./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD --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 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc ...................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-28 23:50:26,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:50:26,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:50:26,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:50:26,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:50:26,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:50:26,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:50:26,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:50:26,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:50:26,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:50:26,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:50:26,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:50:26,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:50:26,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:50:26,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:50:26,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:50:26,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:50:26,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:50:26,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:50:26,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:50:26,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:50:26,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:50:26,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:50:26,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:50:26,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:50:26,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:50:26,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:50:26,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:50:26,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:50:26,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:50:26,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:50:26,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:50:26,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:50:26,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:50:26,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:50:26,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:50:26,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:50:26,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:50:26,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:50:26,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:50:26,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:50:26,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:50:26,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:50:26,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:50:26,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:50:26,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:50:26,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:50:26,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:50:26,308 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:50:26,309 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:50:26,309 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:50:26,309 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:50:26,311 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:50:26,311 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:50:26,311 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:50:26,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:50:26,312 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:50:26,312 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:50:26,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:50:26,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:50:26,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:50:26,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:50:26,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:50:26,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:50:26,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:50:26,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:50:26,315 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:50:26,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:50:26,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:50:26,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:50:26,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:50:26,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:50:26,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:50:26,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:50:26,321 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:50:26,321 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_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc [2021-10-28 23:50:26,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:50:26,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:50:26,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:50:26,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:50:26,709 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:50:26,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-10-28 23:50:26,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/data/0b218f890/34c0b99502c4493cbdb906388946c614/FLAG1cf8c9296 [2021-10-28 23:50:27,501 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:50:27,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-10-28 23:50:27,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/data/0b218f890/34c0b99502c4493cbdb906388946c614/FLAG1cf8c9296 [2021-10-28 23:50:27,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/data/0b218f890/34c0b99502c4493cbdb906388946c614 [2021-10-28 23:50:27,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:50:27,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:50:27,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:50:27,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:50:27,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:50:27,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:50:27" (1/1) ... [2021-10-28 23:50:27,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab55c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:27, skipping insertion in model container [2021-10-28 23:50:27,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:50:27" (1/1) ... [2021-10-28 23:50:27,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:50:27,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:50:28,175 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_beda7b94-90c0-42d1-bc1f-1195633188b2/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-10-28 23:50:28,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:50:28,190 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:50:28,324 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_beda7b94-90c0-42d1-bc1f-1195633188b2/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-10-28 23:50:28,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:50:28,348 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:50:28,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28 WrapperNode [2021-10-28 23:50:28,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:50:28,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:50:28,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:50:28,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:50:28,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:50:28,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:50:28,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:50:28,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:50:28,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:50:28,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:50:28,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:50:28,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:50:28,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (1/1) ... [2021-10-28 23:50:28,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:50:28,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:50:28,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:50:28,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:50:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:50:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:50:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:50:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:50:29,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:50:29,512 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:50:29,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:50:29 BoogieIcfgContainer [2021-10-28 23:50:29,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:50:29,516 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:50:29,516 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:50:29,522 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:50:29,523 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:50:29,524 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:50:27" (1/3) ... [2021-10-28 23:50:29,526 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@766fe62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:50:29, skipping insertion in model container [2021-10-28 23:50:29,526 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:50:29,526 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:50:28" (2/3) ... [2021-10-28 23:50:29,527 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@766fe62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:50:29, skipping insertion in model container [2021-10-28 23:50:29,527 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:50:29,527 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:50:29" (3/3) ... [2021-10-28 23:50:29,529 INFO L389 chiAutomizerObserver]: Analyzing ICFG psyco_abp_1-3.c [2021-10-28 23:50:29,600 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:50:29,600 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:50:29,600 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:50:29,601 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:50:29,601 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:50:29,601 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:50:29,601 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:50:29,601 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:50:29,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.9439252336448598) internal successors, (208), 107 states have internal predecessors, (208), 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) [2021-10-28 23:50:29,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2021-10-28 23:50:29,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:29,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:29,679 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:50:29,679 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:50:29,679 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:50:29,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.9439252336448598) internal successors, (208), 107 states have internal predecessors, (208), 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) [2021-10-28 23:50:29,693 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2021-10-28 23:50:29,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:29,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:29,695 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:50:29,695 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:50:29,703 INFO L791 eck$LassoCheckResult]: Stem: 94#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 32#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_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~nondet43, main_#t~nondet44, main_#t~nondet45, main_#t~nondet46, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 46#L26-2true [2021-10-28 23:50:29,703 INFO L793 eck$LassoCheckResult]: Loop: 46#L26-2true goto; 34#L559true assume !false;main_~P1~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~P2~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~P3~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~P4~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~P5~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~P6~0 := main_#t~nondet12;havoc main_#t~nondet12;main_~P7~0 := main_#t~nondet13;havoc main_#t~nondet13;main_~P8~0 := main_#t~nondet14;havoc main_#t~nondet14;main_~P9~0 := main_#t~nondet15;havoc main_#t~nondet15; 21#L41true assume !(0 == main_~q~0); 54#L61true assume !(1 == main_~q~0); 13#L161true assume !(2 == main_~q~0); 110#L261true assume !(3 == main_~q~0); 58#L361true assume !(4 == main_~q~0); 5#L461true assume !(5 == main_~q~0); 46#L26-2true [2021-10-28 23:50:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:29,710 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 23:50:29,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:29,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752428907] [2021-10-28 23:50:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:29,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:29,845 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:29,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2021581594, now seen corresponding path program 1 times [2021-10-28 23:50:29,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:29,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515004413] [2021-10-28 23:50:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:29,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:29,936 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:29,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:29,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1331020120, now seen corresponding path program 1 times [2021-10-28 23:50:29,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:29,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713092257] [2021-10-28 23:50:29,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:29,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:50:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:50:30,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:50:30,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713092257] [2021-10-28 23:50:30,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713092257] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:50:30,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:50:30,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:50:30,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127420862] [2021-10-28 23:50:30,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:50:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:50:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:50:30,325 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 1.9439252336448598) internal successors, (208), 107 states have internal predecessors, (208), 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 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-28 23:50:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:50:30,493 INFO L93 Difference]: Finished difference Result 111 states and 201 transitions. [2021-10-28 23:50:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:50:30,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 201 transitions. [2021-10-28 23:50:30,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-28 23:50:30,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 80 states and 121 transitions. [2021-10-28 23:50:30,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2021-10-28 23:50:30,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-10-28 23:50:30,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 121 transitions. [2021-10-28 23:50:30,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:50:30,522 INFO L681 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2021-10-28 23:50:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 121 transitions. [2021-10-28 23:50:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-28 23:50:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 1.5125) internal successors, (121), 79 states have internal predecessors, (121), 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) [2021-10-28 23:50:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 121 transitions. [2021-10-28 23:50:30,571 INFO L704 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2021-10-28 23:50:30,572 INFO L587 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2021-10-28 23:50:30,572 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:50:30,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 121 transitions. [2021-10-28 23:50:30,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-28 23:50:30,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:50:30,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:50:30,576 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:50:30,576 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:50:30,577 INFO L791 eck$LassoCheckResult]: Stem: 304#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(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 296#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_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~nondet43, main_#t~nondet44, main_#t~nondet45, main_#t~nondet46, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 297#L26-2 goto; 302#L559 [2021-10-28 23:50:30,577 INFO L793 eck$LassoCheckResult]: Loop: 302#L559 assume !false;main_~P1~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~P2~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~P3~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~P4~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~P5~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~P6~0 := main_#t~nondet12;havoc main_#t~nondet12;main_~P7~0 := main_#t~nondet13;havoc main_#t~nondet13;main_~P8~0 := main_#t~nondet14;havoc main_#t~nondet14;main_~P9~0 := main_#t~nondet15;havoc main_#t~nondet15; 279#L41 assume 0 == main_~q~0; 280#L42 assume !(0 != main_#t~nondet16);havoc main_#t~nondet16; 302#L559 [2021-10-28 23:50:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2021-10-28 23:50:30,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:30,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605456379] [2021-10-28 23:50:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:30,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:30,616 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:30,659 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:30,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash 40826, now seen corresponding path program 1 times [2021-10-28 23:50:30,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:30,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171201352] [2021-10-28 23:50:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:30,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:30,667 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:30,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:50:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash 889540504, now seen corresponding path program 1 times [2021-10-28 23:50:30,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:50:30,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192346206] [2021-10-28 23:50:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:50:30,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:50:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:30,692 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:50:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:50:30,713 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:50:31,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:50:31 BoogieIcfgContainer [2021-10-28 23:50:31,462 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:50:31,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:50:31,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:50:31,463 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:50:31,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:50:29" (3/4) ... [2021-10-28 23:50:31,467 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:50:31,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:50:31,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:50:31,514 INFO L168 Benchmark]: Toolchain (without parser) took 3751.31 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.9 MB in the beginning and 70.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:50:31,515 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 61.1 MB in the beginning and 61.0 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:50:31,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.76 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.6 MB in the beginning and 83.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:50:31,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.44 ms. Allocated memory is still 115.3 MB. Free memory was 83.2 MB in the beginning and 78.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:50:31,517 INFO L168 Benchmark]: Boogie Preprocessor took 90.13 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 75.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:50:31,518 INFO L168 Benchmark]: RCFGBuilder took 976.68 ms. Allocated memory is still 115.3 MB. Free memory was 75.5 MB in the beginning and 74.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:50:31,518 INFO L168 Benchmark]: BuchiAutomizer took 1946.40 ms. Allocated memory is still 115.3 MB. Free memory was 74.2 MB in the beginning and 72.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:50:31,519 INFO L168 Benchmark]: Witness Printer took 49.86 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 70.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:50:31,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 61.1 MB in the beginning and 61.0 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 583.76 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.6 MB in the beginning and 83.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.44 ms. Allocated memory is still 115.3 MB. Free memory was 83.2 MB in the beginning and 78.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.13 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 75.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 976.68 ms. Allocated memory is still 115.3 MB. Free memory was 75.5 MB in the beginning and 74.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1946.40 ms. Allocated memory is still 115.3 MB. Free memory was 74.2 MB in the beginning and 72.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * Witness Printer took 49.86 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 70.2 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 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 80 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 80 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 197 SDtfs, 4 SDslu, 151 SDs, 0 SdLazy, 43 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 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: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23959} State at position 1 is {NULL=0, m_Protocol=1, NULL=23959, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d97a52a=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49d5f48b=24, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a87b7cc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26bdf437=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3800c4fb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7edea901=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4dae8386=22, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15753e7d=19, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@459b770c=23, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@230ca298=20, NULL=0, NULL=0, P8=23, P6=22, P4=15, P2=18, this_buffer_empty=0, this_expect=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a40dd0d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3668f45f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68c904d5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c5212db=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1aa9ccc3=0, m_recv_ack_1_2=7, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@307608e9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41cdd8b4=0, m_msg_1_1=4, NULL=23960, \result=0, m_recv_ack_2=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ff362b9=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31f6b136=18, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f78ff79=21, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71e4a4bb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ec8fb11=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66ac2dd8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ada2b7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34711cb6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7535794e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53b80f85=0, NULL=23961, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ab16690=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d7440f3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2726ebf0=0, NULL=0, P9=20, P7=19, NULL=23962, P5=24, P3=21, P1=17, m_msg_2=2, m_msg_1_2=5, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@594048c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10950392=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e0c3a67=0, q=0, m_recv_ack_1_1=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24916254=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38100991=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14beabd9=0, method_id=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25111806=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ecc5a25=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46fd5ffd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9ed8a47=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L7] int m_Protocol = 1; [L8] int m_msg_2 = 2; [L9] int m_recv_ack_2 = 3; [L10] int m_msg_1_1 = 4; [L11] int m_msg_1_2 = 5; [L12] int m_recv_ack_1_1 = 6; [L13] int m_recv_ack_1_2 = 7; [L18] int q = 0; [L19] int method_id; [L22] unsigned int this_expect = 0; [L23] unsigned int this_buffer_empty = 0; Loop: [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L41] COND TRUE q == 0 [L42] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:50:31,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beda7b94-90c0-42d1-bc1f-1195633188b2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...