./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/systemc/toy2.cil.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_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/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_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/systemc/toy2.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/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_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/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 555edd5e457154aacaae7525f9a902378d06372618859d5999530e5c95267eeb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:13:04,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:13:04,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:13:04,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:13:04,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:13:04,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:13:04,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:13:04,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:13:04,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:13:04,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:13:04,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:13:04,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:13:04,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:13:04,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:13:04,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:13:04,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:13:04,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:13:04,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:13:04,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:13:04,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:13:04,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:13:04,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:13:04,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:13:04,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:13:04,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:13:04,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:13:04,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:13:04,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:13:04,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:13:04,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:13:04,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:13:04,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:13:04,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:13:04,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:13:04,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:13:04,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:13:04,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:13:04,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:13:04,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:13:04,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:13:04,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:13:04,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:13:04,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:13:04,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:13:04,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:13:04,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:13:04,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:13:04,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:13:04,539 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:13:04,539 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:13:04,539 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:13:04,539 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:13:04,540 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:13:04,540 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:13:04,540 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:13:04,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:13:04,540 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:13:04,541 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:13:04,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:13:04,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:13:04,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:13:04,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:13:04,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:13:04,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:13:04,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:13:04,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:13:04,542 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:13:04,543 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:13:04,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:13:04,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:13:04,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:13:04,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:13:04,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:13:04,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:13:04,545 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:13:04,545 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_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 555edd5e457154aacaae7525f9a902378d06372618859d5999530e5c95267eeb [2021-10-21 19:13:04,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:13:04,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:13:04,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:13:04,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:13:04,840 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:13:04,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/systemc/toy2.cil.c [2021-10-21 19:13:04,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/data/1d36a95f0/03795e795a4c45af84379b669a701084/FLAGbe1acdd1e [2021-10-21 19:13:05,403 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:13:05,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/sv-benchmarks/c/systemc/toy2.cil.c [2021-10-21 19:13:05,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/data/1d36a95f0/03795e795a4c45af84379b669a701084/FLAGbe1acdd1e [2021-10-21 19:13:05,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/data/1d36a95f0/03795e795a4c45af84379b669a701084 [2021-10-21 19:13:05,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:13:05,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:13:05,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:05,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:13:05,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:13:05,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:05" (1/1) ... [2021-10-21 19:13:05,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31796bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:05, skipping insertion in model container [2021-10-21 19:13:05,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:05" (1/1) ... [2021-10-21 19:13:05,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:13:05,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:13:06,019 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_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/sv-benchmarks/c/systemc/toy2.cil.c[393,406] [2021-10-21 19:13:06,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:06,108 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:13:06,129 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_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/sv-benchmarks/c/systemc/toy2.cil.c[393,406] [2021-10-21 19:13:06,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:06,208 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:13:06,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06 WrapperNode [2021-10-21 19:13:06,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:06,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:06,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:13:06,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:13:06,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:06,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:13:06,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:13:06,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:13:06,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:13:06,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:13:06,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:13:06,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:13:06,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (1/1) ... [2021-10-21 19:13:06,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:06,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:06,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:13:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:13:06,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:13:06,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:13:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:13:06,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:13:06,949 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-21 19:13:06,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:06 BoogieIcfgContainer [2021-10-21 19:13:06,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:13:06,953 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:13:06,953 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:13:06,956 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:13:06,957 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:13:06,957 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:13:05" (1/3) ... [2021-10-21 19:13:06,958 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ec8b415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:13:06, skipping insertion in model container [2021-10-21 19:13:06,959 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:13:06,959 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:06" (2/3) ... [2021-10-21 19:13:06,959 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ec8b415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:13:06, skipping insertion in model container [2021-10-21 19:13:06,959 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:13:06,959 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:06" (3/3) ... [2021-10-21 19:13:06,961 INFO L389 chiAutomizerObserver]: Analyzing ICFG toy2.cil.c [2021-10-21 19:13:07,003 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:13:07,004 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:13:07,004 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:13:07,004 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:13:07,004 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:13:07,004 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:13:07,004 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:13:07,004 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:13:07,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 124 states, 123 states have (on average 1.8699186991869918) internal successors, (230), 123 states have internal predecessors, (230), 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 19:13:07,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 89 [2021-10-21 19:13:07,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:07,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:07,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,060 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:13:07,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 124 states, 123 states have (on average 1.8699186991869918) internal successors, (230), 123 states have internal predecessors, (230), 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 19:13:07,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 89 [2021-10-21 19:13:07,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:07,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:07,071 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,071 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,078 INFO L791 eck$LassoCheckResult]: Stem: 112#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 39#L-1true havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 87#L396true assume !(1 == ~c_req_up~0); 25#L396-2true assume !(1 == ~wl_i~0);~wl_st~0 := 2; 94#L407-1true assume !(1 == ~c1_i~0);~c1_st~0 := 2; 88#L412-1true assume 1 == ~c2_i~0;~c2_st~0 := 0; 110#L417-1true assume !(1 == ~wb_i~0);~wb_st~0 := 2; 59#L422-1true assume !(1 == ~r_i~0);~r_st~0 := 2; 63#L427-1true assume !(0 == ~e_f~0); 72#L432-1true assume !(0 == ~e_g~0); 26#L437-1true assume !(0 == ~e_e~0); 38#L442-1true assume !(0 == ~e_c~0); 99#L447-1true assume !(0 == ~e_wl~0); 28#L452-1true assume !(1 == ~wl_pc~0); 103#L464true assume !(2 == ~wl_pc~0); 119#L465true assume !(1 == ~c1_pc~0); 70#L475true assume !(1 == ~c2_pc~0); 113#L484true assume !(1 == ~wb_pc~0); 9#L493true assume !(1 == ~e_c~0); 108#L502-1true assume !(1 == ~e_e~0); 16#L507-1true assume !(1 == ~e_f~0); 90#L512-1true assume !(1 == ~e_g~0); 19#L517-1true assume !(1 == ~e_c~0); 11#L522-1true assume !(1 == ~e_wl~0); 30#L664-1true [2021-10-21 19:13:07,079 INFO L793 eck$LassoCheckResult]: Loop: 30#L664-1true assume !false; 84#L534true start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 32#L369true assume !true; 8#L385true start_simulation_~kernel_st~0 := 2; 22#L540true assume !(1 == ~c_req_up~0); 42#L540-2true start_simulation_~kernel_st~0 := 3; 40#L552true assume !(0 == ~e_f~0); 56#L552-2true assume 0 == ~e_g~0;~e_g~0 := 1; 79#L557-1true assume 0 == ~e_e~0;~e_e~0 := 1; 118#L562-1true assume 0 == ~e_c~0;~e_c~0 := 1; 85#L567-1true assume 0 == ~e_wl~0;~e_wl~0 := 1; 78#L572-1true assume !(1 == ~wl_pc~0); 53#L584true assume !(2 == ~wl_pc~0); 73#L585true assume !(1 == ~c1_pc~0); 125#L595true assume !(1 == ~c2_pc~0); 46#L604true assume !(1 == ~wb_pc~0); 37#L613true assume 1 == ~e_c~0;~r_st~0 := 0; 31#L622-1true assume !(1 == ~e_e~0); 92#L627-1true assume 1 == ~e_f~0;~e_f~0 := 2; 18#L632-1true assume 1 == ~e_g~0;~e_g~0 := 2; 64#L637-1true assume 1 == ~e_c~0;~e_c~0 := 2; 89#L642-1true assume 1 == ~e_wl~0;~e_wl~0 := 2; 21#L647-1true assume 0 == ~wl_st~0; 30#L664-1true [2021-10-21 19:13:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2133486251, now seen corresponding path program 1 times [2021-10-21 19:13:07,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901238958] [2021-10-21 19:13:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,292 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 19:13:07,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901238958] [2021-10-21 19:13:07,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901238958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:07,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147458962] [2021-10-21 19:13:07,301 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,302 INFO L82 PathProgramCache]: Analyzing trace with hash 25607920, now seen corresponding path program 1 times [2021-10-21 19:13:07,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070114708] [2021-10-21 19:13:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,332 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 19:13:07,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070114708] [2021-10-21 19:13:07,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070114708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:13:07,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859258058] [2021-10-21 19:13:07,335 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:07,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:13:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:13:07,351 INFO L87 Difference]: Start difference. First operand has 124 states, 123 states have (on average 1.8699186991869918) internal successors, (230), 123 states have internal predecessors, (230), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 19:13:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:07,367 INFO L93 Difference]: Finished difference Result 124 states and 217 transitions. [2021-10-21 19:13:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:13:07,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 217 transitions. [2021-10-21 19:13:07,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 119 states and 212 transitions. [2021-10-21 19:13:07,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 119 [2021-10-21 19:13:07,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2021-10-21 19:13:07,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 212 transitions. [2021-10-21 19:13:07,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:13:07,388 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 212 transitions. [2021-10-21 19:13:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 212 transitions. [2021-10-21 19:13:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-21 19:13:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 119 states have (on average 1.781512605042017) internal successors, (212), 118 states have internal predecessors, (212), 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 19:13:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 212 transitions. [2021-10-21 19:13:07,426 INFO L704 BuchiCegarLoop]: Abstraction has 119 states and 212 transitions. [2021-10-21 19:13:07,426 INFO L587 BuchiCegarLoop]: Abstraction has 119 states and 212 transitions. [2021-10-21 19:13:07,426 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:13:07,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119 states and 212 transitions. [2021-10-21 19:13:07,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,433 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:07,433 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:07,435 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,435 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,435 INFO L791 eck$LassoCheckResult]: Stem: 375#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 318#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 319#L396 assume !(1 == ~c_req_up~0); 271#L396-2 assume !(1 == ~wl_i~0);~wl_st~0 := 2; 299#L407-1 assume !(1 == ~c1_i~0);~c1_st~0 := 2; 366#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 367#L417-1 assume !(1 == ~wb_i~0);~wb_st~0 := 2; 343#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 344#L427-1 assume !(0 == ~e_f~0); 348#L432-1 assume !(0 == ~e_g~0); 300#L437-1 assume !(0 == ~e_e~0); 301#L442-1 assume !(0 == ~e_c~0); 317#L447-1 assume !(0 == ~e_wl~0); 305#L452-1 assume !(1 == ~wl_pc~0); 306#L464 assume !(2 == ~wl_pc~0); 371#L465 assume !(1 == ~c1_pc~0); 323#L475 assume !(1 == ~c2_pc~0); 354#L484 assume !(1 == ~wb_pc~0); 268#L493 assume !(1 == ~e_c~0); 269#L502-1 assume !(1 == ~e_e~0); 282#L507-1 assume !(1 == ~e_f~0); 283#L512-1 assume !(1 == ~e_g~0); 287#L517-1 assume !(1 == ~e_c~0); 272#L522-1 assume !(1 == ~e_wl~0); 273#L664-1 [2021-10-21 19:13:07,436 INFO L793 eck$LassoCheckResult]: Loop: 273#L664-1 assume !false; 308#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 311#L369 assume !false; 312#L287 assume !(0 == ~wl_st~0); 347#L291 assume !(0 == ~c1_st~0); 356#L294 assume !(0 == ~c2_st~0); 302#L297 assume !(0 == ~wb_st~0); 304#L300 assume !(0 == ~r_st~0); 266#L385 start_simulation_~kernel_st~0 := 2; 267#L540 assume !(1 == ~c_req_up~0); 278#L540-2 start_simulation_~kernel_st~0 := 3; 320#L552 assume !(0 == ~e_f~0); 321#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 341#L557-1 assume 0 == ~e_e~0;~e_e~0 := 1; 360#L562-1 assume 0 == ~e_c~0;~e_c~0 := 1; 364#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 358#L572-1 assume 1 == ~wl_pc~0; 327#L578 assume 1 == ~e_wl~0;~wl_st~0 := 0; 329#L585 assume !(1 == ~c1_pc~0); 325#L595 assume !(1 == ~c2_pc~0); 330#L604 assume !(1 == ~wb_pc~0); 315#L613 assume 1 == ~e_c~0;~r_st~0 := 0; 309#L622-1 assume !(1 == ~e_e~0); 310#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 285#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 286#L637-1 assume 1 == ~e_c~0;~e_c~0 := 2; 349#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 291#L647-1 assume 0 == ~wl_st~0; 273#L664-1 [2021-10-21 19:13:07,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2133486251, now seen corresponding path program 2 times [2021-10-21 19:13:07,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523171552] [2021-10-21 19:13:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,488 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 19:13:07,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523171552] [2021-10-21 19:13:07,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523171552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:07,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902512799] [2021-10-21 19:13:07,490 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:07,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2092883469, now seen corresponding path program 1 times [2021-10-21 19:13:07,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565846937] [2021-10-21 19:13:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,540 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 19:13:07,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565846937] [2021-10-21 19:13:07,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565846937] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:07,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176339334] [2021-10-21 19:13:07,549 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:07,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:07,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:07,555 INFO L87 Difference]: Start difference. First operand 119 states and 212 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:13:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:07,583 INFO L93 Difference]: Finished difference Result 119 states and 211 transitions. [2021-10-21 19:13:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:07,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 211 transitions. [2021-10-21 19:13:07,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,593 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 119 states and 211 transitions. [2021-10-21 19:13:07,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 119 [2021-10-21 19:13:07,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2021-10-21 19:13:07,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 211 transitions. [2021-10-21 19:13:07,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:13:07,596 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 211 transitions. [2021-10-21 19:13:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 211 transitions. [2021-10-21 19:13:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-21 19:13:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 119 states have (on average 1.773109243697479) internal successors, (211), 118 states have internal predecessors, (211), 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 19:13:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 211 transitions. [2021-10-21 19:13:07,610 INFO L704 BuchiCegarLoop]: Abstraction has 119 states and 211 transitions. [2021-10-21 19:13:07,610 INFO L587 BuchiCegarLoop]: Abstraction has 119 states and 211 transitions. [2021-10-21 19:13:07,610 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:13:07,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119 states and 211 transitions. [2021-10-21 19:13:07,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:07,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:07,614 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,614 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,614 INFO L791 eck$LassoCheckResult]: Stem: 620#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 563#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 564#L396 assume !(1 == ~c_req_up~0); 516#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 544#L407-1 assume !(1 == ~c1_i~0);~c1_st~0 := 2; 611#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 612#L417-1 assume !(1 == ~wb_i~0);~wb_st~0 := 2; 588#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 589#L427-1 assume !(0 == ~e_f~0); 593#L432-1 assume !(0 == ~e_g~0); 545#L437-1 assume !(0 == ~e_e~0); 546#L442-1 assume !(0 == ~e_c~0); 562#L447-1 assume !(0 == ~e_wl~0); 550#L452-1 assume !(1 == ~wl_pc~0); 551#L464 assume !(2 == ~wl_pc~0); 616#L465 assume !(1 == ~c1_pc~0); 568#L475 assume !(1 == ~c2_pc~0); 599#L484 assume !(1 == ~wb_pc~0); 513#L493 assume !(1 == ~e_c~0); 514#L502-1 assume !(1 == ~e_e~0); 527#L507-1 assume !(1 == ~e_f~0); 528#L512-1 assume !(1 == ~e_g~0); 532#L517-1 assume !(1 == ~e_c~0); 517#L522-1 assume !(1 == ~e_wl~0); 518#L664-1 [2021-10-21 19:13:07,614 INFO L793 eck$LassoCheckResult]: Loop: 518#L664-1 assume !false; 553#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 556#L369 assume !false; 557#L287 assume !(0 == ~wl_st~0); 592#L291 assume !(0 == ~c1_st~0); 601#L294 assume !(0 == ~c2_st~0); 547#L297 assume !(0 == ~wb_st~0); 549#L300 assume !(0 == ~r_st~0); 511#L385 start_simulation_~kernel_st~0 := 2; 512#L540 assume !(1 == ~c_req_up~0); 523#L540-2 start_simulation_~kernel_st~0 := 3; 565#L552 assume !(0 == ~e_f~0); 566#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 586#L557-1 assume 0 == ~e_e~0;~e_e~0 := 1; 605#L562-1 assume 0 == ~e_c~0;~e_c~0 := 1; 609#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 603#L572-1 assume 1 == ~wl_pc~0; 572#L578 assume 1 == ~e_wl~0;~wl_st~0 := 0; 574#L585 assume !(1 == ~c1_pc~0); 570#L595 assume !(1 == ~c2_pc~0); 575#L604 assume !(1 == ~wb_pc~0); 560#L613 assume 1 == ~e_c~0;~r_st~0 := 0; 554#L622-1 assume !(1 == ~e_e~0); 555#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 530#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 531#L637-1 assume 1 == ~e_c~0;~e_c~0 := 2; 594#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 536#L647-1 assume 0 == ~wl_st~0; 518#L664-1 [2021-10-21 19:13:07,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1738779219, now seen corresponding path program 1 times [2021-10-21 19:13:07,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935132998] [2021-10-21 19:13:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,676 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 19:13:07,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935132998] [2021-10-21 19:13:07,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935132998] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:07,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404012250] [2021-10-21 19:13:07,678 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:07,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2092883469, now seen corresponding path program 2 times [2021-10-21 19:13:07,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562171311] [2021-10-21 19:13:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,718 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 19:13:07,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562171311] [2021-10-21 19:13:07,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562171311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:07,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838288811] [2021-10-21 19:13:07,725 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:07,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:07,728 INFO L87 Difference]: Start difference. First operand 119 states and 211 transitions. cyclomatic complexity: 93 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:13:07,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:07,751 INFO L93 Difference]: Finished difference Result 119 states and 210 transitions. [2021-10-21 19:13:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:07,752 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 210 transitions. [2021-10-21 19:13:07,755 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 119 states and 210 transitions. [2021-10-21 19:13:07,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 119 [2021-10-21 19:13:07,759 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2021-10-21 19:13:07,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 210 transitions. [2021-10-21 19:13:07,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:13:07,764 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 210 transitions. [2021-10-21 19:13:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 210 transitions. [2021-10-21 19:13:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-21 19:13:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 118 states have internal predecessors, (210), 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 19:13:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 210 transitions. [2021-10-21 19:13:07,776 INFO L704 BuchiCegarLoop]: Abstraction has 119 states and 210 transitions. [2021-10-21 19:13:07,776 INFO L587 BuchiCegarLoop]: Abstraction has 119 states and 210 transitions. [2021-10-21 19:13:07,776 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:13:07,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119 states and 210 transitions. [2021-10-21 19:13:07,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:07,784 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:07,789 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,789 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,790 INFO L791 eck$LassoCheckResult]: Stem: 865#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 808#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 809#L396 assume !(1 == ~c_req_up~0); 761#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 789#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 856#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 857#L417-1 assume !(1 == ~wb_i~0);~wb_st~0 := 2; 833#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 834#L427-1 assume !(0 == ~e_f~0); 838#L432-1 assume !(0 == ~e_g~0); 790#L437-1 assume !(0 == ~e_e~0); 791#L442-1 assume !(0 == ~e_c~0); 807#L447-1 assume !(0 == ~e_wl~0); 795#L452-1 assume !(1 == ~wl_pc~0); 796#L464 assume !(2 == ~wl_pc~0); 861#L465 assume !(1 == ~c1_pc~0); 813#L475 assume !(1 == ~c2_pc~0); 844#L484 assume !(1 == ~wb_pc~0); 758#L493 assume !(1 == ~e_c~0); 759#L502-1 assume !(1 == ~e_e~0); 772#L507-1 assume !(1 == ~e_f~0); 773#L512-1 assume !(1 == ~e_g~0); 777#L517-1 assume !(1 == ~e_c~0); 762#L522-1 assume !(1 == ~e_wl~0); 763#L664-1 [2021-10-21 19:13:07,790 INFO L793 eck$LassoCheckResult]: Loop: 763#L664-1 assume !false; 798#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 801#L369 assume !false; 802#L287 assume !(0 == ~wl_st~0); 837#L291 assume !(0 == ~c1_st~0); 846#L294 assume !(0 == ~c2_st~0); 792#L297 assume !(0 == ~wb_st~0); 794#L300 assume !(0 == ~r_st~0); 756#L385 start_simulation_~kernel_st~0 := 2; 757#L540 assume !(1 == ~c_req_up~0); 768#L540-2 start_simulation_~kernel_st~0 := 3; 810#L552 assume !(0 == ~e_f~0); 811#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 831#L557-1 assume 0 == ~e_e~0;~e_e~0 := 1; 850#L562-1 assume 0 == ~e_c~0;~e_c~0 := 1; 854#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 848#L572-1 assume 1 == ~wl_pc~0; 817#L578 assume 1 == ~e_wl~0;~wl_st~0 := 0; 819#L585 assume !(1 == ~c1_pc~0); 815#L595 assume !(1 == ~c2_pc~0); 820#L604 assume !(1 == ~wb_pc~0); 805#L613 assume 1 == ~e_c~0;~r_st~0 := 0; 799#L622-1 assume !(1 == ~e_e~0); 800#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 775#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 776#L637-1 assume 1 == ~e_c~0;~e_c~0 := 2; 839#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 781#L647-1 assume 0 == ~wl_st~0; 763#L664-1 [2021-10-21 19:13:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1738539627, now seen corresponding path program 1 times [2021-10-21 19:13:07,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801690068] [2021-10-21 19:13:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,877 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 19:13:07,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801690068] [2021-10-21 19:13:07,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801690068] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:07,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720894189] [2021-10-21 19:13:07,879 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2092883469, now seen corresponding path program 3 times [2021-10-21 19:13:07,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549637170] [2021-10-21 19:13:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:07,907 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 19:13:07,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:07,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549637170] [2021-10-21 19:13:07,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549637170] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:07,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:07,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:07,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209315307] [2021-10-21 19:13:07,909 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:07,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:07,910 INFO L87 Difference]: Start difference. First operand 119 states and 210 transitions. cyclomatic complexity: 92 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:13:07,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:07,922 INFO L93 Difference]: Finished difference Result 119 states and 209 transitions. [2021-10-21 19:13:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:07,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 209 transitions. [2021-10-21 19:13:07,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 119 states and 209 transitions. [2021-10-21 19:13:07,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 119 [2021-10-21 19:13:07,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2021-10-21 19:13:07,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 209 transitions. [2021-10-21 19:13:07,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:13:07,928 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 209 transitions. [2021-10-21 19:13:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 209 transitions. [2021-10-21 19:13:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-21 19:13:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 119 states have (on average 1.7563025210084033) internal successors, (209), 118 states have internal predecessors, (209), 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 19:13:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 209 transitions. [2021-10-21 19:13:07,935 INFO L704 BuchiCegarLoop]: Abstraction has 119 states and 209 transitions. [2021-10-21 19:13:07,936 INFO L587 BuchiCegarLoop]: Abstraction has 119 states and 209 transitions. [2021-10-21 19:13:07,943 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:13:07,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119 states and 209 transitions. [2021-10-21 19:13:07,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-10-21 19:13:07,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:07,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:07,947 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,948 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:07,950 INFO L791 eck$LassoCheckResult]: Stem: 1110#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 1053#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 1054#L396 assume !(1 == ~c_req_up~0); 1006#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 1034#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 1101#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 1102#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 1078#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 1079#L427-1 assume !(0 == ~e_f~0); 1083#L432-1 assume !(0 == ~e_g~0); 1035#L437-1 assume !(0 == ~e_e~0); 1036#L442-1 assume !(0 == ~e_c~0); 1052#L447-1 assume !(0 == ~e_wl~0); 1040#L452-1 assume !(1 == ~wl_pc~0); 1041#L464 assume !(2 == ~wl_pc~0); 1106#L465 assume !(1 == ~c1_pc~0); 1058#L475 assume !(1 == ~c2_pc~0); 1089#L484 assume !(1 == ~wb_pc~0); 1003#L493 assume !(1 == ~e_c~0); 1004#L502-1 assume !(1 == ~e_e~0); 1017#L507-1 assume !(1 == ~e_f~0); 1018#L512-1 assume !(1 == ~e_g~0); 1022#L517-1 assume !(1 == ~e_c~0); 1007#L522-1 assume !(1 == ~e_wl~0); 1008#L664-1 [2021-10-21 19:13:07,950 INFO L793 eck$LassoCheckResult]: Loop: 1008#L664-1 assume !false; 1043#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 1046#L369 assume !false; 1047#L287 assume !(0 == ~wl_st~0); 1082#L291 assume !(0 == ~c1_st~0); 1091#L294 assume !(0 == ~c2_st~0); 1037#L297 assume !(0 == ~wb_st~0); 1039#L300 assume !(0 == ~r_st~0); 1001#L385 start_simulation_~kernel_st~0 := 2; 1002#L540 assume !(1 == ~c_req_up~0); 1013#L540-2 start_simulation_~kernel_st~0 := 3; 1055#L552 assume !(0 == ~e_f~0); 1056#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 1076#L557-1 assume 0 == ~e_e~0;~e_e~0 := 1; 1095#L562-1 assume 0 == ~e_c~0;~e_c~0 := 1; 1099#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 1093#L572-1 assume 1 == ~wl_pc~0; 1062#L578 assume 1 == ~e_wl~0;~wl_st~0 := 0; 1064#L585 assume !(1 == ~c1_pc~0); 1060#L595 assume !(1 == ~c2_pc~0); 1065#L604 assume !(1 == ~wb_pc~0); 1050#L613 assume 1 == ~e_c~0;~r_st~0 := 0; 1044#L622-1 assume !(1 == ~e_e~0); 1045#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 1020#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 1021#L637-1 assume 1 == ~e_c~0;~e_c~0 := 2; 1084#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 1026#L647-1 assume 0 == ~wl_st~0; 1008#L664-1 [2021-10-21 19:13:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash 255605079, now seen corresponding path program 1 times [2021-10-21 19:13:07,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:07,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567935370] [2021-10-21 19:13:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:07,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:07,972 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:08,027 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2092883469, now seen corresponding path program 4 times [2021-10-21 19:13:08,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:08,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031991750] [2021-10-21 19:13:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:08,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:08,053 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 19:13:08,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:08,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031991750] [2021-10-21 19:13:08,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031991750] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:08,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:08,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:08,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637507058] [2021-10-21 19:13:08,055 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:08,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:08,056 INFO L87 Difference]: Start difference. First operand 119 states and 209 transitions. cyclomatic complexity: 91 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 19:13:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:08,095 INFO L93 Difference]: Finished difference Result 147 states and 260 transitions. [2021-10-21 19:13:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:08,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 147 states and 260 transitions. [2021-10-21 19:13:08,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 102 [2021-10-21 19:13:08,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 147 states to 147 states and 260 transitions. [2021-10-21 19:13:08,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2021-10-21 19:13:08,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 147 [2021-10-21 19:13:08,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 147 states and 260 transitions. [2021-10-21 19:13:08,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:13:08,101 INFO L681 BuchiCegarLoop]: Abstraction has 147 states and 260 transitions. [2021-10-21 19:13:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states and 260 transitions. [2021-10-21 19:13:08,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-10-21 19:13:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 147 states have (on average 1.7687074829931972) internal successors, (260), 146 states have internal predecessors, (260), 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 19:13:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 260 transitions. [2021-10-21 19:13:08,109 INFO L704 BuchiCegarLoop]: Abstraction has 147 states and 260 transitions. [2021-10-21 19:13:08,109 INFO L587 BuchiCegarLoop]: Abstraction has 147 states and 260 transitions. [2021-10-21 19:13:08,109 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:13:08,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 147 states and 260 transitions. [2021-10-21 19:13:08,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 102 [2021-10-21 19:13:08,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:08,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:08,112 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:08,112 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:08,113 INFO L791 eck$LassoCheckResult]: Stem: 1385#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 1326#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 1327#L396 assume !(1 == ~c_req_up~0); 1278#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 1306#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 1376#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 1377#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 1351#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 1352#L427-1 assume !(0 == ~e_f~0); 1356#L432-1 assume !(0 == ~e_g~0); 1307#L437-1 assume 0 == ~e_e~0;~e_e~0 := 1; 1308#L442-1 assume !(0 == ~e_c~0); 1410#L447-1 assume !(0 == ~e_wl~0); 1409#L452-1 assume !(1 == ~wl_pc~0); 1408#L464 assume !(2 == ~wl_pc~0); 1387#L465 assume !(1 == ~c1_pc~0); 1361#L475 assume !(1 == ~c2_pc~0); 1363#L484 assume !(1 == ~wb_pc~0); 1275#L493 assume !(1 == ~e_c~0); 1276#L502-1 assume 1 == ~e_e~0;~e_e~0 := 2; 1289#L507-1 assume !(1 == ~e_f~0); 1290#L512-1 assume !(1 == ~e_g~0); 1294#L517-1 assume !(1 == ~e_c~0); 1279#L522-1 assume !(1 == ~e_wl~0); 1280#L664-1 [2021-10-21 19:13:08,113 INFO L793 eck$LassoCheckResult]: Loop: 1280#L664-1 assume !false; 1316#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 1319#L369 assume !false; 1320#L287 assume !(0 == ~wl_st~0); 1355#L291 assume !(0 == ~c1_st~0); 1365#L294 assume !(0 == ~c2_st~0); 1310#L297 assume !(0 == ~wb_st~0); 1312#L300 assume !(0 == ~r_st~0); 1273#L385 start_simulation_~kernel_st~0 := 2; 1274#L540 assume !(1 == ~c_req_up~0); 1285#L540-2 start_simulation_~kernel_st~0 := 3; 1328#L552 assume !(0 == ~e_f~0); 1329#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 1349#L557-1 assume 0 == ~e_e~0;~e_e~0 := 1; 1369#L562-1 assume 0 == ~e_c~0;~e_c~0 := 1; 1374#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 1367#L572-1 assume 1 == ~wl_pc~0; 1335#L578 assume 1 == ~e_wl~0;~wl_st~0 := 0; 1337#L585 assume !(1 == ~c1_pc~0); 1333#L595 assume !(1 == ~c2_pc~0); 1338#L604 assume !(1 == ~wb_pc~0); 1323#L613 assume 1 == ~e_c~0;~r_st~0 := 0; 1317#L622-1 assume 1 == ~e_e~0;~e_e~0 := 2; 1318#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 1292#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 1293#L637-1 assume 1 == ~e_c~0;~e_c~0 := 2; 1357#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 1298#L647-1 assume 0 == ~wl_st~0; 1280#L664-1 [2021-10-21 19:13:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:08,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1264875287, now seen corresponding path program 1 times [2021-10-21 19:13:08,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:08,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872162239] [2021-10-21 19:13:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:08,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:08,151 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 19:13:08,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:08,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872162239] [2021-10-21 19:13:08,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872162239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:08,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:08,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:13:08,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779644587] [2021-10-21 19:13:08,152 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:08,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2144825525, now seen corresponding path program 1 times [2021-10-21 19:13:08,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:08,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854257165] [2021-10-21 19:13:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:08,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:08,160 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:08,173 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:08,506 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:13:08,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:13:08,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:13:08,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:13:08,507 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:13:08,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:08,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:13:08,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:13:08,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: toy2.cil.c_Iteration6_Loop [2021-10-21 19:13:08,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:13:08,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:13:08,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:08,899 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:13:08,899 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:13:08,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:08,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:08,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:08,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:13:08,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:13:08,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:13:08,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:13:08,949 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {~c2_st~0=-1} Honda state: {~c2_st~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:13:08,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-21 19:13:08,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:08,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:09,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:13:09,021 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:13:09,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:13:09,046 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:13:09,047 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_eval_#t~nondet11=0} Honda state: {ULTIMATE.start_eval_#t~nondet11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:13:09,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:09,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:09,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:09,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:09,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:13:09,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:13:09,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:13:09,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-21 19:13:09,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:09,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:09,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:09,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:13:09,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:13:09,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:13:09,226 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:13:09,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:09,260 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:13:09,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:13:09,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:13:09,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:13:09,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:13:09,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:09,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:13:09,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:13:09,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: toy2.cil.c_Iteration6_Loop [2021-10-21 19:13:09,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:13:09,260 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:13:09,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:09,593 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:13:09,597 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:13:09,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:09,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:09,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:09,605 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:13:09,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:09,614 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:09,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:09,615 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:13:09,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:09,617 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:13:09,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:09,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:13:09,634 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:09,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:09,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:09,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:09,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:13:09,667 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:13:09,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:09,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:09,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:09,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:09,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:09,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:09,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:09,678 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:09,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:09,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:09,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:09,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:13:09,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:13:09,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:09,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:09,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:09,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:09,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:09,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:09,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:09,723 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:13:09,730 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:13:09,730 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:13:09,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:09,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:09,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:09,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:13:09,734 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:13:09,734 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:13:09,734 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:13:09,735 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~e_c~0) = -1*~e_c~0 + 1 Supporting invariants [] [2021-10-21 19:13:09,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:09,761 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:13:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:09,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:13:09,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:13:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:09,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:13:09,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:13:10,114 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 19:13:10,117 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-21 19:13:10,118 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 147 states and 260 transitions. cyclomatic complexity: 114 Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 19:13:10,229 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 147 states and 260 transitions. cyclomatic complexity: 114. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) Result 461 states and 811 transitions. Complement of second has 5 states. [2021-10-21 19:13:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 19:13:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 19:13:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2021-10-21 19:13:10,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 364 transitions. Stem has 24 letters. Loop has 28 letters. [2021-10-21 19:13:10,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:13:10,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 364 transitions. Stem has 52 letters. Loop has 28 letters. [2021-10-21 19:13:10,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:13:10,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 364 transitions. Stem has 24 letters. Loop has 56 letters. [2021-10-21 19:13:10,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:13:10,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 461 states and 811 transitions. [2021-10-21 19:13:10,247 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 306 [2021-10-21 19:13:10,254 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 461 states to 461 states and 811 transitions. [2021-10-21 19:13:10,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 352 [2021-10-21 19:13:10,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 356 [2021-10-21 19:13:10,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 461 states and 811 transitions. [2021-10-21 19:13:10,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:10,255 INFO L681 BuchiCegarLoop]: Abstraction has 461 states and 811 transitions. [2021-10-21 19:13:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states and 811 transitions. [2021-10-21 19:13:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 355. [2021-10-21 19:13:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 355 states have (on average 1.763380281690141) internal successors, (626), 354 states have internal predecessors, (626), 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 19:13:10,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-21 19:13:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 626 transitions. [2021-10-21 19:13:10,330 INFO L704 BuchiCegarLoop]: Abstraction has 355 states and 626 transitions. [2021-10-21 19:13:10,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:13:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:13:10,331 INFO L87 Difference]: Start difference. First operand 355 states and 626 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:13:10,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:10,418 INFO L93 Difference]: Finished difference Result 595 states and 1033 transitions. [2021-10-21 19:13:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:13:10,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 595 states and 1033 transitions. [2021-10-21 19:13:10,425 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 340 [2021-10-21 19:13:10,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 595 states to 595 states and 1033 transitions. [2021-10-21 19:13:10,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 409 [2021-10-21 19:13:10,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 409 [2021-10-21 19:13:10,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 595 states and 1033 transitions. [2021-10-21 19:13:10,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:10,432 INFO L681 BuchiCegarLoop]: Abstraction has 595 states and 1033 transitions. [2021-10-21 19:13:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states and 1033 transitions. [2021-10-21 19:13:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 559. [2021-10-21 19:13:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 559 states have (on average 1.7459749552772807) internal successors, (976), 558 states have internal predecessors, (976), 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 19:13:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 976 transitions. [2021-10-21 19:13:10,451 INFO L704 BuchiCegarLoop]: Abstraction has 559 states and 976 transitions. [2021-10-21 19:13:10,452 INFO L587 BuchiCegarLoop]: Abstraction has 559 states and 976 transitions. [2021-10-21 19:13:10,452 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:13:10,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 559 states and 976 transitions. [2021-10-21 19:13:10,455 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 340 [2021-10-21 19:13:10,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:10,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:10,458 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:10,458 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:10,458 INFO L791 eck$LassoCheckResult]: Stem: 3250#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 3116#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 3117#L396 assume !(1 == ~c_req_up~0); 3027#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 3083#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 3228#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 3229#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 3174#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 3175#L427-1 assume !(0 == ~e_f~0); 3183#L432-1 assume !(0 == ~e_g~0); 3084#L437-1 assume !(0 == ~e_e~0); 3085#L442-1 assume !(0 == ~e_c~0); 3115#L447-1 assume !(0 == ~e_wl~0); 3092#L452-1 assume !(1 == ~wl_pc~0); 3093#L464 assume !(2 == ~wl_pc~0); 3241#L465 assume !(1 == ~c1_pc~0); 3280#L475 assume !(1 == ~c2_pc~0); 3278#L484 assume !(1 == ~wb_pc~0); 3276#L493 assume !(1 == ~e_c~0); 3274#L502-1 assume 1 == ~e_e~0;~e_e~0 := 2; 3047#L507-1 assume !(1 == ~e_f~0); 3048#L512-1 assume !(1 == ~e_g~0); 3055#L517-1 assume !(1 == ~e_c~0); 3056#L522-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 3289#L664-1 [2021-10-21 19:13:10,458 INFO L793 eck$LassoCheckResult]: Loop: 3289#L664-1 assume !false; 3485#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 3102#L369 assume !false; 3103#L287 assume !(0 == ~wl_st~0); 3180#L291 assume !(0 == ~c1_st~0); 3203#L294 assume !(0 == ~c2_st~0); 3086#L297 assume !(0 == ~wb_st~0); 3088#L300 assume !(0 == ~r_st~0); 3447#L385 start_simulation_~kernel_st~0 := 2; 3377#L540 assume !(1 == ~c_req_up~0); 3374#L540-2 start_simulation_~kernel_st~0 := 3; 3372#L552 assume !(0 == ~e_f~0); 3369#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 3368#L557-1 assume !(0 == ~e_e~0); 3359#L562-1 assume 0 == ~e_c~0;~e_c~0 := 1; 3357#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 3358#L572-1 assume !(1 == ~wl_pc~0); 3351#L584 assume !(2 == ~wl_pc~0); 3348#L585 assume !(1 == ~c1_pc~0); 3344#L595 assume !(1 == ~c2_pc~0); 3340#L604 assume !(1 == ~wb_pc~0); 3337#L613 assume 1 == ~e_c~0;~r_st~0 := 0; 3335#L622-1 assume !(1 == ~e_e~0); 3334#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 3333#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 3332#L637-1 assume 1 == ~e_c~0;~e_c~0 := 2; 3230#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 3231#L647-1 assume 0 == ~wl_st~0; 3289#L664-1 [2021-10-21 19:13:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:10,459 INFO L82 PathProgramCache]: Analyzing trace with hash 253758035, now seen corresponding path program 1 times [2021-10-21 19:13:10,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:10,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207478049] [2021-10-21 19:13:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:10,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:10,521 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 19:13:10,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:10,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207478049] [2021-10-21 19:13:10,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207478049] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:10,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:10,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:13:10,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75254052] [2021-10-21 19:13:10,523 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:10,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1471479870, now seen corresponding path program 1 times [2021-10-21 19:13:10,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:10,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154977027] [2021-10-21 19:13:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:10,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:10,542 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 19:13:10,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:10,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154977027] [2021-10-21 19:13:10,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154977027] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:10,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:10,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:13:10,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377916995] [2021-10-21 19:13:10,543 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:10,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:10,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:13:10,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:13:10,544 INFO L87 Difference]: Start difference. First operand 559 states and 976 transitions. cyclomatic complexity: 423 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:13:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:10,608 INFO L93 Difference]: Finished difference Result 1029 states and 1741 transitions. [2021-10-21 19:13:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:13:10,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1029 states and 1741 transitions. [2021-10-21 19:13:10,618 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 638 [2021-10-21 19:13:10,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1029 states to 1029 states and 1741 transitions. [2021-10-21 19:13:10,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 706 [2021-10-21 19:13:10,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 706 [2021-10-21 19:13:10,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1029 states and 1741 transitions. [2021-10-21 19:13:10,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:10,630 INFO L681 BuchiCegarLoop]: Abstraction has 1029 states and 1741 transitions. [2021-10-21 19:13:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states and 1741 transitions. [2021-10-21 19:13:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1029. [2021-10-21 19:13:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1029 states have (on average 1.6919339164237124) internal successors, (1741), 1028 states have internal predecessors, (1741), 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 19:13:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1741 transitions. [2021-10-21 19:13:10,658 INFO L704 BuchiCegarLoop]: Abstraction has 1029 states and 1741 transitions. [2021-10-21 19:13:10,658 INFO L587 BuchiCegarLoop]: Abstraction has 1029 states and 1741 transitions. [2021-10-21 19:13:10,658 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:13:10,658 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1029 states and 1741 transitions. [2021-10-21 19:13:10,664 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 638 [2021-10-21 19:13:10,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:10,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:10,665 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:10,665 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:10,666 INFO L791 eck$LassoCheckResult]: Stem: 4872#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 4719#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 4720#L396 assume !(1 == ~c_req_up~0); 4626#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 4848#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 4849#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 4871#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 4772#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 4773#L427-1 assume !(0 == ~e_f~0); 4785#L432-1 assume !(0 == ~e_g~0); 4801#L437-1 assume !(0 == ~e_e~0); 4896#L442-1 assume 0 == ~e_c~0;~e_c~0 := 1; 4718#L447-1 assume !(0 == ~e_wl~0); 4694#L452-1 assume !(1 == ~wl_pc~0); 4695#L464 assume !(2 == ~wl_pc~0); 4894#L465 assume !(1 == ~c1_pc~0); 4892#L475 assume !(1 == ~c2_pc~0); 4873#L484 assume !(1 == ~wb_pc~0); 4804#L493 assume !(1 == ~e_c~0); 4889#L502-1 assume !(1 == ~e_e~0); 4646#L507-1 assume 1 == ~e_f~0;~e_f~0 := 2; 4647#L512-1 assume !(1 == ~e_g~0); 4656#L517-1 assume !(1 == ~e_c~0); 4627#L522-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 4628#L664-1 [2021-10-21 19:13:10,666 INFO L793 eck$LassoCheckResult]: Loop: 4628#L664-1 assume !false; 5503#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 5187#L369 assume !false; 5501#L287 assume !(0 == ~wl_st~0); 5500#L291 assume !(0 == ~c1_st~0); 5499#L294 assume !(0 == ~c2_st~0); 5498#L297 assume !(0 == ~wb_st~0); 5146#L300 assume !(0 == ~r_st~0); 5141#L385 start_simulation_~kernel_st~0 := 2; 5142#L540 assume !(1 == ~c_req_up~0); 5481#L540-2 start_simulation_~kernel_st~0 := 3; 5480#L552 assume !(0 == ~e_f~0); 5479#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 5476#L557-1 assume !(0 == ~e_e~0); 5116#L562-1 assume 0 == ~e_c~0;~e_c~0 := 1; 5117#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 5475#L572-1 assume !(1 == ~wl_pc~0); 5462#L584 assume !(2 == ~wl_pc~0); 5455#L585 assume !(1 == ~c1_pc~0); 5449#L595 assume !(1 == ~c2_pc~0); 5443#L604 assume !(1 == ~wb_pc~0); 5438#L613 assume 1 == ~e_c~0;~r_st~0 := 0; 5435#L622-1 assume !(1 == ~e_e~0); 5428#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 5426#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 5423#L637-1 assume 1 == ~e_c~0;~e_c~0 := 2; 5424#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 5549#L647-1 assume 0 == ~wl_st~0; 4628#L664-1 [2021-10-21 19:13:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash 842351509, now seen corresponding path program 1 times [2021-10-21 19:13:10,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:10,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067279773] [2021-10-21 19:13:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:10,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:10,694 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 19:13:10,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:10,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067279773] [2021-10-21 19:13:10,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067279773] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:10,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:10,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:13:10,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713374544] [2021-10-21 19:13:10,695 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:10,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1471479870, now seen corresponding path program 2 times [2021-10-21 19:13:10,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:10,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738856045] [2021-10-21 19:13:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:10,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:10,720 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 19:13:10,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:10,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738856045] [2021-10-21 19:13:10,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738856045] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:10,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:10,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:13:10,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213410492] [2021-10-21 19:13:10,724 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:10,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:13:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:13:10,725 INFO L87 Difference]: Start difference. First operand 1029 states and 1741 transitions. cyclomatic complexity: 724 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:13:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:10,816 INFO L93 Difference]: Finished difference Result 1300 states and 2165 transitions. [2021-10-21 19:13:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:13:10,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1300 states and 2165 transitions. [2021-10-21 19:13:10,854 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 808 [2021-10-21 19:13:10,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1300 states to 1300 states and 2165 transitions. [2021-10-21 19:13:10,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 892 [2021-10-21 19:13:10,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 892 [2021-10-21 19:13:10,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1300 states and 2165 transitions. [2021-10-21 19:13:10,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:10,869 INFO L681 BuchiCegarLoop]: Abstraction has 1300 states and 2165 transitions. [2021-10-21 19:13:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states and 2165 transitions. [2021-10-21 19:13:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1276. [2021-10-21 19:13:10,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1276 states have (on average 1.6778996865203761) internal successors, (2141), 1275 states have internal predecessors, (2141), 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 19:13:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2141 transitions. [2021-10-21 19:13:10,904 INFO L704 BuchiCegarLoop]: Abstraction has 1276 states and 2141 transitions. [2021-10-21 19:13:10,905 INFO L587 BuchiCegarLoop]: Abstraction has 1276 states and 2141 transitions. [2021-10-21 19:13:10,905 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 19:13:10,905 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1276 states and 2141 transitions. [2021-10-21 19:13:10,912 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 808 [2021-10-21 19:13:10,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:10,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:10,914 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:10,914 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:10,916 INFO L791 eck$LassoCheckResult]: Stem: 7200#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 7060#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 7061#L396 assume !(1 == ~c_req_up~0); 6965#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 7177#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 7178#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 7220#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 7218#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 7217#L427-1 assume !(0 == ~e_f~0); 7216#L432-1 assume !(0 == ~e_g~0); 7025#L437-1 assume !(0 == ~e_e~0); 7026#L442-1 assume !(0 == ~e_c~0); 7059#L447-1 assume !(0 == ~e_wl~0); 7183#L452-1 assume !(1 == ~wl_pc~0); 7186#L464 assume !(2 == ~wl_pc~0); 7185#L465 assume !(1 == ~c1_pc~0); 7067#L475 assume !(1 == ~c2_pc~0); 7135#L484 assume !(1 == ~wb_pc~0); 6962#L493 assume !(1 == ~e_c~0); 6963#L502-1 assume !(1 == ~e_e~0); 6989#L507-1 assume 1 == ~e_f~0;~e_f~0 := 2; 6990#L512-1 assume !(1 == ~e_g~0); 6996#L517-1 assume !(1 == ~e_c~0); 6997#L522-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 7498#L664-1 [2021-10-21 19:13:10,916 INFO L793 eck$LassoCheckResult]: Loop: 7498#L664-1 assume !false; 7905#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 7610#L369 assume !false; 7900#L287 assume !(0 == ~wl_st~0); 7901#L291 assume !(0 == ~c1_st~0); 7903#L294 assume !(0 == ~c2_st~0); 7898#L297 assume !(0 == ~wb_st~0); 7899#L300 assume !(0 == ~r_st~0); 7902#L385 start_simulation_~kernel_st~0 := 2; 7934#L540 assume !(1 == ~c_req_up~0); 7932#L540-2 start_simulation_~kernel_st~0 := 3; 7931#L552 assume !(0 == ~e_f~0); 7930#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 7929#L557-1 assume !(0 == ~e_e~0); 7928#L562-1 assume !(0 == ~e_c~0); 7927#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 7926#L572-1 assume !(1 == ~wl_pc~0); 7923#L584 assume !(2 == ~wl_pc~0); 7922#L585 assume !(1 == ~c1_pc~0); 7920#L595 assume !(1 == ~c2_pc~0); 7918#L604 assume !(1 == ~wb_pc~0); 7916#L613 assume !(1 == ~e_c~0); 7915#L622-1 assume !(1 == ~e_e~0); 7914#L627-1 assume 1 == ~e_f~0;~e_f~0 := 2; 7775#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 7913#L637-1 assume !(1 == ~e_c~0); 7911#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 7910#L647-1 assume 0 == ~wl_st~0; 7498#L664-1 [2021-10-21 19:13:10,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:10,917 INFO L82 PathProgramCache]: Analyzing trace with hash 255545495, now seen corresponding path program 1 times [2021-10-21 19:13:10,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:10,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886847530] [2021-10-21 19:13:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:10,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:10,960 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 19:13:10,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:10,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886847530] [2021-10-21 19:13:10,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886847530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:10,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:10,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:13:10,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374270673] [2021-10-21 19:13:10,962 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2059595392, now seen corresponding path program 1 times [2021-10-21 19:13:10,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:10,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419651977] [2021-10-21 19:13:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:10,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:10,991 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 19:13:10,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:10,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419651977] [2021-10-21 19:13:10,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419651977] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:10,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:10,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:13:10,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050874326] [2021-10-21 19:13:10,994 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:10,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:10,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:13:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:13:10,995 INFO L87 Difference]: Start difference. First operand 1276 states and 2141 transitions. cyclomatic complexity: 880 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:13:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:11,076 INFO L93 Difference]: Finished difference Result 1415 states and 2300 transitions. [2021-10-21 19:13:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:13:11,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1415 states and 2300 transitions. [2021-10-21 19:13:11,089 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 891 [2021-10-21 19:13:11,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1415 states to 1415 states and 2300 transitions. [2021-10-21 19:13:11,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 967 [2021-10-21 19:13:11,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 967 [2021-10-21 19:13:11,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1415 states and 2300 transitions. [2021-10-21 19:13:11,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:11,104 INFO L681 BuchiCegarLoop]: Abstraction has 1415 states and 2300 transitions. [2021-10-21 19:13:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states and 2300 transitions. [2021-10-21 19:13:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1385. [2021-10-21 19:13:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1385 states have (on average 1.6389891696750902) internal successors, (2270), 1384 states have internal predecessors, (2270), 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 19:13:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2270 transitions. [2021-10-21 19:13:11,141 INFO L704 BuchiCegarLoop]: Abstraction has 1385 states and 2270 transitions. [2021-10-21 19:13:11,141 INFO L587 BuchiCegarLoop]: Abstraction has 1385 states and 2270 transitions. [2021-10-21 19:13:11,141 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-21 19:13:11,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1385 states and 2270 transitions. [2021-10-21 19:13:11,149 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 887 [2021-10-21 19:13:11,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:11,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:11,150 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:11,150 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:11,150 INFO L791 eck$LassoCheckResult]: Stem: 9901#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 9760#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 9761#L396 assume !(1 == ~c_req_up~0); 9724#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 9725#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 9868#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 9869#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 9896#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 9920#L427-1 assume !(0 == ~e_f~0); 9919#L432-1 assume !(0 == ~e_g~0); 9726#L437-1 assume !(0 == ~e_e~0); 9727#L442-1 assume !(0 == ~e_c~0); 9759#L447-1 assume !(0 == ~e_wl~0); 9884#L452-1 assume !(1 == ~wl_pc~0); 9927#L464 assume !(2 == ~wl_pc~0); 9906#L465 assume !(1 == ~c1_pc~0); 9767#L475 assume !(1 == ~c2_pc~0); 9838#L484 assume !(1 == ~wb_pc~0); 9666#L493 assume !(1 == ~e_c~0); 9667#L502-1 assume !(1 == ~e_e~0); 9689#L507-1 assume !(1 == ~e_f~0); 9690#L512-1 assume !(1 == ~e_g~0); 9698#L517-1 assume !(1 == ~e_c~0); 9699#L522-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 10165#L664-1 [2021-10-21 19:13:11,151 INFO L793 eck$LassoCheckResult]: Loop: 10165#L664-1 assume !false; 10447#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 9804#L369 assume !false; 9822#L287 assume !(0 == ~wl_st~0); 9823#L291 assume !(0 == ~c1_st~0); 9844#L294 assume !(0 == ~c2_st~0); 9728#L297 assume !(0 == ~wb_st~0); 9730#L300 assume !(0 == ~r_st~0); 9662#L385 start_simulation_~kernel_st~0 := 2; 9663#L540 assume !(1 == ~c_req_up~0); 9680#L540-2 start_simulation_~kernel_st~0 := 3; 9762#L552 assume !(0 == ~e_f~0); 9763#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 9810#L557-1 assume !(0 == ~e_e~0); 9853#L562-1 assume !(0 == ~e_c~0); 9863#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 9849#L572-1 assume !(1 == ~wl_pc~0); 9776#L584 assume !(2 == ~wl_pc~0); 9777#L585 assume !(1 == ~c1_pc~0); 9769#L595 assume !(1 == ~c2_pc~0); 9781#L604 assume !(1 == ~wb_pc~0); 9754#L613 assume !(1 == ~e_c~0); 9739#L622-1 assume !(1 == ~e_e~0); 9740#L627-1 assume !(1 == ~e_f~0); 9694#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 9695#L637-1 assume !(1 == ~e_c~0); 9826#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 9870#L647-1 assume 0 == ~wl_st~0; 10165#L664-1 [2021-10-21 19:13:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:11,151 INFO L82 PathProgramCache]: Analyzing trace with hash 255605077, now seen corresponding path program 1 times [2021-10-21 19:13:11,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:11,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618768353] [2021-10-21 19:13:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:11,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:11,176 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 19:13:11,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:11,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618768353] [2021-10-21 19:13:11,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618768353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:11,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:11,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:11,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092588849] [2021-10-21 19:13:11,177 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:11,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2057748350, now seen corresponding path program 1 times [2021-10-21 19:13:11,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:11,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380531363] [2021-10-21 19:13:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:11,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:11,194 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 19:13:11,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:11,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380531363] [2021-10-21 19:13:11,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380531363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:11,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:11,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:13:11,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423806065] [2021-10-21 19:13:11,195 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:11,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:13:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:13:11,196 INFO L87 Difference]: Start difference. First operand 1385 states and 2270 transitions. cyclomatic complexity: 900 Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:13:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:11,323 INFO L93 Difference]: Finished difference Result 2476 states and 3984 transitions. [2021-10-21 19:13:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:13:11,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2476 states and 3984 transitions. [2021-10-21 19:13:11,347 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 1451 [2021-10-21 19:13:11,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2476 states to 2476 states and 3984 transitions. [2021-10-21 19:13:11,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1568 [2021-10-21 19:13:11,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1568 [2021-10-21 19:13:11,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2476 states and 3984 transitions. [2021-10-21 19:13:11,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:11,373 INFO L681 BuchiCegarLoop]: Abstraction has 2476 states and 3984 transitions. [2021-10-21 19:13:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states and 3984 transitions. [2021-10-21 19:13:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2468. [2021-10-21 19:13:11,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2468 states have (on average 1.6110210696920584) internal successors, (3976), 2467 states have internal predecessors, (3976), 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 19:13:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3976 transitions. [2021-10-21 19:13:11,444 INFO L704 BuchiCegarLoop]: Abstraction has 2468 states and 3976 transitions. [2021-10-21 19:13:11,444 INFO L587 BuchiCegarLoop]: Abstraction has 2468 states and 3976 transitions. [2021-10-21 19:13:11,444 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-21 19:13:11,444 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2468 states and 3976 transitions. [2021-10-21 19:13:11,458 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 1451 [2021-10-21 19:13:11,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:11,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:11,460 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:11,460 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:11,460 INFO L791 eck$LassoCheckResult]: Stem: 13775#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 13629#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 13630#L396 assume !(1 == ~c_req_up~0); 13594#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 13595#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 13740#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 13741#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 13680#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 13681#L427-1 assume !(0 == ~e_f~0); 13790#L432-1 assume !(0 == ~e_g~0); 13596#L437-1 assume !(0 == ~e_e~0); 13597#L442-1 assume !(0 == ~e_c~0); 13628#L447-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 13604#L452-1 assume !(1 == ~wl_pc~0); 13605#L464 assume !(2 == ~wl_pc~0); 13811#L465 assume !(1 == ~c1_pc~0); 13704#L475 assume !(1 == ~c2_pc~0); 13706#L484 assume !(1 == ~wb_pc~0); 13538#L493 assume !(1 == ~e_c~0); 13539#L502-1 assume !(1 == ~e_e~0); 13560#L507-1 assume !(1 == ~e_f~0); 13561#L512-1 assume !(1 == ~e_g~0); 13568#L517-1 assume !(1 == ~e_c~0); 13569#L522-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 14999#L664-1 [2021-10-21 19:13:11,460 INFO L793 eck$LassoCheckResult]: Loop: 14999#L664-1 assume !false; 14998#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 14936#L369 assume !false; 14994#L287 assume !(0 == ~wl_st~0); 14995#L291 assume !(0 == ~c1_st~0); 14997#L294 assume !(0 == ~c2_st~0); 14992#L297 assume !(0 == ~wb_st~0); 14993#L300 assume !(0 == ~r_st~0); 14996#L385 start_simulation_~kernel_st~0 := 2; 15049#L540 assume !(1 == ~c_req_up~0); 15047#L540-2 start_simulation_~kernel_st~0 := 3; 15045#L552 assume !(0 == ~e_f~0); 15043#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 15040#L557-1 assume !(0 == ~e_e~0); 15039#L562-1 assume !(0 == ~e_c~0); 15037#L567-1 assume 0 == ~e_wl~0;~e_wl~0 := 1; 15036#L572-1 assume !(1 == ~wl_pc~0); 15032#L584 assume !(2 == ~wl_pc~0); 15029#L585 assume !(1 == ~c1_pc~0); 15027#L595 assume !(1 == ~c2_pc~0); 15021#L604 assume !(1 == ~wb_pc~0); 15017#L613 assume !(1 == ~e_c~0); 15014#L622-1 assume !(1 == ~e_e~0); 15012#L627-1 assume !(1 == ~e_f~0); 15010#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 15008#L637-1 assume !(1 == ~e_c~0); 15006#L642-1 assume 1 == ~e_wl~0;~e_wl~0 := 2; 15005#L647-1 assume 0 == ~wl_st~0; 14999#L664-1 [2021-10-21 19:13:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:11,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2560361, now seen corresponding path program 1 times [2021-10-21 19:13:11,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:11,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697309812] [2021-10-21 19:13:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:11,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:11,494 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 19:13:11,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:11,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697309812] [2021-10-21 19:13:11,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697309812] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:11,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:11,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:13:11,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722293223] [2021-10-21 19:13:11,496 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2057748350, now seen corresponding path program 2 times [2021-10-21 19:13:11,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:11,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137176580] [2021-10-21 19:13:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:11,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:11,530 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 19:13:11,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:11,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137176580] [2021-10-21 19:13:11,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137176580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:11,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:11,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:13:11,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078227003] [2021-10-21 19:13:11,531 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:11,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:13:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:13:11,533 INFO L87 Difference]: Start difference. First operand 2468 states and 3976 transitions. cyclomatic complexity: 1531 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:13:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:11,612 INFO L93 Difference]: Finished difference Result 3337 states and 5340 transitions. [2021-10-21 19:13:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:13:11,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3337 states and 5340 transitions. [2021-10-21 19:13:11,640 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 1869 [2021-10-21 19:13:11,669 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3337 states to 3337 states and 5340 transitions. [2021-10-21 19:13:11,669 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1969 [2021-10-21 19:13:11,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1969 [2021-10-21 19:13:11,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3337 states and 5340 transitions. [2021-10-21 19:13:11,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:11,674 INFO L681 BuchiCegarLoop]: Abstraction has 3337 states and 5340 transitions. [2021-10-21 19:13:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states and 5340 transitions. [2021-10-21 19:13:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 3269. [2021-10-21 19:13:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 3269 states have (on average 1.6072193331293974) internal successors, (5254), 3268 states have internal predecessors, (5254), 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 19:13:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 5254 transitions. [2021-10-21 19:13:11,794 INFO L704 BuchiCegarLoop]: Abstraction has 3269 states and 5254 transitions. [2021-10-21 19:13:11,794 INFO L587 BuchiCegarLoop]: Abstraction has 3269 states and 5254 transitions. [2021-10-21 19:13:11,794 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-21 19:13:11,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3269 states and 5254 transitions. [2021-10-21 19:13:11,808 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 1862 [2021-10-21 19:13:11,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:11,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:11,809 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:11,809 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:11,809 INFO L791 eck$LassoCheckResult]: Stem: 19598#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 19443#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 19444#L396 assume !(1 == ~c_req_up~0); 19356#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 19570#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 19571#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 19596#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 19597#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 19609#L427-1 assume !(0 == ~e_f~0); 19608#L432-1 assume !(0 == ~e_g~0); 19410#L437-1 assume !(0 == ~e_e~0); 19411#L442-1 assume !(0 == ~e_c~0); 19442#L447-1 assume !(0 == ~e_wl~0); 19580#L452-1 assume !(1 == ~wl_pc~0); 19617#L464 assume !(2 == ~wl_pc~0); 19616#L465 assume !(1 == ~c1_pc~0); 19614#L475 assume !(1 == ~c2_pc~0); 19612#L484 assume !(1 == ~wb_pc~0); 19353#L493 assume !(1 == ~e_c~0); 19354#L502-1 assume !(1 == ~e_e~0); 19377#L507-1 assume !(1 == ~e_f~0); 19378#L512-1 assume !(1 == ~e_g~0); 19383#L517-1 assume !(1 == ~e_c~0); 19357#L522-1 assume !(1 == ~e_wl~0); 19358#L664-1 assume !false; 20178#L534 [2021-10-21 19:13:11,810 INFO L793 eck$LassoCheckResult]: Loop: 20178#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 21541#L369 assume !false; 21631#L287 assume !(0 == ~wl_st~0); 21632#L291 assume !(0 == ~c1_st~0); 21634#L294 assume !(0 == ~c2_st~0); 21629#L297 assume !(0 == ~wb_st~0); 21630#L300 assume !(0 == ~r_st~0); 21633#L385 start_simulation_~kernel_st~0 := 2; 21692#L540 assume !(1 == ~c_req_up~0); 21686#L540-2 start_simulation_~kernel_st~0 := 3; 21685#L552 assume !(0 == ~e_f~0); 21684#L552-2 assume 0 == ~e_g~0;~e_g~0 := 1; 21683#L557-1 assume !(0 == ~e_e~0); 21682#L562-1 assume !(0 == ~e_c~0); 21681#L567-1 assume !(0 == ~e_wl~0); 21680#L572-1 assume !(1 == ~wl_pc~0); 21677#L584 assume !(2 == ~wl_pc~0); 21676#L585 assume !(1 == ~c1_pc~0); 21674#L595 assume !(1 == ~c2_pc~0); 21667#L604 assume !(1 == ~wb_pc~0); 21663#L613 assume !(1 == ~e_c~0); 21656#L622-1 assume !(1 == ~e_e~0); 21653#L627-1 assume !(1 == ~e_f~0); 21652#L632-1 assume 1 == ~e_g~0;~e_g~0 := 2; 21651#L637-1 assume !(1 == ~e_c~0); 21648#L642-1 assume !(1 == ~e_wl~0); 21646#L647-1 assume 0 == ~wl_st~0; 21641#L664-1 assume !false; 20178#L534 [2021-10-21 19:13:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash -666176964, now seen corresponding path program 1 times [2021-10-21 19:13:11,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:11,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490240891] [2021-10-21 19:13:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:11,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:11,819 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:11,836 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash 793828832, now seen corresponding path program 1 times [2021-10-21 19:13:11,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:11,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990880872] [2021-10-21 19:13:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:11,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:11,859 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 19:13:11,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:11,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990880872] [2021-10-21 19:13:11,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990880872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:11,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:11,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:11,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734693949] [2021-10-21 19:13:11,863 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:13:11,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:11,865 INFO L87 Difference]: Start difference. First operand 3269 states and 5254 transitions. cyclomatic complexity: 2011 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 19:13:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:11,906 INFO L93 Difference]: Finished difference Result 4142 states and 6587 transitions. [2021-10-21 19:13:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:11,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4142 states and 6587 transitions. [2021-10-21 19:13:11,930 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 2320 [2021-10-21 19:13:11,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4142 states to 4142 states and 6587 transitions. [2021-10-21 19:13:11,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2452 [2021-10-21 19:13:11,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2452 [2021-10-21 19:13:11,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4142 states and 6587 transitions. [2021-10-21 19:13:11,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:11,969 INFO L681 BuchiCegarLoop]: Abstraction has 4142 states and 6587 transitions. [2021-10-21 19:13:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states and 6587 transitions. [2021-10-21 19:13:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3496. [2021-10-21 19:13:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 3496 states have (on average 1.6024027459954233) internal successors, (5602), 3495 states have internal predecessors, (5602), 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 19:13:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5602 transitions. [2021-10-21 19:13:12,131 INFO L704 BuchiCegarLoop]: Abstraction has 3496 states and 5602 transitions. [2021-10-21 19:13:12,131 INFO L587 BuchiCegarLoop]: Abstraction has 3496 states and 5602 transitions. [2021-10-21 19:13:12,131 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-21 19:13:12,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3496 states and 5602 transitions. [2021-10-21 19:13:12,147 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 2011 [2021-10-21 19:13:12,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:12,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:12,148 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:12,148 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:12,148 INFO L791 eck$LassoCheckResult]: Stem: 27017#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 26862#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 26863#L396 assume !(1 == ~c_req_up~0); 26773#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 26988#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 26989#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 27015#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 27016#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 27033#L427-1 assume !(0 == ~e_f~0); 27032#L432-1 assume !(0 == ~e_g~0); 26829#L437-1 assume !(0 == ~e_e~0); 26830#L442-1 assume !(0 == ~e_c~0); 26861#L447-1 assume !(0 == ~e_wl~0); 26994#L452-1 assume !(1 == ~wl_pc~0); 27040#L464 assume !(2 == ~wl_pc~0); 27039#L465 assume !(1 == ~c1_pc~0); 27037#L475 assume !(1 == ~c2_pc~0); 27035#L484 assume !(1 == ~wb_pc~0); 26770#L493 assume !(1 == ~e_c~0); 26771#L502-1 assume !(1 == ~e_e~0); 26795#L507-1 assume !(1 == ~e_f~0); 26796#L512-1 assume !(1 == ~e_g~0); 26801#L517-1 assume !(1 == ~e_c~0); 26802#L522-1 assume !(1 == ~e_wl~0); 27061#L664-1 assume !false; 27062#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 28948#L369 [2021-10-21 19:13:12,148 INFO L793 eck$LassoCheckResult]: Loop: 28948#L369 assume !false; 28935#L287 assume 0 == ~wl_st~0; 28927#L300-1 assume 0 == ~wl_st~0;eval_~tmp~0 := eval_#t~nondet7;havoc eval_#t~nondet7; 28929#L313 assume !(0 != eval_~tmp~0); 29071#L309 assume !(0 == ~c1_st~0); 29072#L324 assume !(0 == ~c2_st~0); 29621#L339 assume !(0 == ~wb_st~0); 28950#L354 assume !(0 == ~r_st~0); 28948#L369 [2021-10-21 19:13:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:12,150 INFO L82 PathProgramCache]: Analyzing trace with hash 823350777, now seen corresponding path program 1 times [2021-10-21 19:13:12,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:12,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070182093] [2021-10-21 19:13:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:12,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,161 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,193 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:12,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1276011885, now seen corresponding path program 1 times [2021-10-21 19:13:12,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:12,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615789795] [2021-10-21 19:13:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:12,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,203 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:12,207 INFO L82 PathProgramCache]: Analyzing trace with hash 357057381, now seen corresponding path program 1 times [2021-10-21 19:13:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:12,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203841323] [2021-10-21 19:13:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:12,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:12,245 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 19:13:12,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:12,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203841323] [2021-10-21 19:13:12,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203841323] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:12,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:12,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:12,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401023017] [2021-10-21 19:13:12,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:12,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:12,286 INFO L87 Difference]: Start difference. First operand 3496 states and 5602 transitions. cyclomatic complexity: 2133 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 19:13:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:12,333 INFO L93 Difference]: Finished difference Result 5385 states and 8596 transitions. [2021-10-21 19:13:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:12,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5385 states and 8596 transitions. [2021-10-21 19:13:12,361 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 3116 [2021-10-21 19:13:12,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5385 states to 5385 states and 8596 transitions. [2021-10-21 19:13:12,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3254 [2021-10-21 19:13:12,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3254 [2021-10-21 19:13:12,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5385 states and 8596 transitions. [2021-10-21 19:13:12,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:12,466 INFO L681 BuchiCegarLoop]: Abstraction has 5385 states and 8596 transitions. [2021-10-21 19:13:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states and 8596 transitions. [2021-10-21 19:13:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 5385. [2021-10-21 19:13:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 5385 states have (on average 1.5962859795728876) internal successors, (8596), 5384 states have internal predecessors, (8596), 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 19:13:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 8596 transitions. [2021-10-21 19:13:12,655 INFO L704 BuchiCegarLoop]: Abstraction has 5385 states and 8596 transitions. [2021-10-21 19:13:12,655 INFO L587 BuchiCegarLoop]: Abstraction has 5385 states and 8596 transitions. [2021-10-21 19:13:12,656 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-21 19:13:12,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5385 states and 8596 transitions. [2021-10-21 19:13:12,699 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 3116 [2021-10-21 19:13:12,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:12,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:12,700 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:12,700 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:12,700 INFO L791 eck$LassoCheckResult]: Stem: 35915#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 35757#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 35758#L396 assume !(1 == ~c_req_up~0); 35662#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 35886#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 35887#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 35913#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 35914#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 35927#L427-1 assume !(0 == ~e_f~0); 35926#L432-1 assume !(0 == ~e_g~0); 35717#L437-1 assume !(0 == ~e_e~0); 35718#L442-1 assume !(0 == ~e_c~0); 35756#L447-1 assume !(0 == ~e_wl~0); 35892#L452-1 assume !(1 == ~wl_pc~0); 35935#L464 assume !(2 == ~wl_pc~0); 35934#L465 assume !(1 == ~c1_pc~0); 35932#L475 assume !(1 == ~c2_pc~0); 35930#L484 assume !(1 == ~wb_pc~0); 35659#L493 assume !(1 == ~e_c~0); 35660#L502-1 assume !(1 == ~e_e~0); 35684#L507-1 assume !(1 == ~e_f~0); 35685#L512-1 assume !(1 == ~e_g~0); 35690#L517-1 assume !(1 == ~e_c~0); 35663#L522-1 assume !(1 == ~e_wl~0); 35664#L664-1 assume !false; 37573#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 39854#L369 [2021-10-21 19:13:12,700 INFO L793 eck$LassoCheckResult]: Loop: 39854#L369 assume !false; 39856#L287 assume 0 == ~wl_st~0; 39477#L300-1 assume 0 == ~wl_st~0;eval_~tmp~0 := eval_#t~nondet7;havoc eval_#t~nondet7; 39083#L313 assume !(0 != eval_~tmp~0); 39084#L309 assume 0 == ~c1_st~0;eval_~tmp___0~0 := eval_#t~nondet8;havoc eval_#t~nondet8; 39874#L328 assume !(0 != eval_~tmp___0~0); 39867#L324 assume !(0 == ~c2_st~0); 39859#L339 assume !(0 == ~wb_st~0); 39855#L354 assume !(0 == ~r_st~0); 39854#L369 [2021-10-21 19:13:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:12,701 INFO L82 PathProgramCache]: Analyzing trace with hash 823350777, now seen corresponding path program 2 times [2021-10-21 19:13:12,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:12,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372466713] [2021-10-21 19:13:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:12,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,713 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:12,736 INFO L82 PathProgramCache]: Analyzing trace with hash 850890528, now seen corresponding path program 1 times [2021-10-21 19:13:12,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:12,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933036000] [2021-10-21 19:13:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:12,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,741 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:12,746 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1866895320, now seen corresponding path program 1 times [2021-10-21 19:13:12,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:12,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33014458] [2021-10-21 19:13:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:12,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:12,794 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 19:13:12,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:12,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33014458] [2021-10-21 19:13:12,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33014458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:12,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:12,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:12,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802830290] [2021-10-21 19:13:12,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:12,850 INFO L87 Difference]: Start difference. First operand 5385 states and 8596 transitions. cyclomatic complexity: 3238 Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 19:13:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:12,930 INFO L93 Difference]: Finished difference Result 8560 states and 13539 transitions. [2021-10-21 19:13:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:12,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8560 states and 13539 transitions. [2021-10-21 19:13:12,977 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 4933 [2021-10-21 19:13:13,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8560 states to 8560 states and 13539 transitions. [2021-10-21 19:13:13,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5155 [2021-10-21 19:13:13,132 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5155 [2021-10-21 19:13:13,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8560 states and 13539 transitions. [2021-10-21 19:13:13,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:13,133 INFO L681 BuchiCegarLoop]: Abstraction has 8560 states and 13539 transitions. [2021-10-21 19:13:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8560 states and 13539 transitions. [2021-10-21 19:13:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8560 to 8560. [2021-10-21 19:13:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8560 states, 8560 states have (on average 1.5816588785046728) internal successors, (13539), 8559 states have internal predecessors, (13539), 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 19:13:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 13539 transitions. [2021-10-21 19:13:13,312 INFO L704 BuchiCegarLoop]: Abstraction has 8560 states and 13539 transitions. [2021-10-21 19:13:13,312 INFO L587 BuchiCegarLoop]: Abstraction has 8560 states and 13539 transitions. [2021-10-21 19:13:13,312 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-21 19:13:13,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8560 states and 13539 transitions. [2021-10-21 19:13:13,381 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 4933 [2021-10-21 19:13:13,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:13,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:13,382 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:13,382 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:13,382 INFO L791 eck$LassoCheckResult]: Stem: 49883#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 49705#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 49706#L396 assume !(1 == ~c_req_up~0); 49615#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 49853#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 49854#L412-1 assume !(1 == ~c2_i~0);~c2_st~0 := 2; 49881#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 49882#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 49910#L427-1 assume !(0 == ~e_f~0); 49909#L432-1 assume !(0 == ~e_g~0); 49666#L437-1 assume !(0 == ~e_e~0); 49667#L442-1 assume !(0 == ~e_c~0); 49704#L447-1 assume !(0 == ~e_wl~0); 49861#L452-1 assume !(1 == ~wl_pc~0); 49862#L464 assume !(2 == ~wl_pc~0); 49863#L465 assume !(1 == ~c1_pc~0); 49713#L475 assume !(1 == ~c2_pc~0); 49798#L484 assume !(1 == ~wb_pc~0); 49612#L493 assume !(1 == ~e_c~0); 49613#L502-1 assume !(1 == ~e_e~0); 49635#L507-1 assume !(1 == ~e_f~0); 49636#L512-1 assume !(1 == ~e_g~0); 49930#L517-1 assume !(1 == ~e_c~0); 52348#L522-1 assume !(1 == ~e_wl~0); 52346#L664-1 assume !false; 52347#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 54027#L369 [2021-10-21 19:13:13,382 INFO L793 eck$LassoCheckResult]: Loop: 54027#L369 assume !false; 54022#L287 assume 0 == ~wl_st~0; 54018#L300-1 assume 0 == ~wl_st~0;eval_~tmp~0 := eval_#t~nondet7;havoc eval_#t~nondet7; 54015#L313 assume !(0 != eval_~tmp~0); 54016#L309 assume 0 == ~c1_st~0;eval_~tmp___0~0 := eval_#t~nondet8;havoc eval_#t~nondet8; 54043#L328 assume !(0 != eval_~tmp___0~0); 54040#L324 assume !(0 == ~c2_st~0); 54031#L339 assume !(0 == ~wb_st~0); 54030#L354 assume !(0 == ~r_st~0); 54027#L369 [2021-10-21 19:13:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:13,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1246052603, now seen corresponding path program 1 times [2021-10-21 19:13:13,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:13,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729464303] [2021-10-21 19:13:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:13,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:13,400 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 19:13:13,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:13,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729464303] [2021-10-21 19:13:13,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729464303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:13,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:13,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:13,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974980270] [2021-10-21 19:13:13,401 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:13:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:13,401 INFO L82 PathProgramCache]: Analyzing trace with hash 850890528, now seen corresponding path program 2 times [2021-10-21 19:13:13,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:13,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585550432] [2021-10-21 19:13:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:13,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:13,405 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:13,408 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:13,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:13,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:13,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:13,465 INFO L87 Difference]: Start difference. First operand 8560 states and 13539 transitions. cyclomatic complexity: 5006 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:13:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:13,501 INFO L93 Difference]: Finished difference Result 8508 states and 13462 transitions. [2021-10-21 19:13:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:13,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8508 states and 13462 transitions. [2021-10-21 19:13:13,541 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 4933 [2021-10-21 19:13:13,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8508 states to 8508 states and 13462 transitions. [2021-10-21 19:13:13,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5105 [2021-10-21 19:13:13,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5105 [2021-10-21 19:13:13,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8508 states and 13462 transitions. [2021-10-21 19:13:13,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:13,644 INFO L681 BuchiCegarLoop]: Abstraction has 8508 states and 13462 transitions. [2021-10-21 19:13:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states and 13462 transitions. [2021-10-21 19:13:13,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8508. [2021-10-21 19:13:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8508 states, 8508 states have (on average 1.5822755054066762) internal successors, (13462), 8507 states have internal predecessors, (13462), 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 19:13:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8508 states to 8508 states and 13462 transitions. [2021-10-21 19:13:13,806 INFO L704 BuchiCegarLoop]: Abstraction has 8508 states and 13462 transitions. [2021-10-21 19:13:13,806 INFO L587 BuchiCegarLoop]: Abstraction has 8508 states and 13462 transitions. [2021-10-21 19:13:13,807 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-21 19:13:13,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8508 states and 13462 transitions. [2021-10-21 19:13:13,838 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 4933 [2021-10-21 19:13:13,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:13,839 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:13,841 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:13,841 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:13,841 INFO L791 eck$LassoCheckResult]: Stem: 66954#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 66782#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 66783#L396 assume !(1 == ~c_req_up~0); 66689#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 66921#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 66922#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 66952#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 66953#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 66969#L427-1 assume !(0 == ~e_f~0); 66968#L432-1 assume !(0 == ~e_g~0); 66741#L437-1 assume !(0 == ~e_e~0); 66742#L442-1 assume !(0 == ~e_c~0); 66781#L447-1 assume !(0 == ~e_wl~0); 66927#L452-1 assume !(1 == ~wl_pc~0); 66977#L464 assume !(2 == ~wl_pc~0); 66976#L465 assume !(1 == ~c1_pc~0); 66974#L475 assume !(1 == ~c2_pc~0); 66972#L484 assume !(1 == ~wb_pc~0); 66686#L493 assume !(1 == ~e_c~0); 66687#L502-1 assume !(1 == ~e_e~0); 66710#L507-1 assume !(1 == ~e_f~0); 66711#L512-1 assume !(1 == ~e_g~0); 66716#L517-1 assume !(1 == ~e_c~0); 66690#L522-1 assume !(1 == ~e_wl~0); 66691#L664-1 assume !false; 69332#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 70747#L369 [2021-10-21 19:13:13,841 INFO L793 eck$LassoCheckResult]: Loop: 70747#L369 assume !false; 73447#L287 assume 0 == ~wl_st~0; 73445#L300-1 assume 0 == ~wl_st~0;eval_~tmp~0 := eval_#t~nondet7;havoc eval_#t~nondet7; 73442#L313 assume !(0 != eval_~tmp~0); 73436#L309 assume 0 == ~c1_st~0;eval_~tmp___0~0 := eval_#t~nondet8;havoc eval_#t~nondet8; 73434#L328 assume !(0 != eval_~tmp___0~0); 73433#L324 assume 0 == ~c2_st~0;eval_~tmp___1~0 := eval_#t~nondet9;havoc eval_#t~nondet9; 73424#L343 assume !(0 != eval_~tmp___1~0); 70750#L339 assume !(0 == ~wb_st~0); 70749#L354 assume !(0 == ~r_st~0); 70747#L369 [2021-10-21 19:13:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:13,842 INFO L82 PathProgramCache]: Analyzing trace with hash 823350777, now seen corresponding path program 3 times [2021-10-21 19:13:13,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:13,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872600095] [2021-10-21 19:13:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:13,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:13,855 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:13,868 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:13,869 INFO L82 PathProgramCache]: Analyzing trace with hash 606182616, now seen corresponding path program 1 times [2021-10-21 19:13:13,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:13,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144260223] [2021-10-21 19:13:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:13,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:13,873 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:13,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:13,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:13,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2040800048, now seen corresponding path program 1 times [2021-10-21 19:13:13,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:13,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475703194] [2021-10-21 19:13:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:13,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:13,912 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 19:13:13,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:13,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475703194] [2021-10-21 19:13:13,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475703194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:13,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:13,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:13:13,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935843995] [2021-10-21 19:13:13,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:13,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:13:13,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:13:13,977 INFO L87 Difference]: Start difference. First operand 8508 states and 13462 transitions. cyclomatic complexity: 4981 Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:13:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:14,068 INFO L93 Difference]: Finished difference Result 14674 states and 23053 transitions. [2021-10-21 19:13:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:13:14,068 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14674 states and 23053 transitions. [2021-10-21 19:13:14,239 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 8506 [2021-10-21 19:13:14,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14674 states to 14674 states and 23053 transitions. [2021-10-21 19:13:14,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8764 [2021-10-21 19:13:14,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8764 [2021-10-21 19:13:14,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14674 states and 23053 transitions. [2021-10-21 19:13:14,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:13:14,306 INFO L681 BuchiCegarLoop]: Abstraction has 14674 states and 23053 transitions. [2021-10-21 19:13:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14674 states and 23053 transitions. [2021-10-21 19:13:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14674 to 14674. [2021-10-21 19:13:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14674 states, 14674 states have (on average 1.5710099495706693) internal successors, (23053), 14673 states have internal predecessors, (23053), 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 19:13:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14674 states to 14674 states and 23053 transitions. [2021-10-21 19:13:14,531 INFO L704 BuchiCegarLoop]: Abstraction has 14674 states and 23053 transitions. [2021-10-21 19:13:14,531 INFO L587 BuchiCegarLoop]: Abstraction has 14674 states and 23053 transitions. [2021-10-21 19:13:14,531 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-21 19:13:14,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14674 states and 23053 transitions. [2021-10-21 19:13:14,657 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 8506 [2021-10-21 19:13:14,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:13:14,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:13:14,658 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:14,658 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:14,658 INFO L791 eck$LassoCheckResult]: Stem: 90150#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(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~c~0 := 0;~c_t~0 := 0;~c_req_up~0 := 0;~p_in~0 := 0;~p_out~0 := 0;~wl_st~0 := 0;~c1_st~0 := 0;~c2_st~0 := 0;~wb_st~0 := 0;~r_st~0 := 0;~wl_i~0 := 0;~c1_i~0 := 0;~c2_i~0 := 0;~wb_i~0 := 0;~r_i~0 := 0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~e_e~0 := 0;~e_f~0 := 0;~e_g~0 := 0;~e_c~0 := 0;~e_p_in~0 := 0;~e_wl~0 := 0;~d~0 := 0;~data~0 := 0;~processed~0 := 0;~t_b~0 := 0; 89973#L-1 havoc main_#res;havoc main_~__retres1~0;havoc main_~__retres1~0;~e_wl~0 := 2;~e_c~0 := ~e_wl~0;~e_g~0 := ~e_c~0;~e_f~0 := ~e_g~0;~e_e~0 := ~e_f~0;~wl_pc~0 := 0;~c1_pc~0 := 0;~c2_pc~0 := 0;~wb_pc~0 := 0;~wb_i~0 := 1;~c2_i~0 := ~wb_i~0;~c1_i~0 := ~c2_i~0;~wl_i~0 := ~c1_i~0;~r_i~0 := 0;~c_req_up~0 := 0;~d~0 := 0;~c~0 := 0;havoc start_simulation_~kernel_st~0;havoc start_simulation_~kernel_st~0;start_simulation_~kernel_st~0 := 0; 89974#L396 assume !(1 == ~c_req_up~0); 89879#L396-2 assume 1 == ~wl_i~0;~wl_st~0 := 0; 90112#L407-1 assume 1 == ~c1_i~0;~c1_st~0 := 0; 90113#L412-1 assume 1 == ~c2_i~0;~c2_st~0 := 0; 90147#L417-1 assume 1 == ~wb_i~0;~wb_st~0 := 0; 90148#L422-1 assume !(1 == ~r_i~0);~r_st~0 := 2; 90174#L427-1 assume !(0 == ~e_f~0); 90173#L432-1 assume !(0 == ~e_g~0); 89931#L437-1 assume !(0 == ~e_e~0); 89932#L442-1 assume !(0 == ~e_c~0); 89972#L447-1 assume !(0 == ~e_wl~0); 90122#L452-1 assume !(1 == ~wl_pc~0); 90182#L464 assume !(2 == ~wl_pc~0); 90181#L465 assume !(1 == ~c1_pc~0); 90179#L475 assume !(1 == ~c2_pc~0); 90177#L484 assume !(1 == ~wb_pc~0); 89876#L493 assume !(1 == ~e_c~0); 89877#L502-1 assume !(1 == ~e_e~0); 89896#L507-1 assume !(1 == ~e_f~0); 89897#L512-1 assume !(1 == ~e_g~0); 89906#L517-1 assume !(1 == ~e_c~0); 89880#L522-1 assume !(1 == ~e_wl~0); 89881#L664-1 assume !false; 92265#L534 start_simulation_~kernel_st~0 := 1;havoc eval_#t~nondet7, eval_#t~nondet8, eval_#t~nondet9, eval_#t~nondet10, eval_#t~nondet11, eval_~tmp~0, eval_~tmp___0~0, eval_~tmp___1~0, eval_~tmp___2~0, eval_~tmp___3~0;havoc eval_~tmp~0;havoc eval_~tmp___0~0;havoc eval_~tmp___1~0;havoc eval_~tmp___2~0;havoc eval_~tmp___3~0; 99428#L369 [2021-10-21 19:13:14,658 INFO L793 eck$LassoCheckResult]: Loop: 99428#L369 assume !false; 99681#L287 assume 0 == ~wl_st~0; 99678#L300-1 assume 0 == ~wl_st~0;eval_~tmp~0 := eval_#t~nondet7;havoc eval_#t~nondet7; 99674#L313 assume !(0 != eval_~tmp~0); 99672#L309 assume 0 == ~c1_st~0;eval_~tmp___0~0 := eval_#t~nondet8;havoc eval_#t~nondet8; 99543#L328 assume !(0 != eval_~tmp___0~0); 99671#L324 assume 0 == ~c2_st~0;eval_~tmp___1~0 := eval_#t~nondet9;havoc eval_#t~nondet9; 99630#L343 assume !(0 != eval_~tmp___1~0); 99667#L339 assume 0 == ~wb_st~0;eval_~tmp___2~0 := eval_#t~nondet10;havoc eval_#t~nondet10; 99314#L358 assume !(0 != eval_~tmp___2~0); 99344#L354 assume !(0 == ~r_st~0); 99428#L369 [2021-10-21 19:13:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:14,659 INFO L82 PathProgramCache]: Analyzing trace with hash 823350777, now seen corresponding path program 4 times [2021-10-21 19:13:14,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:14,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006997603] [2021-10-21 19:13:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:14,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:14,667 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:14,679 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1611757493, now seen corresponding path program 1 times [2021-10-21 19:13:14,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:14,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895660856] [2021-10-21 19:13:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:14,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:14,684 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:14,687 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1159673533, now seen corresponding path program 1 times [2021-10-21 19:13:14,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:14,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511097138] [2021-10-21 19:13:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:14,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:14,697 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:14,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:16,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:13:16 BoogieIcfgContainer [2021-10-21 19:13:16,116 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:13:16,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:13:16,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:13:16,117 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:13:16,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:06" (3/4) ... [2021-10-21 19:13:16,119 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:13:16,161 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:13:16,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:13:16,162 INFO L168 Benchmark]: Toolchain (without parser) took 10406.76 ms. Allocated memory was 79.7 MB in the beginning and 440.4 MB in the end (delta: 360.7 MB). Free memory was 40.1 MB in the beginning and 246.7 MB in the end (delta: -206.6 MB). Peak memory consumption was 153.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:16,163 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:16,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.70 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 39.9 MB in the beginning and 69.6 MB in the end (delta: -29.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:16,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.68 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 67.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:16,164 INFO L168 Benchmark]: Boogie Preprocessor took 67.04 ms. Allocated memory is still 98.6 MB. Free memory was 67.3 MB in the beginning and 65.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:16,164 INFO L168 Benchmark]: RCFGBuilder took 628.15 ms. Allocated memory is still 98.6 MB. Free memory was 65.2 MB in the beginning and 45.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:16,165 INFO L168 Benchmark]: BuchiAutomizer took 9163.25 ms. Allocated memory was 98.6 MB in the beginning and 440.4 MB in the end (delta: 341.8 MB). Free memory was 45.2 MB in the beginning and 249.9 MB in the end (delta: -204.7 MB). Peak memory consumption was 254.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:16,165 INFO L168 Benchmark]: Witness Printer took 44.72 ms. Allocated memory is still 440.4 MB. Free memory was 249.9 MB in the beginning and 246.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:16,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 447.70 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 39.9 MB in the beginning and 69.6 MB in the end (delta: -29.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.68 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 67.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.04 ms. Allocated memory is still 98.6 MB. Free memory was 67.3 MB in the beginning and 65.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 628.15 ms. Allocated memory is still 98.6 MB. Free memory was 65.2 MB in the beginning and 45.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9163.25 ms. Allocated memory was 98.6 MB in the beginning and 440.4 MB in the end (delta: 341.8 MB). Free memory was 45.2 MB in the beginning and 249.9 MB in the end (delta: -204.7 MB). Peak memory consumption was 254.6 MB. Max. memory is 16.1 GB. * Witness Printer took 44.72 ms. Allocated memory is still 440.4 MB. Free memory was 249.9 MB in the beginning and 246.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 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 17 terminating modules (16 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * e_c + 1 and consists of 3 locations. 16 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 14674 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.1s and 17 iterations. TraceHistogramMax:1. Analysis of lassos took 4.6s. Construction of modules took 0.3s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 12. Automata minimization 1365.9ms AutomataMinimizationTime, 17 MinimizatonAttempts, 918 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 1.0s Buchi closure took 0.0s. Biggest automaton had 14674 states and ocurred in iteration 16. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4252 SDtfs, 4141 SDslu, 2308 SDs, 0 SdLazy, 427 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 376.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc3 concLT0 SILN1 SILU0 SILI9 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital80 mio100 ax100 hnf100 lsp11 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf94 smp100 dnf150 smp100 tf108 neg92 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 286]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=17603} State at position 1 is {wb_st=0, NULL=0, NULL=17603, c2_st=0, tmp=0, e_c=2, e_e=2, e_p_in=0, kernel_st=1, t_b=0, tmp___2=0, wb_pc=0, tmp___0=0, wb_i=1, c_t=0, NULL=0, NULL=0, c=0, wl_st=0, c2_pc=0, r_i=0, e_f=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@730cd956=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10078b37=0, NULL=0, r_st=2, __retres1=0, p_out=0, NULL=17606, processed=0, \result=0, wl_pc=0, e_wl=2, tmp___1=0, data=0, p_in=0, tmp___3=0, c_req_up=0, NULL=17605, wl_i=1, NULL=0, c1_st=0, NULL=17604, c1_i=1, c2_i=1, d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59b77c13=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e6543a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b490424=0, e_g=2, c1_pc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 286]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L20] int c ; [L21] int c_t ; [L22] int c_req_up ; [L23] int p_in ; [L24] int p_out ; [L25] int wl_st ; [L26] int c1_st ; [L27] int c2_st ; [L28] int wb_st ; [L29] int r_st ; [L30] int wl_i ; [L31] int c1_i ; [L32] int c2_i ; [L33] int wb_i ; [L34] int r_i ; [L35] int wl_pc ; [L36] int c1_pc ; [L37] int c2_pc ; [L38] int wb_pc ; [L39] int e_e ; [L40] int e_f ; [L41] int e_g ; [L42] int e_c ; [L43] int e_p_in ; [L44] int e_wl ; [L50] int d ; [L51] int data ; [L52] int processed ; [L53] static int t_b ; [L681] int __retres1 ; [L685] e_wl = 2 [L686] e_c = e_wl [L687] e_g = e_c [L688] e_f = e_g [L689] e_e = e_f [L690] wl_pc = 0 [L691] c1_pc = 0 [L692] c2_pc = 0 [L693] wb_pc = 0 [L694] wb_i = 1 [L695] c2_i = wb_i [L696] c1_i = c2_i [L697] wl_i = c1_i [L698] r_i = 0 [L699] c_req_up = 0 [L700] d = 0 [L701] c = 0 [L392] int kernel_st ; [L395] kernel_st = 0 [L396] COND FALSE !((int )c_req_up == 1) [L407] COND TRUE (int )wl_i == 1 [L408] wl_st = 0 [L412] COND TRUE (int )c1_i == 1 [L413] c1_st = 0 [L417] COND TRUE (int )c2_i == 1 [L418] c2_st = 0 [L422] COND TRUE (int )wb_i == 1 [L423] wb_st = 0 [L427] COND FALSE !((int )r_i == 1) [L430] r_st = 2 [L432] COND FALSE !((int )e_f == 0) [L437] COND FALSE !((int )e_g == 0) [L442] COND FALSE !((int )e_e == 0) [L447] COND FALSE !((int )e_c == 0) [L452] COND FALSE !((int )e_wl == 0) [L457] COND FALSE !((int )wl_pc == 1) [L465] COND FALSE !((int )wl_pc == 2) [L475] COND FALSE !((int )c1_pc == 1) [L484] COND FALSE !((int )c2_pc == 1) [L493] COND FALSE !((int )wb_pc == 1) [L502] COND FALSE !((int )e_c == 1) [L507] COND FALSE !((int )e_e == 1) [L512] COND FALSE !((int )e_f == 1) [L517] COND FALSE !((int )e_g == 1) [L522] COND FALSE !((int )e_c == 1) [L527] COND FALSE !((int )e_wl == 1) [L533] COND TRUE 1 [L536] kernel_st = 1 [L278] int tmp ; [L279] int tmp___0 ; [L280] int tmp___1 ; [L281] int tmp___2 ; [L282] int tmp___3 ; Loop: [L286] COND TRUE 1 [L288] COND TRUE (int )wl_st == 0 [L309] COND TRUE (int )wl_st == 0 [L311] tmp = __VERIFIER_nondet_int() [L313] COND FALSE !(\read(tmp)) [L324] COND TRUE (int )c1_st == 0 [L326] tmp___0 = __VERIFIER_nondet_int() [L328] COND FALSE !(\read(tmp___0)) [L339] COND TRUE (int )c2_st == 0 [L341] tmp___1 = __VERIFIER_nondet_int() [L343] COND FALSE !(\read(tmp___1)) [L354] COND TRUE (int )wb_st == 0 [L356] tmp___2 = __VERIFIER_nondet_int() [L358] COND FALSE !(\read(tmp___2)) [L369] COND FALSE !((int )r_st == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:13:16,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c206a00-ec98-4ff7-9d91-5aec957fa0b0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...