./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i --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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/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 62fd7ea4bef52a1e791bedc427ce7156627e7f58 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:24:12,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:24:12,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:24:12,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:24:12,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:24:12,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:24:12,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:24:12,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:24:12,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:24:12,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:24:12,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:24:12,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:24:12,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:24:12,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:24:12,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:24:12,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:24:13,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:24:13,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:24:13,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:24:13,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:24:13,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:24:13,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:24:13,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:24:13,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:24:13,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:24:13,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:24:13,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:24:13,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:24:13,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:24:13,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:24:13,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:24:13,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:24:13,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:24:13,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:24:13,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:24:13,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:24:13,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:24:13,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:24:13,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:24:13,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:24:13,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:24:13,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:24:13,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:24:13,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:24:13,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:24:13,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:24:13,102 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:24:13,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:24:13,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:24:13,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:24:13,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:24:13,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:24:13,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:24:13,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:24:13,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:24:13,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:24:13,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:24:13,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:24:13,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:24:13,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:24:13,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:24:13,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:24:13,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:13,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:24:13,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:24:13,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:24:13,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:24:13,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:24:13,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:24:13,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:24:13,117 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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62fd7ea4bef52a1e791bedc427ce7156627e7f58 [2021-10-11 00:24:13,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:24:13,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:24:13,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:24:13,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:24:13,480 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:24:13,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2021-10-11 00:24:13,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/data/27acc41a1/8ddb85b5da694e16af8fd277b9b57f03/FLAG66a3ad083 [2021-10-11 00:24:14,162 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:24:14,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2021-10-11 00:24:14,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/data/27acc41a1/8ddb85b5da694e16af8fd277b9b57f03/FLAG66a3ad083 [2021-10-11 00:24:14,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/data/27acc41a1/8ddb85b5da694e16af8fd277b9b57f03 [2021-10-11 00:24:14,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:24:14,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:24:14,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:14,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:24:14,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:24:14,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:14" (1/1) ... [2021-10-11 00:24:14,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47757a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:14, skipping insertion in model container [2021-10-11 00:24:14,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:14" (1/1) ... [2021-10-11 00:24:14,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:24:14,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:24:14,938 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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-10-11 00:24:14,946 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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-10-11 00:24:14,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:14,964 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:24:15,027 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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-10-11 00:24:15,030 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_8e5f9681-9c3f-4ced-9ec0-b113954584e9/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-10-11 00:24:15,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:15,140 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:24:15,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15 WrapperNode [2021-10-11 00:24:15,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:15,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:15,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:24:15,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:24:15,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:15,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:24:15,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:24:15,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:24:15,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... [2021-10-11 00:24:15,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:24:15,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:24:15,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:24:15,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:24:15,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/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 00:24:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-11 00:24:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-11 00:24:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:24:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:24:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:24:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:24:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:24:15,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:24:15,371 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 00:24:16,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:24:16,156 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 00:24:16,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:16 BoogieIcfgContainer [2021-10-11 00:24:16,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:24:16,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:24:16,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:24:16,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:24:16,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:24:14" (1/3) ... [2021-10-11 00:24:16,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16681544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:16, skipping insertion in model container [2021-10-11 00:24:16,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:15" (2/3) ... [2021-10-11 00:24:16,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16681544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:16, skipping insertion in model container [2021-10-11 00:24:16,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:16" (3/3) ... [2021-10-11 00:24:16,171 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-10-11 00:24:16,195 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 00:24:16,195 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:24:16,200 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:24:16,201 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 00:24:16,250 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,251 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,252 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,252 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,252 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,252 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,253 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,254 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,254 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,254 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,255 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,255 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,255 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:24:16,272 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 00:24:16,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:24:16,313 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:24:16,314 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:24:16,314 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:24:16,314 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:24:16,314 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:24:16,314 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:24:16,314 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:24:16,315 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:24:16,328 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 00:24:16,330 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 47 transitions, 99 flow [2021-10-11 00:24:16,334 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 47 transitions, 99 flow [2021-10-11 00:24:16,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2021-10-11 00:24:16,372 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-10-11 00:24:16,373 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 00:24:16,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-10-11 00:24:16,383 INFO L116 LiptonReduction]: Number of co-enabled transitions 378 [2021-10-11 00:24:16,868 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-10-11 00:24:19,509 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-10-11 00:24:19,781 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-10-11 00:24:19,883 INFO L131 LiptonReduction]: Checked pairs total: 808 [2021-10-11 00:24:19,884 INFO L133 LiptonReduction]: Total number of compositions: 36 [2021-10-11 00:24:19,891 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2021-10-11 00:24:19,901 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 38 states. [2021-10-11 00:24:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-10-11 00:24:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:24:19,910 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:19,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:24:19,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash 10739436, now seen corresponding path program 1 times [2021-10-11 00:24:19,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:19,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645891085] [2021-10-11 00:24:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:20,201 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 00:24:20,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645891085] [2021-10-11 00:24:20,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:20,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:24:20,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208140893] [2021-10-11 00:24:20,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:20,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:20,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:20,239 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2021-10-11 00:24:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:20,277 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2021-10-11 00:24:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:20,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 00:24:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:20,289 INFO L225 Difference]: With dead ends: 29 [2021-10-11 00:24:20,290 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 00:24:20,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 00:24:20,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 00:24:20,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-11 00:24:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 00:24:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2021-10-11 00:24:20,339 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 4 [2021-10-11 00:24:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:20,340 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 38 transitions. [2021-10-11 00:24:20,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 38 transitions. [2021-10-11 00:24:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:24:20,342 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:20,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:24:20,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:24:20,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:20,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:20,355 INFO L82 PathProgramCache]: Analyzing trace with hash 332930875, now seen corresponding path program 1 times [2021-10-11 00:24:20,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:20,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592303027] [2021-10-11 00:24:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:20,452 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 00:24:20,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592303027] [2021-10-11 00:24:20,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:20,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:24:20,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961938015] [2021-10-11 00:24:20,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:20,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:20,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:20,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:20,457 INFO L87 Difference]: Start difference. First operand 22 states and 38 transitions. Second operand 3 states. [2021-10-11 00:24:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:20,465 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2021-10-11 00:24:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:20,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:24:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:20,467 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:24:20,467 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 00:24:20,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:24:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 00:24:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 00:24:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 00:24:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2021-10-11 00:24:20,473 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 5 [2021-10-11 00:24:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:20,473 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2021-10-11 00:24:20,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2021-10-11 00:24:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:24:20,474 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:20,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:20,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:24:20,475 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2110825467, now seen corresponding path program 1 times [2021-10-11 00:24:20,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:20,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433991514] [2021-10-11 00:24:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:20,573 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 00:24:20,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433991514] [2021-10-11 00:24:20,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:20,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:20,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63959147] [2021-10-11 00:24:20,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:20,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:20,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:20,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:20,576 INFO L87 Difference]: Start difference. First operand 18 states and 27 transitions. Second operand 4 states. [2021-10-11 00:24:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:20,605 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2021-10-11 00:24:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:20,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:24:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:20,607 INFO L225 Difference]: With dead ends: 14 [2021-10-11 00:24:20,607 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 00:24:20,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:20,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 00:24:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 00:24:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 00:24:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-10-11 00:24:20,618 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2021-10-11 00:24:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:20,619 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-11 00:24:20,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2021-10-11 00:24:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:24:20,620 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:20,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:20,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:24:20,621 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:20,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1243762462, now seen corresponding path program 1 times [2021-10-11 00:24:20,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:20,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832611100] [2021-10-11 00:24:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:20,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832611100] [2021-10-11 00:24:20,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:20,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:24:20,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983765885] [2021-10-11 00:24:20,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:20,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:20,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:20,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:20,746 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 4 states. [2021-10-11 00:24:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:20,758 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2021-10-11 00:24:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:20,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 00:24:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:20,759 INFO L225 Difference]: With dead ends: 13 [2021-10-11 00:24:20,759 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:24:20,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:24:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:24:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:24:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:24:20,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-11 00:24:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:20,761 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:24:20,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:24:20,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:24:20,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:24:20,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:24:20 BasicIcfg [2021-10-11 00:24:20,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:24:20,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:24:20,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:24:20,775 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:24:20,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:16" (3/4) ... [2021-10-11 00:24:20,779 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:24:20,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-10-11 00:24:20,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2021-10-11 00:24:20,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-11 00:24:20,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:24:20,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:24:20,894 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e5f9681-9c3f-4ced-9ec0-b113954584e9/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:24:20,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:24:20,896 INFO L168 Benchmark]: Toolchain (without parser) took 6449.27 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 81.5 MB in the beginning and 140.8 MB in the end (delta: -59.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:20,896 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 121.6 MB. Free memory was 100.1 MB in the beginning and 100.0 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:20,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.84 ms. Allocated memory is still 121.6 MB. Free memory was 81.3 MB in the beginning and 76.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:20,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.83 ms. Allocated memory is still 121.6 MB. Free memory was 76.5 MB in the beginning and 74.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:20,903 INFO L168 Benchmark]: Boogie Preprocessor took 33.44 ms. Allocated memory is still 121.6 MB. Free memory was 74.8 MB in the beginning and 73.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:20,903 INFO L168 Benchmark]: RCFGBuilder took 899.84 ms. Allocated memory is still 121.6 MB. Free memory was 73.4 MB in the beginning and 84.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:20,904 INFO L168 Benchmark]: TraceAbstraction took 4611.28 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 84.7 MB in the beginning and 144.0 MB in the end (delta: -59.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:20,905 INFO L168 Benchmark]: Witness Printer took 120.31 ms. Allocated memory is still 176.2 MB. Free memory was 144.0 MB in the beginning and 140.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:20,908 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 121.6 MB. Free memory was 100.1 MB in the beginning and 100.0 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.84 ms. Allocated memory is still 121.6 MB. Free memory was 81.3 MB in the beginning and 76.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.83 ms. Allocated memory is still 121.6 MB. Free memory was 76.5 MB in the beginning and 74.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.44 ms. Allocated memory is still 121.6 MB. Free memory was 74.8 MB in the beginning and 73.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 899.84 ms. Allocated memory is still 121.6 MB. Free memory was 73.4 MB in the beginning and 84.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4611.28 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 84.7 MB in the beginning and 144.0 MB in the end (delta: -59.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 120.31 ms. Allocated memory is still 176.2 MB. Free memory was 144.0 MB in the beginning and 140.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 242 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 23 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 49 PlacesBefore, 17 PlacesAfterwards, 47 TransitionsBefore, 14 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 808 MoverChecksTotal - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: 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 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 38 SDtfs, 18 SDslu, 20 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be correct! Received shutdown request...