./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe54aa6cbf5093caec91497905a5a8a5f126c540 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:20:32,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:20:32,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:20:32,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:20:32,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:20:32,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:20:32,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:20:32,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:20:32,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:20:32,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:20:32,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:20:32,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:20:32,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:20:32,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:20:32,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:20:32,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:20:32,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:20:32,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:20:32,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:20:32,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:20:32,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:20:32,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:20:32,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:20:32,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:20:33,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:20:33,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:20:33,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:20:33,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:20:33,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:20:33,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:20:33,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:20:33,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:20:33,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:20:33,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:20:33,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:20:33,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:20:33,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:20:33,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:20:33,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:20:33,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:20:33,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:20:33,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:20:33,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:20:33,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:20:33,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:20:33,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:20:33,055 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:20:33,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:20:33,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:20:33,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:20:33,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:20:33,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:20:33,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:20:33,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:20:33,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:20:33,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:20:33,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:20:33,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:20:33,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:20:33,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:20:33,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:20:33,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:20:33,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:20:33,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:20:33,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:20:33,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:20:33,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:20:33,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:20:33,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:20:33,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:20:33,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe54aa6cbf5093caec91497905a5a8a5f126c540 [2021-10-11 00:20:33,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:20:33,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:20:33,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:20:33,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:20:33,358 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:20:33,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-11 00:20:33,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/data/8df6f193f/3ab680e4086c41c9800f90b42f26fa23/FLAGb3256cb00 [2021-10-11 00:20:33,999 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:20:34,004 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-11 00:20:34,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/data/8df6f193f/3ab680e4086c41c9800f90b42f26fa23/FLAGb3256cb00 [2021-10-11 00:20:34,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/data/8df6f193f/3ab680e4086c41c9800f90b42f26fa23 [2021-10-11 00:20:34,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:20:34,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:20:34,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:20:34,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:20:34,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:20:34,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9af6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34, skipping insertion in model container [2021-10-11 00:20:34,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:20:34,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:20:34,586 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-10-11 00:20:34,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:20:34,599 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:20:34,629 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-10-11 00:20:34,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:20:34,647 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:20:34,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34 WrapperNode [2021-10-11 00:20:34,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:20:34,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:20:34,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:20:34,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:20:34,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:20:34,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:20:34,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:20:34,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:20:34,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... [2021-10-11 00:20:34,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:20:34,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:20:34,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:20:34,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:20:34,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:20:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:20:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:20:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:20:34,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:20:35,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:20:35,164 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:20:35,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:35 BoogieIcfgContainer [2021-10-11 00:20:35,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:20:35,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:20:35,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:20:35,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:20:35,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:20:34" (1/3) ... [2021-10-11 00:20:35,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797ed31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:20:35, skipping insertion in model container [2021-10-11 00:20:35,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:20:34" (2/3) ... [2021-10-11 00:20:35,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797ed31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:20:35, skipping insertion in model container [2021-10-11 00:20:35,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:35" (3/3) ... [2021-10-11 00:20:35,174 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-10-11 00:20:35,202 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:20:35,205 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:20:35,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:20:35,255 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:20:35,255 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:20:35,255 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:20:35,255 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:20:35,255 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:20:35,256 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:20:35,256 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:20:35,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:20:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-10-11 00:20:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:20:35,273 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:35,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:20:35,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:35,279 INFO L82 PathProgramCache]: Analyzing trace with hash 28699838, now seen corresponding path program 1 times [2021-10-11 00:20:35,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:35,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347250233] [2021-10-11 00:20:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:35,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347250233] [2021-10-11 00:20:35,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:35,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:20:35,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546491090] [2021-10-11 00:20:35,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:20:35,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:35,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:35,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:35,550 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2021-10-11 00:20:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:35,691 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2021-10-11 00:20:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:35,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:20:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:35,714 INFO L225 Difference]: With dead ends: 65 [2021-10-11 00:20:35,722 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 00:20:35,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 00:20:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-11 00:20:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 00:20:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2021-10-11 00:20:35,767 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 5 [2021-10-11 00:20:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:35,768 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-10-11 00:20:35,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:20:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2021-10-11 00:20:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:20:35,772 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:35,772 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:35,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:20:35,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1523322994, now seen corresponding path program 1 times [2021-10-11 00:20:35,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:35,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853122985] [2021-10-11 00:20:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:35,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853122985] [2021-10-11 00:20:35,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:35,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:20:35,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438358835] [2021-10-11 00:20:35,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:20:35,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:35,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:35,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:35,859 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand 3 states. [2021-10-11 00:20:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:35,904 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2021-10-11 00:20:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:35,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 00:20:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:35,907 INFO L225 Difference]: With dead ends: 66 [2021-10-11 00:20:35,907 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 00:20:35,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 00:20:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-11 00:20:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-10-11 00:20:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2021-10-11 00:20:35,917 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 10 [2021-10-11 00:20:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:35,917 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2021-10-11 00:20:35,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:20:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2021-10-11 00:20:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:20:35,919 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:35,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:35,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:20:35,919 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:35,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:35,920 INFO L82 PathProgramCache]: Analyzing trace with hash 864936600, now seen corresponding path program 1 times [2021-10-11 00:20:35,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:35,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908544909] [2021-10-11 00:20:35,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:20:35,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908544909] [2021-10-11 00:20:35,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:35,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:20:35,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518619184] [2021-10-11 00:20:35,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:20:35,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:35,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:35,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:35,987 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand 3 states. [2021-10-11 00:20:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:36,066 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2021-10-11 00:20:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:36,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 00:20:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:36,070 INFO L225 Difference]: With dead ends: 89 [2021-10-11 00:20:36,070 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 00:20:36,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 00:20:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-11 00:20:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:20:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-10-11 00:20:36,079 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 17 [2021-10-11 00:20:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:36,079 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-10-11 00:20:36,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:20:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2021-10-11 00:20:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:20:36,080 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:36,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:36,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:20:36,083 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 163872022, now seen corresponding path program 1 times [2021-10-11 00:20:36,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:36,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263836757] [2021-10-11 00:20:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:20:36,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263836757] [2021-10-11 00:20:36,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:36,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:20:36,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311710512] [2021-10-11 00:20:36,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:20:36,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:36,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:36,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:36,152 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand 3 states. [2021-10-11 00:20:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:36,221 INFO L93 Difference]: Finished difference Result 117 states and 164 transitions. [2021-10-11 00:20:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:36,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 00:20:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:36,226 INFO L225 Difference]: With dead ends: 117 [2021-10-11 00:20:36,226 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 00:20:36,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:36,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 00:20:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-11 00:20:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 00:20:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2021-10-11 00:20:36,252 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 17 [2021-10-11 00:20:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:36,253 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2021-10-11 00:20:36,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:20:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2021-10-11 00:20:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:20:36,254 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:36,254 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:36,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:20:36,255 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1464847913, now seen corresponding path program 1 times [2021-10-11 00:20:36,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:36,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817136386] [2021-10-11 00:20:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:20:36,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817136386] [2021-10-11 00:20:36,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:36,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:20:36,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278441431] [2021-10-11 00:20:36,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:20:36,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:36,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:36,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:36,323 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand 3 states. [2021-10-11 00:20:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:36,385 INFO L93 Difference]: Finished difference Result 146 states and 204 transitions. [2021-10-11 00:20:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:36,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-10-11 00:20:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:36,387 INFO L225 Difference]: With dead ends: 146 [2021-10-11 00:20:36,387 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 00:20:36,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 00:20:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-11 00:20:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:20:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-10-11 00:20:36,408 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 20 [2021-10-11 00:20:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:36,409 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-10-11 00:20:36,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:20:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-10-11 00:20:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 00:20:36,410 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:20:36,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:20:36,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:20:36,411 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:20:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:20:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash -12347436, now seen corresponding path program 1 times [2021-10-11 00:20:36,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:20:36,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754289811] [2021-10-11 00:20:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:20:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:20:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 00:20:36,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754289811] [2021-10-11 00:20:36,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:20:36,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:20:36,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294429103] [2021-10-11 00:20:36,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:20:36,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:20:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:20:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:36,489 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 3 states. [2021-10-11 00:20:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:20:36,511 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2021-10-11 00:20:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:20:36,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-10-11 00:20:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:20:36,512 INFO L225 Difference]: With dead ends: 90 [2021-10-11 00:20:36,512 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:20:36,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:20:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:20:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:20:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:20:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:20:36,518 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-10-11 00:20:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:20:36,520 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:20:36,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:20:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:20:36,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:20:36,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:20:36,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:20:36,755 INFO L262 CegarLoopResult]: For program point L97(lines 97 99) no Hoare annotation was computed. [2021-10-11 00:20:36,756 INFO L262 CegarLoopResult]: For program point L31(lines 31 126) no Hoare annotation was computed. [2021-10-11 00:20:36,756 INFO L258 CegarLoopResult]: At program point L27(lines 26 129) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-10-11 00:20:36,756 INFO L258 CegarLoopResult]: At program point L52(lines 51 110) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~blastFlag~0 3)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-10-11 00:20:36,757 INFO L258 CegarLoopResult]: At program point L48(lines 47 112) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~blastFlag~0 3)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-10-11 00:20:36,762 INFO L258 CegarLoopResult]: At program point L98(lines 10 142) the Hoare annotation is: false [2021-10-11 00:20:36,762 INFO L258 CegarLoopResult]: At program point L32(lines 31 126) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~s__state~0 8512))) (or (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-10-11 00:20:36,763 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:20:36,763 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:20:36,763 INFO L262 CegarLoopResult]: For program point L94-1(lines 55 108) no Hoare annotation was computed. [2021-10-11 00:20:36,763 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:20:36,764 INFO L262 CegarLoopResult]: For program point L90-1(lines 55 108) no Hoare annotation was computed. [2021-10-11 00:20:36,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 140) no Hoare annotation was computed. [2021-10-11 00:20:36,764 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-11 00:20:36,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:20:36,764 INFO L262 CegarLoopResult]: For program point L79-1(lines 55 108) no Hoare annotation was computed. [2021-10-11 00:20:36,765 INFO L265 CegarLoopResult]: At program point L141(lines 10 142) the Hoare annotation is: true [2021-10-11 00:20:36,765 INFO L262 CegarLoopResult]: For program point L71(lines 71 75) no Hoare annotation was computed. [2021-10-11 00:20:36,765 INFO L262 CegarLoopResult]: For program point L26(lines 26 129) no Hoare annotation was computed. [2021-10-11 00:20:36,765 INFO L262 CegarLoopResult]: For program point L59-1(lines 55 108) no Hoare annotation was computed. [2021-10-11 00:20:36,765 INFO L262 CegarLoopResult]: For program point L51(lines 51 110) no Hoare annotation was computed. [2021-10-11 00:20:36,765 INFO L262 CegarLoopResult]: For program point L47(lines 47 112) no Hoare annotation was computed. [2021-10-11 00:20:36,766 INFO L265 CegarLoopResult]: At program point L138(lines 10 142) the Hoare annotation is: true [2021-10-11 00:20:36,766 INFO L258 CegarLoopResult]: At program point L101(lines 19 136) the Hoare annotation is: (or (and (<= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~blastFlag~0 3)) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-10-11 00:20:36,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:20:36 BoogieIcfgContainer [2021-10-11 00:20:36,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:20:36,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:20:36,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:20:36,794 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:20:36,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:20:35" (3/4) ... [2021-10-11 00:20:36,797 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:20:36,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:20:36,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:20:36,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:20:36,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:20:36,855 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922f584d-3bf6-4371-9482-0a9f942d6c80/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:20:36,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:20:36,857 INFO L168 Benchmark]: Toolchain (without parser) took 2508.43 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 83.0 MB in the beginning and 98.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:36,858 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:20:36,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.86 ms. Allocated memory is still 113.2 MB. Free memory was 82.7 MB in the beginning and 88.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:36,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.89 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 87.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:36,859 INFO L168 Benchmark]: Boogie Preprocessor took 20.72 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 86.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:20:36,860 INFO L168 Benchmark]: RCFGBuilder took 459.33 ms. Allocated memory is still 113.2 MB. Free memory was 86.0 MB in the beginning and 71.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:36,860 INFO L168 Benchmark]: TraceAbstraction took 1625.73 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 71.4 MB in the beginning and 100.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:36,865 INFO L168 Benchmark]: Witness Printer took 62.41 ms. Allocated memory is still 148.9 MB. Free memory was 100.3 MB in the beginning and 98.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:20:36,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.86 ms. Allocated memory is still 113.2 MB. Free memory was 82.7 MB in the beginning and 88.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.89 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 87.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.72 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 86.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 459.33 ms. Allocated memory is still 113.2 MB. Free memory was 86.0 MB in the beginning and 71.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1625.73 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 71.4 MB in the beginning and 100.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. * Witness Printer took 62.41 ms. Allocated memory is still 148.9 MB. Free memory was 100.3 MB in the beginning and 98.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 140]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && blastFlag <= 3) || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (s__state == 8512 && blastFlag == 2) || (s__state == 8512 && blastFlag == 0) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && blastFlag <= 3) || (8640 <= s__state && blastFlag == 2)) || (8640 <= s__state && blastFlag == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: blastFlag == 2 || blastFlag == 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && blastFlag <= 3) || (8640 <= s__state && blastFlag == 2)) || (8640 <= s__state && blastFlag == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 78 SDslu, 94 SDs, 0 SdLazy, 91 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 31 NumberOfFragments, 95 HoareAnnotationTreeSize, 8 FomulaSimplifications, 72 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 43/43 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 proved your program to be correct! Received shutdown request...