./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:21:14,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:21:14,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:21:15,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:21:15,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:21:15,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:21:15,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:21:15,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:21:15,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:21:15,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:21:15,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:21:15,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:21:15,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:21:15,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:21:15,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:21:15,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:21:15,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:21:15,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:21:15,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:21:15,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:21:15,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:21:15,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:21:15,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:21:15,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:21:15,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:21:15,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:21:15,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:21:15,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:21:15,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:21:15,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:21:15,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:21:15,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:21:15,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:21:15,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:21:15,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:21:15,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:21:15,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:21:15,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:21:15,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:21:15,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:21:15,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:21:15,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:21:15,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:21:15,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:21:15,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:21:15,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:21:15,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:21:15,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:21:15,170 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:21:15,171 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:21:15,171 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:21:15,171 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:21:15,172 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:21:15,173 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:21:15,173 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:21:15,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:21:15,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:21:15,173 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:21:15,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:21:15,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:21:15,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:21:15,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:21:15,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:21:15,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:21:15,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:21:15,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:21:15,175 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:21:15,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:21:15,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:21:15,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:21:15,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:21:15,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:21:15,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:21:15,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:21:15,180 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:21:15,181 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2021-10-21 19:21:15,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:21:15,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:21:15,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:21:15,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:21:15,509 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:21:15,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/locks/test_locks_6.c [2021-10-21 19:21:15,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/data/fd8b255c6/53d9a2613069483992d2bb6526cad6b3/FLAG99b0182a5 [2021-10-21 19:21:16,238 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:21:16,239 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/sv-benchmarks/c/locks/test_locks_6.c [2021-10-21 19:21:16,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/data/fd8b255c6/53d9a2613069483992d2bb6526cad6b3/FLAG99b0182a5 [2021-10-21 19:21:16,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/data/fd8b255c6/53d9a2613069483992d2bb6526cad6b3 [2021-10-21 19:21:16,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:21:16,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:21:16,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:16,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:21:16,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:21:16,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:16,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db19152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16, skipping insertion in model container [2021-10-21 19:21:16,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:16,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:21:16,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:21:16,892 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-21 19:21:16,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:16,925 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:21:16,962 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-21 19:21:16,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:16,983 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:21:16,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16 WrapperNode [2021-10-21 19:21:16,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:16,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:16,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:21:16,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:21:16,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:17,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:21:17,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:21:17,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:21:17,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:21:17,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:21:17,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:21:17,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:21:17,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (1/1) ... [2021-10-21 19:21:17,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:21:17,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:17,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:21:17,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:21:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:21:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:21:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:21:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:21:17,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:21:17,505 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:21:17,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:17 BoogieIcfgContainer [2021-10-21 19:21:17,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:21:17,508 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:21:17,508 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:21:17,512 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:21:17,512 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:21:17,513 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:21:16" (1/3) ... [2021-10-21 19:21:17,514 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40f8af3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:21:17, skipping insertion in model container [2021-10-21 19:21:17,515 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:21:17,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:16" (2/3) ... [2021-10-21 19:21:17,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40f8af3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:21:17, skipping insertion in model container [2021-10-21 19:21:17,516 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:21:17,516 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:17" (3/3) ... [2021-10-21 19:21:17,517 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_6.c [2021-10-21 19:21:17,557 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:21:17,558 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:21:17,558 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:21:17,558 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:21:17,558 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:21:17,559 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:21:17,559 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:21:17,559 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:21:17,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:17,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-21 19:21:17,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:21:17,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:21:17,599 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:21:17,599 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:17,614 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:21:17,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:17,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-21 19:21:17,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:21:17,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:21:17,621 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:21:17,621 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:17,628 INFO L791 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 9#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 12#L99-1true [2021-10-21 19:21:17,628 INFO L793 eck$LassoCheckResult]: Loop: 12#L99-1true assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 8#L31true assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 15#L48true assume 0 != main_~p1~0;main_~lk1~0 := 1; 4#L48-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 28#L52-1true assume !(0 != main_~p3~0); 21#L56-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 6#L60-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 25#L64-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 24#L68-1true assume !(0 != main_~p1~0); 27#L74-1true assume !(0 != main_~p2~0); 13#L79-1true assume !(0 != main_~p3~0); 23#L84-1true assume !(0 != main_~p4~0); 14#L89-1true assume !(0 != main_~p5~0); 11#L94-1true assume !(0 != main_~p6~0); 12#L99-1true [2021-10-21 19:21:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:17,643 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-21 19:21:17,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:17,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661177693] [2021-10-21 19:21:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:17,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:17,804 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:17,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:17,873 INFO L82 PathProgramCache]: Analyzing trace with hash -11500681, now seen corresponding path program 1 times [2021-10-21 19:21:17,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:17,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335001621] [2021-10-21 19:21:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:17,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:17,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:17,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335001621] [2021-10-21 19:21:17,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335001621] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:17,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:17,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:21:17,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814131585] [2021-10-21 19:21:17,991 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:21:17,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:21:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:21:18,026 INFO L87 Difference]: Start difference. First operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:18,081 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2021-10-21 19:21:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:21:18,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 82 transitions. [2021-10-21 19:21:18,096 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-10-21 19:21:18,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 41 states and 63 transitions. [2021-10-21 19:21:18,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-21 19:21:18,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-21 19:21:18,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 63 transitions. [2021-10-21 19:21:18,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:21:18,105 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-21 19:21:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 63 transitions. [2021-10-21 19:21:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-21 19:21:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2021-10-21 19:21:18,151 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-21 19:21:18,151 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-21 19:21:18,152 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:21:18,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2021-10-21 19:21:18,157 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-10-21 19:21:18,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:21:18,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:21:18,159 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:21:18,159 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:18,159 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 90#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 104#L99-1 [2021-10-21 19:21:18,160 INFO L793 eck$LassoCheckResult]: Loop: 104#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 119#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 118#L48 assume !(0 != main_~p1~0); 87#L48-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 88#L52-1 assume !(0 != main_~p3~0); 117#L56-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 116#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 115#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 114#L68-1 assume !(0 != main_~p1~0); 111#L74-1 assume !(0 != main_~p2~0); 109#L79-1 assume !(0 != main_~p3~0); 92#L84-1 assume !(0 != main_~p4~0); 123#L89-1 assume !(0 != main_~p5~0); 121#L94-1 assume !(0 != main_~p6~0); 104#L99-1 [2021-10-21 19:21:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-21 19:21:18,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388371577] [2021-10-21 19:21:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,183 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,203 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:18,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,204 INFO L82 PathProgramCache]: Analyzing trace with hash 246664757, now seen corresponding path program 1 times [2021-10-21 19:21:18,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542419238] [2021-10-21 19:21:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:18,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:18,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542419238] [2021-10-21 19:21:18,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542419238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:18,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:18,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:21:18,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827038135] [2021-10-21 19:21:18,239 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:21:18,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:18,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:21:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:21:18,241 INFO L87 Difference]: Start difference. First operand 41 states and 63 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:18,260 INFO L93 Difference]: Finished difference Result 78 states and 118 transitions. [2021-10-21 19:21:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:21:18,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 118 transitions. [2021-10-21 19:21:18,265 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2021-10-21 19:21:18,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 78 states and 118 transitions. [2021-10-21 19:21:18,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2021-10-21 19:21:18,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-21 19:21:18,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 118 transitions. [2021-10-21 19:21:18,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:21:18,270 INFO L681 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-21 19:21:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 118 transitions. [2021-10-21 19:21:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-21 19:21:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 77 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 118 transitions. [2021-10-21 19:21:18,291 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-21 19:21:18,292 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-21 19:21:18,292 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:21:18,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 118 transitions. [2021-10-21 19:21:18,298 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2021-10-21 19:21:18,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:21:18,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:21:18,305 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:21:18,305 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:18,305 INFO L791 eck$LassoCheckResult]: Stem: 214#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 215#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 227#L99-1 [2021-10-21 19:21:18,306 INFO L793 eck$LassoCheckResult]: Loop: 227#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 263#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 259#L48 assume !(0 != main_~p1~0); 258#L48-2 assume !(0 != main_~p2~0); 257#L52-1 assume !(0 != main_~p3~0); 255#L56-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 253#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 251#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 249#L68-1 assume !(0 != main_~p1~0); 240#L74-1 assume !(0 != main_~p2~0); 238#L79-1 assume !(0 != main_~p3~0); 217#L84-1 assume !(0 != main_~p4~0); 276#L89-1 assume !(0 != main_~p5~0); 272#L94-1 assume !(0 != main_~p6~0); 227#L99-1 [2021-10-21 19:21:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,306 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-21 19:21:18,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879304779] [2021-10-21 19:21:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,331 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,349 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:18,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,350 INFO L82 PathProgramCache]: Analyzing trace with hash 947729335, now seen corresponding path program 1 times [2021-10-21 19:21:18,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776324722] [2021-10-21 19:21:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:18,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:18,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776324722] [2021-10-21 19:21:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776324722] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:18,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:18,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:21:18,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85609712] [2021-10-21 19:21:18,384 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:21:18,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:21:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:21:18,385 INFO L87 Difference]: Start difference. First operand 78 states and 118 transitions. cyclomatic complexity: 44 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:18,430 INFO L93 Difference]: Finished difference Result 150 states and 222 transitions. [2021-10-21 19:21:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:21:18,431 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 222 transitions. [2021-10-21 19:21:18,434 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2021-10-21 19:21:18,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 222 transitions. [2021-10-21 19:21:18,438 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2021-10-21 19:21:18,438 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2021-10-21 19:21:18,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 222 transitions. [2021-10-21 19:21:18,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:21:18,440 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-21 19:21:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 222 transitions. [2021-10-21 19:21:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-21 19:21:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.48) internal successors, (222), 149 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2021-10-21 19:21:18,468 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-21 19:21:18,468 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-21 19:21:18,468 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:21:18,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 222 transitions. [2021-10-21 19:21:18,470 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2021-10-21 19:21:18,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:21:18,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:21:18,471 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:21:18,471 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:18,472 INFO L791 eck$LassoCheckResult]: Stem: 448#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 449#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 461#L99-1 [2021-10-21 19:21:18,472 INFO L793 eck$LassoCheckResult]: Loop: 461#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 503#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 498#L48 assume !(0 != main_~p1~0); 492#L48-2 assume !(0 != main_~p2~0); 485#L52-1 assume !(0 != main_~p3~0); 486#L56-1 assume !(0 != main_~p4~0); 546#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 545#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 539#L68-1 assume !(0 != main_~p1~0); 541#L74-1 assume !(0 != main_~p2~0); 538#L79-1 assume !(0 != main_~p3~0); 536#L84-1 assume !(0 != main_~p4~0); 535#L89-1 assume !(0 != main_~p5~0); 517#L94-1 assume !(0 != main_~p6~0); 461#L99-1 [2021-10-21 19:21:18,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,473 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-21 19:21:18,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812246273] [2021-10-21 19:21:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,485 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,501 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1627787705, now seen corresponding path program 1 times [2021-10-21 19:21:18,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805392632] [2021-10-21 19:21:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:18,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:18,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805392632] [2021-10-21 19:21:18,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805392632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:18,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:18,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:21:18,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779682353] [2021-10-21 19:21:18,533 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:21:18,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:21:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:21:18,534 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:18,566 INFO L93 Difference]: Finished difference Result 290 states and 418 transitions. [2021-10-21 19:21:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:21:18,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 290 states and 418 transitions. [2021-10-21 19:21:18,571 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2021-10-21 19:21:18,576 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 290 states to 290 states and 418 transitions. [2021-10-21 19:21:18,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 290 [2021-10-21 19:21:18,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 290 [2021-10-21 19:21:18,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 290 states and 418 transitions. [2021-10-21 19:21:18,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:21:18,581 INFO L681 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-21 19:21:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states and 418 transitions. [2021-10-21 19:21:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-10-21 19:21:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.4413793103448276) internal successors, (418), 289 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 418 transitions. [2021-10-21 19:21:18,607 INFO L704 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-21 19:21:18,607 INFO L587 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-21 19:21:18,607 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:21:18,607 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 418 transitions. [2021-10-21 19:21:18,615 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2021-10-21 19:21:18,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:21:18,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:21:18,617 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:21:18,620 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:18,621 INFO L791 eck$LassoCheckResult]: Stem: 894#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 895#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 907#L99-1 [2021-10-21 19:21:18,621 INFO L793 eck$LassoCheckResult]: Loop: 907#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 955#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 953#L48 assume !(0 != main_~p1~0); 949#L48-2 assume !(0 != main_~p2~0); 947#L52-1 assume !(0 != main_~p3~0); 943#L56-1 assume !(0 != main_~p4~0); 939#L60-1 assume !(0 != main_~p5~0); 937#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 934#L68-1 assume !(0 != main_~p1~0); 935#L74-1 assume !(0 != main_~p2~0); 971#L79-1 assume !(0 != main_~p3~0); 966#L84-1 assume !(0 != main_~p4~0); 962#L89-1 assume !(0 != main_~p5~0); 959#L94-1 assume !(0 != main_~p6~0); 907#L99-1 [2021-10-21 19:21:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-21 19:21:18,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618707093] [2021-10-21 19:21:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,650 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,680 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,687 INFO L82 PathProgramCache]: Analyzing trace with hash 818441079, now seen corresponding path program 1 times [2021-10-21 19:21:18,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109273390] [2021-10-21 19:21:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:18,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:18,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109273390] [2021-10-21 19:21:18,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109273390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:18,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:18,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:21:18,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511122499] [2021-10-21 19:21:18,741 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:21:18,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:18,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:21:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:21:18,742 INFO L87 Difference]: Start difference. First operand 290 states and 418 transitions. cyclomatic complexity: 144 Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:18,762 INFO L93 Difference]: Finished difference Result 562 states and 786 transitions. [2021-10-21 19:21:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:21:18,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 562 states and 786 transitions. [2021-10-21 19:21:18,769 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2021-10-21 19:21:18,776 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 562 states to 562 states and 786 transitions. [2021-10-21 19:21:18,776 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 562 [2021-10-21 19:21:18,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 562 [2021-10-21 19:21:18,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 562 states and 786 transitions. [2021-10-21 19:21:18,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:21:18,783 INFO L681 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-21 19:21:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states and 786 transitions. [2021-10-21 19:21:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-21 19:21:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 562 states have (on average 1.398576512455516) internal successors, (786), 561 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 786 transitions. [2021-10-21 19:21:18,817 INFO L704 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-21 19:21:18,817 INFO L587 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-21 19:21:18,817 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:21:18,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 562 states and 786 transitions. [2021-10-21 19:21:18,822 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2021-10-21 19:21:18,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:21:18,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:21:18,824 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:21:18,824 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:18,824 INFO L791 eck$LassoCheckResult]: Stem: 1752#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1753#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 1765#L99-1 [2021-10-21 19:21:18,824 INFO L793 eck$LassoCheckResult]: Loop: 1765#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 1846#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 1842#L48 assume !(0 != main_~p1~0); 1835#L48-2 assume !(0 != main_~p2~0); 1830#L52-1 assume !(0 != main_~p3~0); 1823#L56-1 assume !(0 != main_~p4~0); 1815#L60-1 assume !(0 != main_~p5~0); 1809#L64-1 assume !(0 != main_~p6~0); 1803#L68-1 assume !(0 != main_~p1~0); 1804#L74-1 assume !(0 != main_~p2~0); 1873#L79-1 assume !(0 != main_~p3~0); 1864#L84-1 assume !(0 != main_~p4~0); 1857#L89-1 assume !(0 != main_~p5~0); 1853#L94-1 assume !(0 != main_~p6~0); 1765#L99-1 [2021-10-21 19:21:18,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,825 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-21 19:21:18,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663770750] [2021-10-21 19:21:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,839 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,853 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1701518855, now seen corresponding path program 1 times [2021-10-21 19:21:18,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381143100] [2021-10-21 19:21:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,862 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,872 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1159342651, now seen corresponding path program 1 times [2021-10-21 19:21:18,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:18,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945141868] [2021-10-21 19:21:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:18,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,887 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:18,906 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:19,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:21:19 BoogieIcfgContainer [2021-10-21 19:21:19,522 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:21:19,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:21:19,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:21:19,523 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:21:19,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:17" (3/4) ... [2021-10-21 19:21:19,551 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:21:19,618 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:21:19,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:21:19,627 INFO L168 Benchmark]: Toolchain (without parser) took 3039.77 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 64.8 MB in the beginning and 84.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 969.9 kB. Max. memory is 16.1 GB. [2021-10-21 19:21:19,628 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 107.0 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:19,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.75 ms. Allocated memory is still 107.0 MB. Free memory was 64.6 MB in the beginning and 81.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:19,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.98 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:19,632 INFO L168 Benchmark]: Boogie Preprocessor took 48.21 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:19,633 INFO L168 Benchmark]: RCFGBuilder took 421.49 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 68.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:19,633 INFO L168 Benchmark]: BuchiAutomizer took 2013.62 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.1 MB in the beginning and 86.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 44.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:19,634 INFO L168 Benchmark]: Witness Printer took 102.56 ms. Allocated memory is still 130.0 MB. Free memory was 86.6 MB in the beginning and 84.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:19,638 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 107.0 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.75 ms. Allocated memory is still 107.0 MB. Free memory was 64.6 MB in the beginning and 81.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.98 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.21 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 421.49 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 68.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2013.62 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.1 MB in the beginning and 86.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 44.4 MB. Max. memory is 16.1 GB. * Witness Printer took 102.56 ms. Allocated memory is still 130.0 MB. Free memory was 86.6 MB in the beginning and 84.6 MB in the end (delta: 2.0 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: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 562 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 136.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 562 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 256 SDtfs, 130 SDslu, 149 SDs, 0 SdLazy, 25 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI5 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 29]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28471} State at position 1 is {NULL=28474, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=28471, p4=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34c54963=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d4bde=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e3221d1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37bdce09=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29ad07cc=0, cond=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43a4da9c=0, NULL=28473, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ca74790=9, NULL=0, NULL=0, NULL=0, NULL=28472, lk3=0, lk4=0, lk5=0, lk6=0, NULL=0, lk1=0, lk2=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 29]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L27] int cond; Loop: [L29] COND TRUE 1 [L30] cond = __VERIFIER_nondet_int() [L31] COND FALSE !(cond == 0) [L34] lk1 = 0 [L36] lk2 = 0 [L38] lk3 = 0 [L40] lk4 = 0 [L42] lk5 = 0 [L44] lk6 = 0 [L48] COND FALSE !(p1 != 0) [L52] COND FALSE !(p2 != 0) [L56] COND FALSE !(p3 != 0) [L60] COND FALSE !(p4 != 0) [L64] COND FALSE !(p5 != 0) [L68] COND FALSE !(p6 != 0) [L74] COND FALSE !(p1 != 0) [L79] COND FALSE !(p2 != 0) [L84] COND FALSE !(p3 != 0) [L89] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L99] COND FALSE !(p6 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:21:19,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ffdad4d-0afb-4ab2-a658-c2102c593343/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...