./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e70c7d407828df40e6ca35d99b4a3a65ee0ebef631e767452684b3cd94b17437 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:53:54,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:53:54,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:53:54,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:53:54,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:53:54,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:53:54,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:53:54,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:53:54,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:53:54,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:53:54,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:53:54,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:53:54,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:53:54,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:53:54,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:53:54,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:53:54,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:53:54,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:53:54,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:53:54,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:53:54,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:53:54,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:53:54,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:53:54,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:53:54,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:53:54,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:53:54,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:53:54,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:53:54,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:53:54,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:53:54,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:53:54,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:53:54,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:53:54,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:53:54,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:53:54,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:53:54,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:53:54,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:53:54,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:53:54,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:53:54,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:53:54,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 22:53:54,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:53:54,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:53:54,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:53:54,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:53:54,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:53:54,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:53:54,406 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:53:54,407 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:53:54,407 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:53:54,407 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:53:54,407 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:53:54,407 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:53:54,407 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:53:54,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:53:54,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:53:54,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:53:54,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:53:54,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:53:54,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:53:54,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:53:54,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:53:54,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:53:54,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:53:54,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:53:54,410 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:53:54,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:53:54,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:53:54,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:53:54,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:53:54,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:53:54,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:53:54,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:53:54,412 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:53:54,412 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_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70c7d407828df40e6ca35d99b4a3a65ee0ebef631e767452684b3cd94b17437 [2021-10-28 22:53:54,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:53:54,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:53:54,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:53:54,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:53:54,674 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:53:54,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-10-28 22:53:54,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/data/0c78d5525/b80ea70707634f9ab69525262a4d2791/FLAG809b9f79c [2021-10-28 22:53:55,238 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:53:55,238 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-10-28 22:53:55,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/data/0c78d5525/b80ea70707634f9ab69525262a4d2791/FLAG809b9f79c [2021-10-28 22:53:55,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/data/0c78d5525/b80ea70707634f9ab69525262a4d2791 [2021-10-28 22:53:55,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:53:55,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:53:55,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:55,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:53:55,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:53:55,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:55" (1/1) ... [2021-10-28 22:53:55,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710889a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:55, skipping insertion in model container [2021-10-28 22:53:55,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:55" (1/1) ... [2021-10-28 22:53:55,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:53:55,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:53:55,955 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_fe7c9c59-3887-4691-a78f-cc6e10d187eb/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c[17256,17269] [2021-10-28 22:53:55,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:55,990 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:53:56,072 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_fe7c9c59-3887-4691-a78f-cc6e10d187eb/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c[17256,17269] [2021-10-28 22:53:56,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:56,107 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:53:56,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56 WrapperNode [2021-10-28 22:53:56,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:56,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:53:56,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:53:56,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:53:56,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:53:56,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:53:56,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:53:56,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:53:56,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:53:56,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:53:56,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:53:56,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:53:56,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (1/1) ... [2021-10-28 22:53:56,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:56,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:56,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:56,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:53:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:53:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:53:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:53:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:53:57,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:53:57,250 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-10-28 22:53:57,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:57 BoogieIcfgContainer [2021-10-28 22:53:57,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:53:57,255 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:53:57,255 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:53:57,262 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:53:57,264 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:57,265 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:53:55" (1/3) ... [2021-10-28 22:53:57,266 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d1b7e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:53:57, skipping insertion in model container [2021-10-28 22:53:57,266 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:57,266 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:56" (2/3) ... [2021-10-28 22:53:57,267 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d1b7e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:53:57, skipping insertion in model container [2021-10-28 22:53:57,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:57,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:57" (3/3) ... [2021-10-28 22:53:57,269 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2021-10-28 22:53:57,325 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:53:57,325 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:53:57,325 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:53:57,325 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:53:57,325 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:53:57,325 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:53:57,325 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:53:57,325 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:53:57,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:57,371 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-28 22:53:57,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:57,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:57,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:57,380 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:57,380 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:53:57,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:57,390 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-28 22:53:57,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:57,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:57,391 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:57,392 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:57,397 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(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 37#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 76#L893true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 119#L901true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 36#L988true assume 0 != main_~tmp~9; 81#L965true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 118#L69-1true [2021-10-28 22:53:57,397 INFO L793 eck$LassoCheckResult]: Loop: 118#L69-1true assume !false; 106#L801true assume test_~splverifierCounter~0 < 4; 48#L802true test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 7#L810true assume !(0 != test_~tmp~8); 110#L810-1true test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 24#L820true assume !(0 != test_~tmp___0~3); 61#L820-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 99#L830true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 19#L838-1true assume !(0 != ~pumpRunning~0); 83#L576true assume !(0 != ~systemActive~0); 92#L583true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 65#L137true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 9#L63true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 118#L69-1true [2021-10-28 22:53:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:57,403 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 22:53:57,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:57,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843580477] [2021-10-28 22:53:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:57,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:57,628 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:57,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1670232129, now seen corresponding path program 1 times [2021-10-28 22:53:57,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:57,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668546994] [2021-10-28 22:53:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:57,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:57,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:57,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668546994] [2021-10-28 22:53:57,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668546994] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:57,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:57,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:53:57,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268934136] [2021-10-28 22:53:57,814 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:53:57,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:53:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:53:57,832 INFO L87 Difference]: Start difference. First operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:57,888 INFO L93 Difference]: Finished difference Result 238 states and 348 transitions. [2021-10-28 22:53:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:53:57,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 238 states and 348 transitions. [2021-10-28 22:53:57,900 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2021-10-28 22:53:57,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 238 states to 224 states and 333 transitions. [2021-10-28 22:53:57,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2021-10-28 22:53:57,909 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-10-28 22:53:57,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2021-10-28 22:53:57,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:53:57,911 INFO L681 BuchiCegarLoop]: Abstraction has 224 states and 333 transitions. [2021-10-28 22:53:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2021-10-28 22:53:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2021-10-28 22:53:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 221 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2021-10-28 22:53:57,954 INFO L704 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-10-28 22:53:57,954 INFO L587 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-10-28 22:53:57,954 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:53:57,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2021-10-28 22:53:57,958 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-10-28 22:53:57,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:57,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:57,959 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:57,960 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:57,960 INFO L791 eck$LassoCheckResult]: Stem: 494#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(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 430#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 431#L893 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 472#L901 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 428#L988 assume 0 != main_~tmp~9; 429#L965 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 380#L69-1 [2021-10-28 22:53:57,960 INFO L793 eck$LassoCheckResult]: Loop: 380#L69-1 assume !false; 490#L801 assume test_~splverifierCounter~0 < 4; 446#L802 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 374#L810 assume !(0 != test_~tmp~8); 376#L810-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 507#L820 assume !(0 != test_~tmp___0~3); 505#L820-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 487#L830 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 401#L838-1 assume !(0 != ~pumpRunning~0); 403#L576 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 475#L634 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 477#L608-1 assume !(0 == ~pumpRunning~0); 378#L583 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 461#L137 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 379#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 380#L69-1 [2021-10-28 22:53:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 22:53:57,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:57,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786860173] [2021-10-28 22:53:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:57,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,044 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,129 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1415980259, now seen corresponding path program 1 times [2021-10-28 22:53:58,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:58,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709331131] [2021-10-28 22:53:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:58,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:58,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:58,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709331131] [2021-10-28 22:53:58,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709331131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:58,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:58,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:53:58,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648381432] [2021-10-28 22:53:58,149 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:53:58,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:58,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:53:58,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:53:58,151 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:58,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:58,276 INFO L93 Difference]: Finished difference Result 317 states and 448 transitions. [2021-10-28 22:53:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:53:58,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 448 transitions. [2021-10-28 22:53:58,282 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-10-28 22:53:58,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 317 states and 448 transitions. [2021-10-28 22:53:58,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 317 [2021-10-28 22:53:58,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 317 [2021-10-28 22:53:58,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 317 states and 448 transitions. [2021-10-28 22:53:58,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:53:58,289 INFO L681 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-10-28 22:53:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states and 448 transitions. [2021-10-28 22:53:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-10-28 22:53:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 317 states have (on average 1.413249211356467) internal successors, (448), 316 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2021-10-28 22:53:58,308 INFO L704 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-10-28 22:53:58,309 INFO L587 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-10-28 22:53:58,309 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:53:58,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 317 states and 448 transitions. [2021-10-28 22:53:58,313 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-10-28 22:53:58,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:58,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:58,315 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:58,315 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] [2021-10-28 22:53:58,315 INFO L791 eck$LassoCheckResult]: Stem: 1055#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(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 976#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 977#L893 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 1022#L901 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 974#L988 assume 0 != main_~tmp~9; 975#L965 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1025#L69-1 [2021-10-28 22:53:58,315 INFO L793 eck$LassoCheckResult]: Loop: 1025#L69-1 assume !false; 1161#L801 assume test_~splverifierCounter~0 < 4; 1160#L802 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 1159#L810 assume !(0 != test_~tmp~8); 1054#L810-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 955#L820 assume !(0 != test_~tmp___0~3); 956#L820-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 1006#L830 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 948#L838-1 assume !(0 != ~pumpRunning~0); 949#L576 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1026#L634 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1029#L608-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1004#L177-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1005#L182-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 929#L736-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 930#L736-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 978#L742-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 979#L612-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 925#L583 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1167#L137 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 1162#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 1025#L69-1 [2021-10-28 22:53:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 22:53:58,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:58,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729111434] [2021-10-28 22:53:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:58,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,392 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,496 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash 890409545, now seen corresponding path program 1 times [2021-10-28 22:53:58,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:58,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516650002] [2021-10-28 22:53:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:58,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,516 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:58,525 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1346480739, now seen corresponding path program 1 times [2021-10-28 22:53:58,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:58,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119211451] [2021-10-28 22:53:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:58,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:58,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:58,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119211451] [2021-10-28 22:53:58,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119211451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:58,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:58,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:53:58,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910008268] [2021-10-28 22:53:58,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:53:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:53:58,886 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. cyclomatic complexity: 134 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:59,005 INFO L93 Difference]: Finished difference Result 1101 states and 1566 transitions. [2021-10-28 22:53:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:53:59,005 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1101 states and 1566 transitions. [2021-10-28 22:53:59,025 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 834 [2021-10-28 22:53:59,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1101 states to 1101 states and 1566 transitions. [2021-10-28 22:53:59,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1101 [2021-10-28 22:53:59,041 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1101 [2021-10-28 22:53:59,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1101 states and 1566 transitions. [2021-10-28 22:53:59,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:53:59,049 INFO L681 BuchiCegarLoop]: Abstraction has 1101 states and 1566 transitions. [2021-10-28 22:53:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states and 1566 transitions. [2021-10-28 22:53:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 628. [2021-10-28 22:53:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 628 states have (on average 1.39171974522293) internal successors, (874), 627 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 874 transitions. [2021-10-28 22:53:59,119 INFO L704 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-10-28 22:53:59,119 INFO L587 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-10-28 22:53:59,119 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:53:59,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 628 states and 874 transitions. [2021-10-28 22:53:59,123 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2021-10-28 22:53:59,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:59,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:59,124 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:59,124 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] [2021-10-28 22:53:59,125 INFO L791 eck$LassoCheckResult]: Stem: 2493#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(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 2411#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 2412#L893 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 2458#L901 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 2409#L988 assume 0 != main_~tmp~9; 2410#L965 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2462#L69-1 [2021-10-28 22:53:59,125 INFO L793 eck$LassoCheckResult]: Loop: 2462#L69-1 assume !false; 2682#L801 assume test_~splverifierCounter~0 < 4; 2680#L802 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 2677#L810 assume !(0 != test_~tmp~8); 2674#L810-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 2671#L820 assume !(0 != test_~tmp___0~3); 2668#L820-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 2665#L830 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2659#L838-1 assume !(0 != ~pumpRunning~0); 2638#L576 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2639#L634 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2630#L608-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2625#L177-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2621#L182-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2616#L736-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 2611#L736-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 2606#L742-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 2575#L612-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2574#L583 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 2691#L137 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 2690#L63 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 2689#L169 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2686#L69 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2462#L69-1 [2021-10-28 22:53:59,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 22:53:59,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:59,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461297701] [2021-10-28 22:53:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:59,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:59,182 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:59,260 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash 985089051, now seen corresponding path program 1 times [2021-10-28 22:53:59,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:59,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13840671] [2021-10-28 22:53:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:59,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:59,269 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:59,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1182842293, now seen corresponding path program 1 times [2021-10-28 22:53:59,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:59,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455176292] [2021-10-28 22:53:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:59,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:59,346 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:59,421 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:54:54,386 WARN L207 SmtUtils]: Spent 54.70 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 22:55:52,227 WARN L207 SmtUtils]: Spent 28.02 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 22:55:52,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:55:52 BoogieIcfgContainer [2021-10-28 22:55:52,391 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:55:52,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:55:52,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:55:52,393 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:55:52,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:57" (3/4) ... [2021-10-28 22:55:52,402 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 22:55:52,458 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:55:52,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:55:52,465 INFO L168 Benchmark]: Toolchain (without parser) took 116888.95 ms. Allocated memory was 113.2 MB in the beginning and 169.9 MB in the end (delta: 56.6 MB). Free memory was 72.8 MB in the beginning and 76.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:52,466 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 113.2 MB. Free memory is still 90.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:55:52,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.42 ms. Allocated memory is still 113.2 MB. Free memory was 72.6 MB in the beginning and 78.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:52,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.11 ms. Allocated memory is still 113.2 MB. Free memory was 78.2 MB in the beginning and 74.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:52,467 INFO L168 Benchmark]: Boogie Preprocessor took 73.85 ms. Allocated memory is still 113.2 MB. Free memory was 74.5 MB in the beginning and 72.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:52,467 INFO L168 Benchmark]: RCFGBuilder took 985.24 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 72.0 MB in the beginning and 97.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:52,468 INFO L168 Benchmark]: BuchiAutomizer took 115136.46 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 97.0 MB in the beginning and 79.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 94.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:52,468 INFO L168 Benchmark]: Witness Printer took 65.96 ms. Allocated memory is still 169.9 MB. Free memory was 79.7 MB in the beginning and 76.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:52,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 113.2 MB. Free memory is still 90.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 531.42 ms. Allocated memory is still 113.2 MB. Free memory was 72.6 MB in the beginning and 78.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.11 ms. Allocated memory is still 113.2 MB. Free memory was 78.2 MB in the beginning and 74.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.85 ms. Allocated memory is still 113.2 MB. Free memory was 74.5 MB in the beginning and 72.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 985.24 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 72.0 MB in the beginning and 97.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 115136.46 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 97.0 MB in the beginning and 79.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 94.7 MB. Max. memory is 16.1 GB. * Witness Printer took 65.96 ms. Allocated memory is still 169.9 MB. Free memory was 79.7 MB in the beginning and 76.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 628 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 115.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 114.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 475 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 628 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 608 SDtfs, 985 SDslu, 1058 SDs, 0 SdLazy, 85 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 800]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31994} State at position 1 is {NULL=0, NULL=0, NULL=31994, NULL=36382, NULL=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69253d3d=0, NULL=36375, methaneLevelCritical=0, retValue_acc=0, NULL=0, tmp___1=0, tmp=0, NULL=0, NULL=36378, tmp=0, cleanupTimeShifts=4, NULL=36390, NULL=36394, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ea90292=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, retValue_acc=1, \result=1, NULL=36391, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=36398, NULL=36384, head=0, tmp=0, tmp=1, NULL=0, NULL=36397, NULL=36396, NULL=36399, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10236e77=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c495f47=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4efcd481=0, NULL=0, NULL=36387, NULL=36393, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@529d6cbc=0, NULL=0, NULL=0, NULL=36377, NULL=0, tmp___0=1, tmp=0, NULL=36388, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d87ec5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fd834b1=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@aae5321=0, NULL=0, systemActive=1, NULL=36380, \result=1, \result=0, NULL=36379, NULL=0, NULL=0, NULL=36395, retValue_acc=0, NULL=36392, \result=0, NULL=36383, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c0536cb=0, NULL=36386, NULL=36389, NULL=31996, tmp___2=68, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=31995, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@661332c4=0, NULL=36376, NULL=36381, NULL=0, NULL=0, NULL=0, NULL=36374, NULL=36385} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L94] int waterLevel = 1; [L95] int methaneLevelCritical = 0; [L366] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L569] int pumpRunning = 0; [L570] int systemActive = 1; [L906] int cleanupTimeShifts = 4; [L979] int retValue_acc ; [L980] int tmp ; [L897] int retValue_acc ; [L900] retValue_acc = 1 [L901] return (retValue_acc); [L986] tmp = valid_product() [L988] COND TRUE \read(tmp) [L791] int splverifierCounter ; [L792] int tmp ; [L793] int tmp___0 ; [L794] int tmp___1 ; [L795] int tmp___2 ; [L798] splverifierCounter = 0 Loop: [L800] COND TRUE 1 [L802] COND TRUE splverifierCounter < 4 [L808] tmp = __VERIFIER_nondet_int() [L810] COND FALSE !(\read(tmp)) [L818] tmp___0 = __VERIFIER_nondet_int() [L820] COND FALSE !(\read(tmp___0)) [L828] tmp___2 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___2) [L784] systemActive = 1 [L576] COND FALSE !(\read(pumpRunning)) [L583] COND TRUE \read(systemActive) [L631] int tmp ; [L634] COND FALSE !(\read(pumpRunning)) [L605] int tmp ; [L608] COND TRUE ! pumpRunning [L728] int retValue_acc ; [L729] int tmp ; [L730] int tmp___0 ; [L174] int retValue_acc ; [L177] COND TRUE waterLevel < 2 [L178] retValue_acc = 1 [L179] return (retValue_acc); [L734] tmp = isHighWaterSensorDry() [L736] COND TRUE \read(tmp) [L737] tmp___0 = 0 [L741] retValue_acc = tmp___0 [L742] return (retValue_acc); [L610] tmp = isHighWaterLevel() [L612] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; [L133] int retValue_acc ; [L136] retValue_acc = methaneLevelCritical [L137] return (retValue_acc); [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) [L165] int retValue_acc ; [L168] retValue_acc = waterLevel [L169] return (retValue_acc); [L67] tmp___0 = getWaterLevel() [L69] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 22:55:52,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7c9c59-3887-4691-a78f-cc6e10d187eb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...