57:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 21:57:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 21:57:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 21:57:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 21:57:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 21:57:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 21:57:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 21:57:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 21:57:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 21:57:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 21:57:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 21:57:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 21:57:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 21:57:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 21:57:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 21:57:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 21:57:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 21:57:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-29 21:57:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 21:57:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 21:57:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 21:57:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 21:57:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 21:57:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 21:57:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 21:57:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 21:57:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 21:57:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 21:57:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 21:57:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 21:57:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 21:57:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 21:57:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 21:57:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 21:57:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 21:57:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 21:57:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 21:57:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 21:57:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 21:57:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 21:57:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 21:57:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 21:57:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 21:57:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 21:57:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 21:57:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 21:57:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 21:57:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 21:57:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 21:57:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 21:57:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 21:57:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 21:57:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 21:57:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 21:57:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 21:57:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 21:57:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 21:57:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 21:57:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 21:57:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 21:57:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 21:57:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 21:57:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 21:57:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 21:57:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 21:57:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 21:57:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 21:57:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 21:57:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 21:57:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 21:57:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 21:57:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:57:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 21:57:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 21:57:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 21:57:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:57:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 21:57:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:57:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:57:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 21:57:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:57:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:57:20,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:57:20,907 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 21:57:20,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:20 BoogieIcfgContainer [2020-11-29 21:57:20,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:57:20,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:57:20,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:57:20,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:57:20,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:57:18" (1/3) ... [2020-11-29 21:57:20,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76389635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:57:20, skipping insertion in model container [2020-11-29 21:57:20,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:19" (2/3) ... [2020-11-29 21:57:20,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76389635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:57:20, skipping insertion in model container [2020-11-29 21:57:20,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:20" (3/3) ... [2020-11-29 21:57:20,928 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-11-29 21:57:20,950 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:57:20,956 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2020-11-29 21:57:20,975 INFO L253 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2020-11-29 21:57:21,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:57:21,002 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 21:57:21,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:57:21,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:57:21,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:57:21,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:57:21,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:57:21,003 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:57:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-11-29 21:57:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 21:57:21,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:21,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:21,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:21,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1473888481, now seen corresponding path program 1 times [2020-11-29 21:57:21,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:21,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702500797] [2020-11-29 21:57:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:21,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702500797] [2020-11-29 21:57:21,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:21,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:57:21,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293877373] [2020-11-29 21:57:21,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:21,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:21,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:21,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:21,356 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 4 states. [2020-11-29 21:57:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:21,872 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-11-29 21:57:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:57:21,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 21:57:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:21,908 INFO L225 Difference]: With dead ends: 125 [2020-11-29 21:57:21,908 INFO L226 Difference]: Without dead ends: 121 [2020-11-29 21:57:21,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-29 21:57:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2020-11-29 21:57:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-29 21:57:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-11-29 21:57:22,004 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 7 [2020-11-29 21:57:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:22,004 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-11-29 21:57:22,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-11-29 21:57:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 21:57:22,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:22,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:22,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:57:22,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:22,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1473888482, now seen corresponding path program 1 times [2020-11-29 21:57:22,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:22,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739489090] [2020-11-29 21:57:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:22,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739489090] [2020-11-29 21:57:22,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:22,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:57:22,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349842072] [2020-11-29 21:57:22,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:22,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:22,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:22,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:22,154 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 4 states. [2020-11-29 21:57:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:22,632 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-11-29 21:57:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:57:22,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 21:57:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:22,636 INFO L225 Difference]: With dead ends: 135 [2020-11-29 21:57:22,636 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 21:57:22,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 21:57:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-11-29 21:57:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 21:57:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2020-11-29 21:57:22,672 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 7 [2020-11-29 21:57:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:22,673 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2020-11-29 21:57:22,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2020-11-29 21:57:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:57:22,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:22,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:22,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:57:22,676 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:22,684 INFO L82 PathProgramCache]: Analyzing trace with hash -916999114, now seen corresponding path program 1 times [2020-11-29 21:57:22,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:22,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758917062] [2020-11-29 21:57:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:22,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:22,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758917062] [2020-11-29 21:57:22,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:22,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:57:22,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113979364] [2020-11-29 21:57:22,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:57:22,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:22,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:57:22,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:22,871 INFO L87 Difference]: Start difference. First operand 122 states and 131 transitions. Second operand 5 states. [2020-11-29 21:57:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:23,349 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-11-29 21:57:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:57:23,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 21:57:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:23,352 INFO L225 Difference]: With dead ends: 129 [2020-11-29 21:57:23,352 INFO L226 Difference]: Without dead ends: 129 [2020-11-29 21:57:23,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-29 21:57:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2020-11-29 21:57:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-29 21:57:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2020-11-29 21:57:23,375 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 12 [2020-11-29 21:57:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:23,375 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2020-11-29 21:57:23,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:57:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2020-11-29 21:57:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:57:23,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:23,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:23,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:57:23,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:23,387 INFO L82 PathProgramCache]: Analyzing trace with hash -916999113, now seen corresponding path program 1 times [2020-11-29 21:57:23,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:23,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863221901] [2020-11-29 21:57:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:23,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:23,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863221901] [2020-11-29 21:57:23,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:23,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:57:23,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455699133] [2020-11-29 21:57:23,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:57:23,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:23,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:57:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:23,583 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand 5 states. [2020-11-29 21:57:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:24,092 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2020-11-29 21:57:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:57:24,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 21:57:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:24,095 INFO L225 Difference]: With dead ends: 151 [2020-11-29 21:57:24,095 INFO L226 Difference]: Without dead ends: 151 [2020-11-29 21:57:24,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-29 21:57:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2020-11-29 21:57:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-29 21:57:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2020-11-29 21:57:24,109 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 12 [2020-11-29 21:57:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:24,109 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2020-11-29 21:57:24,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:57:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2020-11-29 21:57:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 21:57:24,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:24,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:24,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:57:24,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:24,112 INFO L82 PathProgramCache]: Analyzing trace with hash 808964045, now seen corresponding path program 1 times [2020-11-29 21:57:24,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:24,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921505081] [2020-11-29 21:57:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:24,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:24,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921505081] [2020-11-29 21:57:24,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:24,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:57:24,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563895611] [2020-11-29 21:57:24,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:57:24,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:24,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:57:24,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:24,211 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand 5 states. [2020-11-29 21:57:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:24,584 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-11-29 21:57:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:57:24,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 21:57:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:24,586 INFO L225 Difference]: With dead ends: 137 [2020-11-29 21:57:24,586 INFO L226 Difference]: Without dead ends: 137 [2020-11-29 21:57:24,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-29 21:57:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2020-11-29 21:57:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 21:57:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-11-29 21:57:24,600 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 16 [2020-11-29 21:57:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:24,600 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-11-29 21:57:24,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:57:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-11-29 21:57:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:57:24,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:24,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:24,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:57:24,603 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:24,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:24,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1966366765, now seen corresponding path program 1 times [2020-11-29 21:57:24,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:24,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976869551] [2020-11-29 21:57:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:24,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976869551] [2020-11-29 21:57:24,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:24,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:57:24,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737962341] [2020-11-29 21:57:24,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:57:24,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:24,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:57:24,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:24,722 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 7 states. [2020-11-29 21:57:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:25,323 INFO L93 Difference]: Finished difference Result 175 states and 192 transitions. [2020-11-29 21:57:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:57:25,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-29 21:57:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:25,325 INFO L225 Difference]: With dead ends: 175 [2020-11-29 21:57:25,325 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 21:57:25,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 21:57:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 121. [2020-11-29 21:57:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-29 21:57:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-11-29 21:57:25,335 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 15 [2020-11-29 21:57:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:25,335 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-11-29 21:57:25,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:57:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-11-29 21:57:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:57:25,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:25,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:25,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:57:25,337 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:25,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1966366766, now seen corresponding path program 1 times [2020-11-29 21:57:25,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:25,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676077350] [2020-11-29 21:57:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:25,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676077350] [2020-11-29 21:57:25,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:25,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:57:25,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989220107] [2020-11-29 21:57:25,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:57:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:25,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:57:25,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:25,479 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 7 states. [2020-11-29 21:57:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:26,334 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2020-11-29 21:57:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:57:26,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-29 21:57:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:26,337 INFO L225 Difference]: With dead ends: 201 [2020-11-29 21:57:26,337 INFO L226 Difference]: Without dead ends: 201 [2020-11-29 21:57:26,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:57:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-11-29 21:57:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 116. [2020-11-29 21:57:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-29 21:57:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-11-29 21:57:26,360 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 15 [2020-11-29 21:57:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:26,360 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-11-29 21:57:26,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:57:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-11-29 21:57:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:57:26,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:26,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:26,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:57:26,361 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:26,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:26,362 INFO L82 PathProgramCache]: Analyzing trace with hash 611018003, now seen corresponding path program 1 times [2020-11-29 21:57:26,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:26,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582474007] [2020-11-29 21:57:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:26,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582474007] [2020-11-29 21:57:26,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:26,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:57:26,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946023940] [2020-11-29 21:57:26,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:57:26,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:26,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:57:26,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:26,526 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 7 states. [2020-11-29 21:57:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:27,060 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2020-11-29 21:57:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:57:27,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 21:57:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:27,062 INFO L225 Difference]: With dead ends: 177 [2020-11-29 21:57:27,063 INFO L226 Difference]: Without dead ends: 177 [2020-11-29 21:57:27,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-29 21:57:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 123. [2020-11-29 21:57:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-29 21:57:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-11-29 21:57:27,070 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 19 [2020-11-29 21:57:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:27,071 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-11-29 21:57:27,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:57:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-11-29 21:57:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:57:27,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:27,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:27,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:57:27,073 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash 655601984, now seen corresponding path program 1 times [2020-11-29 21:57:27,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:27,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852377088] [2020-11-29 21:57:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:27,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852377088] [2020-11-29 21:57:27,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:27,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:57:27,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080537499] [2020-11-29 21:57:27,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:57:27,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:27,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:57:27,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:27,292 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand 6 states. [2020-11-29 21:57:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:27,675 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-11-29 21:57:27,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:57:27,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 21:57:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:27,678 INFO L225 Difference]: With dead ends: 127 [2020-11-29 21:57:27,678 INFO L226 Difference]: Without dead ends: 127 [2020-11-29 21:57:27,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-29 21:57:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2020-11-29 21:57:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 21:57:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-11-29 21:57:27,685 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 23 [2020-11-29 21:57:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:27,686 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-11-29 21:57:27,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:57:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-11-29 21:57:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:57:27,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:27,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:27,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 21:57:27,694 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash 83488924, now seen corresponding path program 1 times [2020-11-29 21:57:27,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:27,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941348504] [2020-11-29 21:57:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:27,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941348504] [2020-11-29 21:57:27,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:27,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:57:27,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702143036] [2020-11-29 21:57:27,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:57:27,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:27,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:57:27,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:27,859 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 7 states. [2020-11-29 21:57:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:28,581 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions. [2020-11-29 21:57:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:57:28,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-29 21:57:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:28,584 INFO L225 Difference]: With dead ends: 186 [2020-11-29 21:57:28,584 INFO L226 Difference]: Without dead ends: 186 [2020-11-29 21:57:28,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-29 21:57:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 121. [2020-11-29 21:57:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-29 21:57:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-11-29 21:57:28,595 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 23 [2020-11-29 21:57:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:28,596 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-11-29 21:57:28,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:57:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-11-29 21:57:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:57:28,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:28,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:28,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 21:57:28,607 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:28,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:28,608 INFO L82 PathProgramCache]: Analyzing trace with hash 83488925, now seen corresponding path program 1 times [2020-11-29 21:57:28,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:28,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034263525] [2020-11-29 21:57:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:57:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:28,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034263525] [2020-11-29 21:57:28,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:28,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:57:28,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860333575] [2020-11-29 21:57:28,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:57:28,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:28,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:57:28,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:28,834 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 7 states. [2020-11-29 21:57:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:29,617 INFO L93 Difference]: Finished difference Result 208 states and 229 transitions. [2020-11-29 21:57:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:57:29,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-29 21:57:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:29,620 INFO L225 Difference]: With dead ends: 208 [2020-11-29 21:57:29,620 INFO L226 Difference]: Without dead ends: 208 [2020-11-29 21:57:29,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-29 21:57:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 113. [2020-11-29 21:57:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 21:57:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-11-29 21:57:29,628 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 23 [2020-11-29 21:57:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:29,628 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-11-29 21:57:29,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:57:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-11-29 21:57:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 21:57:29,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:29,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:29,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 21:57:29,631 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:29,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1027853199, now seen corresponding path program 1 times [2020-11-29 21:57:29,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:29,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360703816] [2020-11-29 21:57:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:57:29,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:57:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:57:29,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:57:29,723 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:57:29,723 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 21:57:29,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 21:57:29,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:57:29 BoogieIcfgContainer [2020-11-29 21:57:29,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:57:29,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:57:29,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:57:29,788 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:57:29,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:20" (3/4) ... [2020-11-29 21:57:29,793 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:57:29,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:57:29,796 INFO L168 Benchmark]: Toolchain (without parser) took 10940.91 ms. Allocated memory was 113.2 MB in the beginning and 184.5 MB in the end (delta: 71.3 MB). Free memory was 80.3 MB in the beginning and 83.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 69.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:29,797 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 86.0 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:57:29,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.25 ms. Allocated memory is still 113.2 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:29,805 INFO L168 Benchmark]: Boogie Preprocessor took 118.44 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 76.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:29,806 INFO L168 Benchmark]: RCFGBuilder took 1283.54 ms. Allocated memory is still 113.2 MB. Free memory was 76.2 MB in the beginning and 74.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:29,807 INFO L168 Benchmark]: TraceAbstraction took 8873.15 ms. Allocated memory was 113.2 MB in the beginning and 184.5 MB in the end (delta: 71.3 MB). Free memory was 73.4 MB in the beginning and 84.3 MB in the end (delta: -10.9 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:29,808 INFO L168 Benchmark]: Witness Printer took 6.06 ms. Allocated memory is still 184.5 MB. Free memory was 84.3 MB in the beginning and 83.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:57:29,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 86.0 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 651.25 ms. Allocated memory is still 113.2 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.44 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 76.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1283.54 ms. Allocated memory is still 113.2 MB. Free memory was 76.2 MB in the beginning and 74.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8873.15 ms. Allocated memory was 113.2 MB in the beginning and 184.5 MB in the end (delta: 71.3 MB). Free memory was 73.4 MB in the beginning and 84.3 MB in the end (delta: -10.9 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.06 ms. Allocated memory is still 184.5 MB. Free memory was 84.3 MB in the beginning and 83.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 993. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1049] COND TRUE !(end->next) [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 53 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 972 SDtfs, 1249 SDslu, 1553 SDs, 0 SdLazy, 3545 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 433 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 12018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:57:32,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:57:32,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:57:33,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:57:33,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:57:33,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:57:33,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:57:33,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:57:33,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:57:33,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:57:33,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:57:33,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:57:33,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:57:33,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:57:33,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:57:33,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:57:33,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:57:33,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:57:33,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:57:33,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:57:33,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:57:33,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:57:33,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:57:33,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:57:33,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:57:33,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:57:33,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:57:33,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:57:33,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:57:33,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:57:33,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:57:33,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:57:33,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:57:33,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:57:33,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:57:33,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:57:33,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:57:33,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:57:33,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:57:33,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:57:33,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:57:33,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-29 21:57:33,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:57:33,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:57:33,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:57:33,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:57:33,235 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:57:33,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:57:33,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:57:33,236 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:57:33,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:57:33,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:57:33,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:57:33,239 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 21:57:33,239 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 21:57:33,239 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 21:57:33,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:57:33,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 21:57:33,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 21:57:33,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 21:57:33,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:57:33,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:57:33,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:57:33,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:57:33,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:57:33,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:57:33,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:57:33,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:57:33,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:57:33,244 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 21:57:33,244 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 21:57:33,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:57:33,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 21:57:33,245 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-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-11-29 21:57:33,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:57:33,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:57:33,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:57:33,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:57:33,854 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:57:33,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-29 21:57:33,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/aea71367e/a87bf17504dc46faa41fb1400188aed4/FLAG1319c62d8 [2020-11-29 21:57:34,630 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:57:34,632 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-11-29 21:57:34,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/aea71367e/a87bf17504dc46faa41fb1400188aed4/FLAG1319c62d8 [2020-11-29 21:57:34,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/data/aea71367e/a87bf17504dc46faa41fb1400188aed4 [2020-11-29 21:57:34,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:57:34,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 21:57:34,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:57:34,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:57:34,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:57:34,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:57:34" (1/1) ... [2020-11-29 21:57:34,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea2658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:34, skipping insertion in model container [2020-11-29 21:57:34,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:57:34" (1/1) ... [2020-11-29 21:57:34,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:57:35,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:57:35,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:57:35,501 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:57:35,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:57:35,654 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:57:35,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35 WrapperNode [2020-11-29 21:57:35,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:57:35,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:57:35,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:57:35,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:57:35,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... [2020-11-29 21:57:35,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... [2020-11-29 21:57:35,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... [2020-11-29 21:57:35,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... [2020-11-29 21:57:35,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... [2020-11-29 21:57:35,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... [2020-11-29 21:57:35,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... [2020-11-29 21:57:35,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:57:35,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:57:35,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:57:35,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:57:35,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:57:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 21:57:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:57:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 21:57:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 21:57:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 21:57:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 21:57:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 21:57:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 21:57:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 21:57:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 21:57:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 21:57:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 21:57:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 21:57:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 21:57:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 21:57:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 21:57:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 21:57:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 21:57:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 21:57:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 21:57:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 21:57:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 21:57:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 21:57:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 21:57:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 21:57:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 21:57:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 21:57:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 21:57:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 21:57:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 21:57:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 21:57:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 21:57:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 21:57:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 21:57:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 21:57:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 21:57:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 21:57:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 21:57:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 21:57:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 21:57:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 21:57:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 21:57:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 21:57:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 21:57:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 21:57:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 21:57:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 21:57:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 21:57:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 21:57:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 21:57:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 21:57:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 21:57:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 21:57:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 21:57:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 21:57:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 21:57:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 21:57:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 21:57:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 21:57:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-29 21:57:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 21:57:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 21:57:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 21:57:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 21:57:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 21:57:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 21:57:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 21:57:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 21:57:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 21:57:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 21:57:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 21:57:35,837 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 21:57:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 21:57:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 21:57:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 21:57:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 21:57:35,838 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 21:57:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 21:57:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 21:57:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 21:57:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 21:57:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 21:57:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 21:57:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 21:57:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 21:57:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 21:57:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 21:57:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 21:57:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 21:57:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 21:57:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 21:57:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 21:57:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 21:57:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 21:57:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 21:57:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 21:57:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 21:57:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 21:57:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 21:57:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 21:57:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 21:57:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 21:57:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 21:57:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 21:57:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 21:57:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 21:57:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 21:57:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 21:57:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 21:57:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 21:57:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 21:57:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 21:57:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 21:57:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:57:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 21:57:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 21:57:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 21:57:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 21:57:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 21:57:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 21:57:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:57:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 21:57:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 21:57:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:57:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 21:57:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-29 21:57:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-29 21:57:37,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:57:37,204 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 21:57:37,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:37 BoogieIcfgContainer [2020-11-29 21:57:37,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:57:37,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:57:37,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:57:37,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:57:37,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:57:34" (1/3) ... [2020-11-29 21:57:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb514b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:57:37, skipping insertion in model container [2020-11-29 21:57:37,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:57:35" (2/3) ... [2020-11-29 21:57:37,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb514b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:57:37, skipping insertion in model container [2020-11-29 21:57:37,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:37" (3/3) ... [2020-11-29 21:57:37,227 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-11-29 21:57:37,263 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:57:37,274 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2020-11-29 21:57:37,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2020-11-29 21:57:37,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:57:37,328 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 21:57:37,328 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:57:37,328 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:57:37,328 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:57:37,329 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:57:37,329 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:57:37,329 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:57:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-11-29 21:57:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 21:57:37,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:37,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:37,368 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:37,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1600099851, now seen corresponding path program 1 times [2020-11-29 21:57:37,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:37,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396832632] [2020-11-29 21:57:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:37,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 21:57:37,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:37,776 INFO L384 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 [2020-11-29 21:57:37,777 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:37,789 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:37,789 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:37,790 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 21:57:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:37,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:37,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396832632] [2020-11-29 21:57:37,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:37,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 21:57:37,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737030266] [2020-11-29 21:57:37,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:57:37,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:37,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:57:37,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:57:37,869 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-11-29 21:57:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:38,303 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2020-11-29 21:57:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:57:38,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-29 21:57:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:38,313 INFO L225 Difference]: With dead ends: 123 [2020-11-29 21:57:38,313 INFO L226 Difference]: Without dead ends: 119 [2020-11-29 21:57:38,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:57:38,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-29 21:57:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2020-11-29 21:57:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-29 21:57:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2020-11-29 21:57:38,381 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 7 [2020-11-29 21:57:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:38,382 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2020-11-29 21:57:38,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:57:38,382 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2020-11-29 21:57:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 21:57:38,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:38,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:38,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 21:57:38,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:38,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1600099850, now seen corresponding path program 1 times [2020-11-29 21:57:38,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:38,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113332864] [2020-11-29 21:57:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:38,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:57:38,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:38,790 INFO L384 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 [2020-11-29 21:57:38,790 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:38,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:38,798 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:38,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 21:57:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:38,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:38,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113332864] [2020-11-29 21:57:38,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:38,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-29 21:57:38,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093156041] [2020-11-29 21:57:38,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:38,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:38,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:38,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:38,886 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand 4 states. [2020-11-29 21:57:39,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:39,451 INFO L93 Difference]: Finished difference Result 133 states and 141 transitions. [2020-11-29 21:57:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:57:39,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 21:57:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:39,457 INFO L225 Difference]: With dead ends: 133 [2020-11-29 21:57:39,457 INFO L226 Difference]: Without dead ends: 133 [2020-11-29 21:57:39,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-29 21:57:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 120. [2020-11-29 21:57:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 21:57:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2020-11-29 21:57:39,487 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 7 [2020-11-29 21:57:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:39,488 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2020-11-29 21:57:39,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2020-11-29 21:57:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:57:39,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:39,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:39,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 21:57:39,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash 633585145, now seen corresponding path program 1 times [2020-11-29 21:57:39,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:39,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973984698] [2020-11-29 21:57:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:39,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:57:39,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:39,983 INFO L384 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 [2020-11-29 21:57:39,984 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:39,988 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:39,989 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:39,989 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 21:57:40,049 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:40,050 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-11-29 21:57:40,052 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:40,080 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-11-29 21:57:40,082 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:57:40,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-11-29 21:57:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:40,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:40,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973984698] [2020-11-29 21:57:40,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:40,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 21:57:40,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901854890] [2020-11-29 21:57:40,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:40,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:40,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:40,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:40,155 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 4 states. [2020-11-29 21:57:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:40,764 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-11-29 21:57:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:57:40,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 21:57:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:40,769 INFO L225 Difference]: With dead ends: 127 [2020-11-29 21:57:40,770 INFO L226 Difference]: Without dead ends: 127 [2020-11-29 21:57:40,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-29 21:57:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2020-11-29 21:57:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-29 21:57:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2020-11-29 21:57:40,792 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 11 [2020-11-29 21:57:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:40,793 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2020-11-29 21:57:40,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2020-11-29 21:57:40,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:57:40,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:40,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:41,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 21:57:41,004 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:41,005 INFO L82 PathProgramCache]: Analyzing trace with hash 633585146, now seen corresponding path program 1 times [2020-11-29 21:57:41,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:41,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326331186] [2020-11-29 21:57:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:41,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 21:57:41,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:41,277 INFO L384 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 [2020-11-29 21:57:41,277 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:41,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:41,287 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:41,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 21:57:41,362 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:41,363 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 21:57:41,364 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:41,404 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-11-29 21:57:41,405 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:57:41,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-11-29 21:57:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:41,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:41,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326331186] [2020-11-29 21:57:41,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:41,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-11-29 21:57:41,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146315823] [2020-11-29 21:57:41,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:57:41,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:41,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:57:41,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:41,756 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand 7 states. [2020-11-29 21:57:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:43,201 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2020-11-29 21:57:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:57:43,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-29 21:57:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:43,204 INFO L225 Difference]: With dead ends: 159 [2020-11-29 21:57:43,205 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 21:57:43,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 21:57:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 113. [2020-11-29 21:57:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 21:57:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2020-11-29 21:57:43,216 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 11 [2020-11-29 21:57:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:43,216 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2020-11-29 21:57:43,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:57:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2020-11-29 21:57:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:57:43,218 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:43,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:43,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 21:57:43,437 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1246188289, now seen corresponding path program 1 times [2020-11-29 21:57:43,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:43,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377327446] [2020-11-29 21:57:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:43,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:57:43,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:43,692 INFO L384 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 [2020-11-29 21:57:43,692 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:43,699 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:43,699 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:43,700 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 21:57:43,722 INFO L384 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 [2020-11-29 21:57:43,722 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:43,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:43,735 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:43,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-29 21:57:43,763 INFO L384 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 19 treesize of output 11 [2020-11-29 21:57:43,764 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:43,768 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:43,768 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:43,769 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-29 21:57:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:43,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:43,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377327446] [2020-11-29 21:57:43,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:43,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 21:57:43,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969763212] [2020-11-29 21:57:43,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:57:43,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:43,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:57:43,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:43,828 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand 6 states. [2020-11-29 21:57:44,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:44,670 INFO L93 Difference]: Finished difference Result 186 states and 208 transitions. [2020-11-29 21:57:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:57:44,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 21:57:44,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:44,673 INFO L225 Difference]: With dead ends: 186 [2020-11-29 21:57:44,673 INFO L226 Difference]: Without dead ends: 186 [2020-11-29 21:57:44,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-29 21:57:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 112. [2020-11-29 21:57:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-29 21:57:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2020-11-29 21:57:44,685 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 14 [2020-11-29 21:57:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:44,685 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2020-11-29 21:57:44,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:57:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2020-11-29 21:57:44,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:57:44,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:44,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:44,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 21:57:44,887 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:44,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:44,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1246188288, now seen corresponding path program 1 times [2020-11-29 21:57:44,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:44,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804852862] [2020-11-29 21:57:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:45,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:57:45,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:45,081 INFO L384 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 [2020-11-29 21:57:45,081 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,087 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:45,088 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,088 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 21:57:45,126 INFO L384 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 [2020-11-29 21:57:45,126 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,138 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:45,143 INFO L384 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 [2020-11-29 21:57:45,143 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:45,153 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,153 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-29 21:57:45,219 INFO L384 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 [2020-11-29 21:57:45,220 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:45,237 INFO L384 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 19 treesize of output 11 [2020-11-29 21:57:45,238 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:45,250 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:45,250 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-29 21:57:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:45,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:45,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804852862] [2020-11-29 21:57:45,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:45,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 21:57:45,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459858255] [2020-11-29 21:57:45,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:57:45,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:45,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:57:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:45,553 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand 10 states. [2020-11-29 21:57:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:48,426 INFO L93 Difference]: Finished difference Result 217 states and 244 transitions. [2020-11-29 21:57:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:57:48,427 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-29 21:57:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:48,428 INFO L225 Difference]: With dead ends: 217 [2020-11-29 21:57:48,428 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 21:57:48,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-11-29 21:57:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 21:57:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 108. [2020-11-29 21:57:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-29 21:57:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2020-11-29 21:57:48,442 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 14 [2020-11-29 21:57:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:48,442 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2020-11-29 21:57:48,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:57:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2020-11-29 21:57:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:57:48,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:48,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:48,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 21:57:48,662 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash 3050255, now seen corresponding path program 1 times [2020-11-29 21:57:48,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:48,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786358385] [2020-11-29 21:57:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:48,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:57:48,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:48,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:48,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786358385] [2020-11-29 21:57:48,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:48,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 21:57:48,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724618815] [2020-11-29 21:57:48,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:57:48,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:48,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:57:48,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:57:48,837 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 4 states. [2020-11-29 21:57:49,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:49,202 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-11-29 21:57:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:57:49,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 21:57:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:49,204 INFO L225 Difference]: With dead ends: 128 [2020-11-29 21:57:49,204 INFO L226 Difference]: Without dead ends: 128 [2020-11-29 21:57:49,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:49,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-29 21:57:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 107. [2020-11-29 21:57:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 21:57:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-11-29 21:57:49,211 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 15 [2020-11-29 21:57:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:49,212 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-11-29 21:57:49,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:57:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-11-29 21:57:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:57:49,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:49,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:49,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 21:57:49,423 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:49,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:49,423 INFO L82 PathProgramCache]: Analyzing trace with hash 519570213, now seen corresponding path program 1 times [2020-11-29 21:57:49,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:49,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803634482] [2020-11-29 21:57:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:49,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:57:49,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:49,595 INFO L384 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 [2020-11-29 21:57:49,596 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:49,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:49,603 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:49,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 21:57:49,648 INFO L384 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 19 treesize of output 7 [2020-11-29 21:57:49,648 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:49,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:49,653 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:49,654 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 21:57:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:49,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:49,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803634482] [2020-11-29 21:57:49,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:49,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 21:57:49,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876132394] [2020-11-29 21:57:49,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:57:49,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:49,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:57:49,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:57:49,696 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 5 states. [2020-11-29 21:57:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:50,281 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2020-11-29 21:57:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:57:50,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:57:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:50,284 INFO L225 Difference]: With dead ends: 166 [2020-11-29 21:57:50,284 INFO L226 Difference]: Without dead ends: 166 [2020-11-29 21:57:50,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-29 21:57:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 113. [2020-11-29 21:57:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 21:57:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-11-29 21:57:50,291 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 18 [2020-11-29 21:57:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:50,292 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-11-29 21:57:50,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:57:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-11-29 21:57:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 21:57:50,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:50,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:50,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 21:57:50,494 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:50,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1758607283, now seen corresponding path program 1 times [2020-11-29 21:57:50,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:50,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912151797] [2020-11-29 21:57:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:50,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:57:50,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:50,678 INFO L384 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 [2020-11-29 21:57:50,678 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:50,681 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:50,682 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:50,682 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 21:57:50,706 INFO L384 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 [2020-11-29 21:57:50,706 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:50,716 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:50,717 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:50,717 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-29 21:57:50,739 INFO L384 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 19 treesize of output 11 [2020-11-29 21:57:50,739 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:50,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:50,748 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:50,749 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-29 21:57:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:50,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:50,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912151797] [2020-11-29 21:57:50,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:50,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 21:57:50,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021217599] [2020-11-29 21:57:50,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:57:50,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:50,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:57:50,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:50,794 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 6 states. [2020-11-29 21:57:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:51,762 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-11-29 21:57:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:57:51,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-29 21:57:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:51,764 INFO L225 Difference]: With dead ends: 172 [2020-11-29 21:57:51,764 INFO L226 Difference]: Without dead ends: 172 [2020-11-29 21:57:51,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-29 21:57:51,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 112. [2020-11-29 21:57:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-29 21:57:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-11-29 21:57:51,771 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 21 [2020-11-29 21:57:51,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:51,771 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-11-29 21:57:51,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:57:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-11-29 21:57:51,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 21:57:51,773 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:51,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:51,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-29 21:57:51,974 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:51,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1758607282, now seen corresponding path program 1 times [2020-11-29 21:57:51,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:51,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867620343] [2020-11-29 21:57:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:52,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:57:52,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:52,200 INFO L384 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 [2020-11-29 21:57:52,200 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:52,206 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,206 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 21:57:52,229 INFO L384 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 [2020-11-29 21:57:52,230 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,242 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:52,247 INFO L384 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 [2020-11-29 21:57:52,247 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,258 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:52,259 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,259 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-29 21:57:52,284 INFO L384 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 [2020-11-29 21:57:52,285 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:52,309 INFO L384 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 19 treesize of output 11 [2020-11-29 21:57:52,310 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:52,319 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:52,319 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-29 21:57:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:52,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:52,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867620343] [2020-11-29 21:57:52,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:52,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 21:57:52,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027813936] [2020-11-29 21:57:52,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:57:52,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:52,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:57:52,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:52,646 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-11-29 21:57:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:55,597 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2020-11-29 21:57:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:57:55,599 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-29 21:57:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:55,600 INFO L225 Difference]: With dead ends: 224 [2020-11-29 21:57:55,600 INFO L226 Difference]: Without dead ends: 224 [2020-11-29 21:57:55,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-29 21:57:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-29 21:57:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 107. [2020-11-29 21:57:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 21:57:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-11-29 21:57:55,608 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 21 [2020-11-29 21:57:55,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:55,608 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-11-29 21:57:55,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:57:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-11-29 21:57:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:57:55,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:55,610 INFO L422 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] [2020-11-29 21:57:55,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-29 21:57:55,815 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:55,817 INFO L82 PathProgramCache]: Analyzing trace with hash -765256239, now seen corresponding path program 1 times [2020-11-29 21:57:55,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:55,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995870112] [2020-11-29 21:57:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:57:55,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:57:55,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:55,985 INFO L384 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 [2020-11-29 21:57:55,985 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:55,989 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:55,989 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:55,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-29 21:57:56,012 INFO L384 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 19 treesize of output 7 [2020-11-29 21:57:56,012 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:57:56,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:57:56,015 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:57:56,015 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 21:57:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:56,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:57:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:56,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995870112] [2020-11-29 21:57:56,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:56,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 21:57:56,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330632441] [2020-11-29 21:57:56,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:57:56,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:57:56,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:57:56,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:57:56,117 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 8 states. [2020-11-29 21:57:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:56,978 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2020-11-29 21:57:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:57:56,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-29 21:57:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:56,981 INFO L225 Difference]: With dead ends: 158 [2020-11-29 21:57:56,981 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 21:57:56,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 21:57:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2020-11-29 21:57:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-29 21:57:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-11-29 21:57:56,992 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 22 [2020-11-29 21:57:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:56,992 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-11-29 21:57:56,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:57:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-11-29 21:57:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:57:56,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:56,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:57,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-29 21:57:57,211 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-29 21:57:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash -673004413, now seen corresponding path program 1 times [2020-11-29 21:57:57,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:57:57,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495844771] [2020-11-29 21:57:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40008aeb-8f51-4fef-8d08-40b8fc8182a6/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-29 21:57:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:57:57,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:57:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:57:57,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:57:57,593 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 21:57:57,594 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 21:57:57,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-29 21:57:57,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:57:57 BoogieIcfgContainer [2020-11-29 21:57:57,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:57:57,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:57:57,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:57:57,835 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:57:57,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:57:37" (3/4) ... [2020-11-29 21:57:57,840 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:57:57,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:57:57,844 INFO L168 Benchmark]: Toolchain (without parser) took 22945.45 ms. Allocated memory was 67.1 MB in the beginning and 157.3 MB in the end (delta: 90.2 MB). Free memory was 47.5 MB in the beginning and 104.0 MB in the end (delta: -56.5 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:57,846 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 67.1 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:57:57,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.50 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 39.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:57,850 INFO L168 Benchmark]: Boogie Preprocessor took 90.91 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 36.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:57,851 INFO L168 Benchmark]: RCFGBuilder took 1465.23 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 36.1 MB in the beginning and 41.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:57,852 INFO L168 Benchmark]: TraceAbstraction took 20618.58 ms. Allocated memory was 88.1 MB in the beginning and 157.3 MB in the end (delta: 69.2 MB). Free memory was 41.2 MB in the beginning and 105.1 MB in the end (delta: -63.9 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:57,855 INFO L168 Benchmark]: Witness Printer took 6.20 ms. Allocated memory is still 157.3 MB. Free memory was 105.1 MB in the beginning and 104.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:57:57,857 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 67.1 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 754.50 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 39.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.91 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 36.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1465.23 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 36.1 MB in the beginning and 41.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20618.58 ms. Allocated memory was 88.1 MB in the beginning and 157.3 MB in the end (delta: 69.2 MB). Free memory was 41.2 MB in the beginning and 105.1 MB in the end (delta: -63.9 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.20 ms. Allocated memory is still 157.3 MB. Free memory was 105.1 MB in the beginning and 104.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 993. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1007] list->next = ((void*)0) VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1049] COND TRUE !(end->next) [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 133 locations, 53 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 951 SDtfs, 1594 SDslu, 2014 SDs, 0 SdLazy, 2869 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 262 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=0, 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, 11 MinimizatonAttempts, 559 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 300 ConstructedInterpolants, 4 QuantifiedInterpolants, 17791 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1018 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...