./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product46.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_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/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_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/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_f7410109-ef1f-4988-ad21-0ce8f9ee0401/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 458689bcd0930e2b07a61b7490d83be8ce4e59412b26a60581bf78c492ee412e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:22:12,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:22:12,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:22:12,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:22:12,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:22:12,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:22:12,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:22:12,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:22:12,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:22:12,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:22:12,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:22:12,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:22:12,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:22:12,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:22:12,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:22:12,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:22:12,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:22:12,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:22:12,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:22:12,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:22:12,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:22:12,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:22:12,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:22:12,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:22:12,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:22:12,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:22:12,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:22:12,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:22:12,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:22:12,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:22:12,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:22:12,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:22:12,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:22:12,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:22:12,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:22:12,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:22:12,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:22:12,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:22:12,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:22:12,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:22:12,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:22:12,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:22:12,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:22:12,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:22:12,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:22:12,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:22:12,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:22:12,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:22:12,364 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:22:12,364 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:22:12,364 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:22:12,365 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:22:12,366 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:22:12,366 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:22:12,366 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:22:12,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:22:12,367 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:22:12,367 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:22:12,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:22:12,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:22:12,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:22:12,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:22:12,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:22:12,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:22:12,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:22:12,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:22:12,369 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:22:12,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:22:12,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:22:12,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:22:12,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:22:12,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:22:12,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:22:12,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:22:12,375 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:22:12,375 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_f7410109-ef1f-4988-ad21-0ce8f9ee0401/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 458689bcd0930e2b07a61b7490d83be8ce4e59412b26a60581bf78c492ee412e [2021-10-28 23:22:12,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:22:12,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:22:12,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:22:12,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:22:12,685 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:22:12,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c [2021-10-28 23:22:12,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/data/35864a0fc/ad04f8cbd67b40deb735f2ac98ba4c0c/FLAGfe607474e [2021-10-28 23:22:13,269 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:22:13,270 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c [2021-10-28 23:22:13,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/data/35864a0fc/ad04f8cbd67b40deb735f2ac98ba4c0c/FLAGfe607474e [2021-10-28 23:22:13,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/data/35864a0fc/ad04f8cbd67b40deb735f2ac98ba4c0c [2021-10-28 23:22:13,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:22:13,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:22:13,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:13,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:22:13,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:22:13,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:13" (1/1) ... [2021-10-28 23:22:13,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fc8b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:13, skipping insertion in model container [2021-10-28 23:22:13,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:13" (1/1) ... [2021-10-28 23:22:13,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:22:13,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:22:13,956 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_f7410109-ef1f-4988-ad21-0ce8f9ee0401/sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c[18431,18444] [2021-10-28 23:22:13,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:13,978 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:22:14,087 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_f7410109-ef1f-4988-ad21-0ce8f9ee0401/sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c[18431,18444] [2021-10-28 23:22:14,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:14,109 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:22:14,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14 WrapperNode [2021-10-28 23:22:14,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:14,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:14,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:22:14,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:22:14,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:14,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:22:14,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:22:14,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:22:14,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:22:14,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:22:14,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:22:14,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:22:14,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (1/1) ... [2021-10-28 23:22:14,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:22:14,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:14,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:14,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:22:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:22:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:22:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:22:14,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:22:15,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:22:15,415 INFO L299 CfgBuilder]: Removed 200 assume(true) statements. [2021-10-28 23:22:15,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:15 BoogieIcfgContainer [2021-10-28 23:22:15,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:22:15,419 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:22:15,419 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:22:15,424 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:22:15,425 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:22:15,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:22:13" (1/3) ... [2021-10-28 23:22:15,427 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ae84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:22:15, skipping insertion in model container [2021-10-28 23:22:15,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:22:15,428 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:14" (2/3) ... [2021-10-28 23:22:15,428 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ae84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:22:15, skipping insertion in model container [2021-10-28 23:22:15,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:22:15,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:15" (3/3) ... [2021-10-28 23:22:15,430 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product46.cil.c [2021-10-28 23:22:15,481 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:22:15,481 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:22:15,481 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:22:15,482 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:22:15,482 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:22:15,482 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:22:15,482 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:22:15,482 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:22:15,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:15,534 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-28 23:22:15,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:15,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:15,543 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:15,543 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:15,544 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:22:15,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:15,554 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-28 23:22:15,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:15,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:15,556 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:15,556 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:15,561 INFO L791 eck$LassoCheckResult]: Stem: 124#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 53#L-1true havoc main_#res;havoc main_#t~ret46, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 118#L113true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 34#L121true main_#t~ret46 := valid_product_#res;main_~tmp~4 := main_#t~ret46;havoc main_#t~ret46; 15#L579true assume 0 != main_~tmp~4; 127#L555true havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 129#L69-1true [2021-10-28 23:22:15,562 INFO L793 eck$LassoCheckResult]: Loop: 129#L69-1true assume !false; 62#L907true assume test_~splverifierCounter~0 < 4; 78#L908true test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 121#L916true assume !(0 != test_~tmp~9); 81#L916-1true test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 101#L926true assume !(0 != test_~tmp___0~2); 123#L926-1true test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 47#L936true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 115#L944-2true assume !(0 != ~pumpRunning~0); 65#L700true assume !(0 != ~systemActive~0); 83#L707true 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~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 50#L639-3true __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; 5#L63true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 129#L69-1true [2021-10-28 23:22:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 23:22:15,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:15,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510478289] [2021-10-28 23:22:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:15,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:15,874 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:16,146 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:16,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1678359114, now seen corresponding path program 1 times [2021-10-28 23:22:16,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:16,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886816082] [2021-10-28 23:22:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:16,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:16,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886816082] [2021-10-28 23:22:16,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886816082] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:16,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:16,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:22:16,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834695417] [2021-10-28 23:22:16,245 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:22:16,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:22:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:22:16,264 INFO L87 Difference]: Start difference. First operand has 132 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 131 states have internal predecessors, (198), 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 23:22:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:16,307 INFO L93 Difference]: Finished difference Result 132 states and 188 transitions. [2021-10-28 23:22:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:22:16,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 188 transitions. [2021-10-28 23:22:16,317 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-28 23:22:16,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 125 states and 180 transitions. [2021-10-28 23:22:16,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2021-10-28 23:22:16,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 125 [2021-10-28 23:22:16,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 180 transitions. [2021-10-28 23:22:16,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:22:16,329 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-28 23:22:16,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 180 transitions. [2021-10-28 23:22:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-28 23:22:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.44) internal successors, (180), 124 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2021-10-28 23:22:16,381 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-28 23:22:16,381 INFO L587 BuchiCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-28 23:22:16,381 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:22:16,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 180 transitions. [2021-10-28 23:22:16,387 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-28 23:22:16,388 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:16,388 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:16,389 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:16,389 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:16,389 INFO L791 eck$LassoCheckResult]: Stem: 396#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 351#L-1 havoc main_#res;havoc main_#t~ret46, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 352#L113 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 327#L121 main_#t~ret46 := valid_product_#res;main_~tmp~4 := main_#t~ret46;havoc main_#t~ret46; 295#L579 assume 0 != main_~tmp~4; 296#L555 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 277#L69-1 [2021-10-28 23:22:16,389 INFO L793 eck$LassoCheckResult]: Loop: 277#L69-1 assume !false; 360#L907 assume test_~splverifierCounter~0 < 4; 361#L908 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 378#L916 assume !(0 != test_~tmp~9); 349#L916-1 test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 379#L926 assume !(0 != test_~tmp___0~2); 376#L926-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 343#L936 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 285#L944-2 assume !(0 != ~pumpRunning~0); 298#L700 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 366#L758 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 364#L732-1 assume !(0 == ~pumpRunning~0); 322#L707 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~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 347#L639-3 __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; 276#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 277#L69-1 [2021-10-28 23:22:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 23:22:16,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:16,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101755347] [2021-10-28 23:22:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:16,471 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:16,550 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1075674056, now seen corresponding path program 1 times [2021-10-28 23:22:16,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:16,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632681884] [2021-10-28 23:22:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:16,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:16,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632681884] [2021-10-28 23:22:16,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632681884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:16,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:16,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:22:16,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407993383] [2021-10-28 23:22:16,587 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:22:16,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:16,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:22:16,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:22:16,588 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. cyclomatic complexity: 57 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 23:22:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:16,723 INFO L93 Difference]: Finished difference Result 172 states and 237 transitions. [2021-10-28 23:22:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:22:16,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 172 states and 237 transitions. [2021-10-28 23:22:16,726 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-10-28 23:22:16,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 172 states to 172 states and 237 transitions. [2021-10-28 23:22:16,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 172 [2021-10-28 23:22:16,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2021-10-28 23:22:16,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 172 states and 237 transitions. [2021-10-28 23:22:16,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:22:16,731 INFO L681 BuchiCegarLoop]: Abstraction has 172 states and 237 transitions. [2021-10-28 23:22:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states and 237 transitions. [2021-10-28 23:22:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-28 23:22:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 172 states have (on average 1.377906976744186) internal successors, (237), 171 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 237 transitions. [2021-10-28 23:22:16,759 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 237 transitions. [2021-10-28 23:22:16,759 INFO L587 BuchiCegarLoop]: Abstraction has 172 states and 237 transitions. [2021-10-28 23:22:16,759 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:22:16,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 237 transitions. [2021-10-28 23:22:16,761 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-10-28 23:22:16,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:16,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:16,763 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:16,764 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 23:22:16,764 INFO L791 eck$LassoCheckResult]: Stem: 706#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 656#L-1 havoc main_#res;havoc main_#t~ret46, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 657#L113 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 629#L121 main_#t~ret46 := valid_product_#res;main_~tmp~4 := main_#t~ret46;havoc main_#t~ret46; 598#L579 assume 0 != main_~tmp~4; 599#L555 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 580#L69-1 [2021-10-28 23:22:16,764 INFO L793 eck$LassoCheckResult]: Loop: 580#L69-1 assume !false; 665#L907 assume test_~splverifierCounter~0 < 4; 666#L908 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 686#L916 assume !(0 != test_~tmp~9); 654#L916-1 test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 688#L926 assume !(0 != test_~tmp___0~2); 683#L926-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 648#L936 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 588#L944-2 assume !(0 != ~pumpRunning~0); 671#L700 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 672#L758 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 669#L732-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 670#L679-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 694#L684-1 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 619#L877-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 620#L877-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 649#L883-1 processEnvironment__wrappee__methaneQuery_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret57;havoc processEnvironment__wrappee__methaneQuery_#t~ret57; 650#L736-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 644#L707 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~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 652#L639-3 __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; 579#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 580#L69-1 [2021-10-28 23:22:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 23:22:16,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:16,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204129115] [2021-10-28 23:22:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:16,840 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:16,941 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:16,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash -515194556, now seen corresponding path program 1 times [2021-10-28 23:22:16,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:16,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540737142] [2021-10-28 23:22:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:16,960 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:16,976 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash -59123362, now seen corresponding path program 1 times [2021-10-28 23:22:16,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:16,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627067457] [2021-10-28 23:22:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:17,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:17,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627067457] [2021-10-28 23:22:17,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627067457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:17,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:17,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:22:17,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284516130] [2021-10-28 23:22:17,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:22:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:22:17,375 INFO L87 Difference]: Start difference. First operand 172 states and 237 transitions. cyclomatic complexity: 67 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 23:22:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:17,631 INFO L93 Difference]: Finished difference Result 574 states and 794 transitions. [2021-10-28 23:22:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:22:17,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 574 states and 794 transitions. [2021-10-28 23:22:17,643 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 411 [2021-10-28 23:22:17,652 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 574 states to 574 states and 794 transitions. [2021-10-28 23:22:17,652 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 574 [2021-10-28 23:22:17,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 574 [2021-10-28 23:22:17,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 574 states and 794 transitions. [2021-10-28 23:22:17,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:22:17,663 INFO L681 BuchiCegarLoop]: Abstraction has 574 states and 794 transitions. [2021-10-28 23:22:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states and 794 transitions. [2021-10-28 23:22:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 338. [2021-10-28 23:22:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 338 states have (on average 1.3609467455621302) internal successors, (460), 337 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:22:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 460 transitions. [2021-10-28 23:22:17,698 INFO L704 BuchiCegarLoop]: Abstraction has 338 states and 460 transitions. [2021-10-28 23:22:17,698 INFO L587 BuchiCegarLoop]: Abstraction has 338 states and 460 transitions. [2021-10-28 23:22:17,698 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:22:17,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 338 states and 460 transitions. [2021-10-28 23:22:17,702 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 236 [2021-10-28 23:22:17,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:22:17,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:22:17,705 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:17,705 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 23:22:17,706 INFO L791 eck$LassoCheckResult]: Stem: 1492#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1422#L-1 havoc main_#res;havoc main_#t~ret46, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 1423#L113 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1395#L121 main_#t~ret46 := valid_product_#res;main_~tmp~4 := main_#t~ret46;havoc main_#t~ret46; 1361#L579 assume 0 != main_~tmp~4; 1362#L555 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1496#L69-1 [2021-10-28 23:22:17,706 INFO L793 eck$LassoCheckResult]: Loop: 1496#L69-1 assume !false; 1607#L907 assume test_~splverifierCounter~0 < 4; 1608#L908 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 1677#L916 assume !(0 != test_~tmp~9); 1675#L916-1 test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 1674#L926 assume !(0 != test_~tmp___0~2); 1673#L926-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 1672#L936 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1670#L944-2 assume !(0 != ~pumpRunning~0); 1582#L700 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1669#L758 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1533#L732-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1668#L679-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1667#L684-1 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 1666#L877-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1665#L877-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1662#L883-1 processEnvironment__wrappee__methaneQuery_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret57;havoc processEnvironment__wrappee__methaneQuery_#t~ret57; 1531#L736-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 1408#L707 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~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1459#L639-3 __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; 1343#L63 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1344#L671 __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; 1609#L69 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1496#L69-1 [2021-10-28 23:22:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 23:22:17,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:17,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113461849] [2021-10-28 23:22:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:17,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:17,784 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:17,825 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1180720874, now seen corresponding path program 1 times [2021-10-28 23:22:17,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:17,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305545680] [2021-10-28 23:22:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:17,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:17,835 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:17,844 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -982967632, now seen corresponding path program 1 times [2021-10-28 23:22:17,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:17,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420462164] [2021-10-28 23:22:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:17,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:17,881 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:17,930 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:16,166 WARN L207 SmtUtils]: Spent 57.92 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 23:24:15,298 WARN L207 SmtUtils]: Spent 29.96 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 23:24:15,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:24:15 BoogieIcfgContainer [2021-10-28 23:24:15,458 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:24:15,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:24:15,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:24:15,459 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:24:15,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:15" (3/4) ... [2021-10-28 23:24:15,468 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:24:15,530 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:24:15,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:24:15,533 INFO L168 Benchmark]: Toolchain (without parser) took 121914.26 ms. Allocated memory was 81.8 MB in the beginning and 134.2 MB in the end (delta: 52.4 MB). Free memory was 41.7 MB in the beginning and 70.6 MB in the end (delta: -28.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:24:15,533 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 59.1 MB in the beginning and 59.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:24:15,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.30 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 41.5 MB in the beginning and 70.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:24:15,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.77 ms. Allocated memory is still 109.1 MB. Free memory was 70.8 MB in the beginning and 66.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:24:15,535 INFO L168 Benchmark]: Boogie Preprocessor took 68.20 ms. Allocated memory is still 109.1 MB. Free memory was 66.6 MB in the beginning and 64.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:24:15,535 INFO L168 Benchmark]: RCFGBuilder took 1142.14 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 53.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:24:15,536 INFO L168 Benchmark]: BuchiAutomizer took 120039.82 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 53.1 MB in the beginning and 72.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:24:15,537 INFO L168 Benchmark]: Witness Printer took 72.76 ms. Allocated memory is still 134.2 MB. Free memory was 72.6 MB in the beginning and 70.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:24:15,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 59.1 MB in the beginning and 59.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 491.30 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 41.5 MB in the beginning and 70.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.77 ms. Allocated memory is still 109.1 MB. Free memory was 70.8 MB in the beginning and 66.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.20 ms. Allocated memory is still 109.1 MB. Free memory was 66.6 MB in the beginning and 64.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1142.14 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 53.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 120039.82 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 53.1 MB in the beginning and 72.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. * Witness Printer took 72.76 ms. Allocated memory is still 134.2 MB. Free memory was 72.6 MB in the beginning and 70.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: 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 338 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 119.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 119.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 236 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 338 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 593 SDtfs, 1008 SDslu, 821 SDs, 0 SdLazy, 164 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 906]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=1, NULL=0, NULL=0, NULL=33828, methaneLevelCritical=0, NULL=0, NULL=33849, NULL=33830, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54771cd0=0, tmp=0, NULL=33848, NULL=0, NULL=33833, tmp=0, cleanupTimeShifts=4, NULL=33842, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=20206, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp=1, retValue_acc=1, tmp___0=0, NULL=33847, NULL=33841, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24b374c8=0, head=0, tmp=0, NULL=33836, NULL=0, NULL=0, NULL=33854, NULL=33853, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@777e1705=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56c85990=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b31c49b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38091e10=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61155368=0, retValue_acc=0, NULL=33829, NULL=0, NULL=33852, NULL=33851, tmp___0=0, NULL=33832, NULL=0, NULL=0, tmp___0=1, NULL=33843, NULL=33845, NULL=33839, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ed5c57c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a59c94c=0, NULL=0, NULL=0, systemActive=1, \result=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@291f387b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@590fe58b=83, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=33835, \result=0, NULL=33840, NULL=33850, NULL=33846, NULL=33855, retValue_acc=1, tmp___2=83, splverifierCounter=0, NULL=0, \result=0, NULL=33834, NULL=33837, tmp___1=0, NULL=33844, NULL=33838, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int cleanupTimeShifts = 4; [L596] int waterLevel = 1; [L597] int methaneLevelCritical = 0; [L693] int pumpRunning = 0; [L694] int systemActive = 1; [L570] int retValue_acc ; [L571] int tmp ; [L117] int retValue_acc ; [L120] retValue_acc = 1 [L121] return (retValue_acc); [L577] tmp = valid_product() [L579] COND TRUE \read(tmp) [L897] int splverifierCounter ; [L898] int tmp ; [L899] int tmp___0 ; [L900] int tmp___1 ; [L901] int tmp___2 ; [L904] splverifierCounter = 0 Loop: [L906] COND TRUE 1 [L908] COND TRUE splverifierCounter < 4 [L914] tmp = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp)) [L924] tmp___0 = __VERIFIER_nondet_int() [L926] COND FALSE !(\read(tmp___0)) [L934] tmp___2 = __VERIFIER_nondet_int() [L936] COND TRUE \read(tmp___2) [L891] systemActive = 1 [L700] COND FALSE !(\read(pumpRunning)) [L707] COND TRUE \read(systemActive) [L755] int tmp ; [L758] COND FALSE !(\read(pumpRunning)) [L729] int tmp ; [L732] COND TRUE ! pumpRunning [L869] int retValue_acc ; [L870] int tmp ; [L871] int tmp___0 ; [L676] int retValue_acc ; [L679] COND TRUE waterLevel < 2 [L680] retValue_acc = 1 [L681] return (retValue_acc); [L875] tmp = isHighWaterSensorDry() [L877] COND TRUE \read(tmp) [L878] tmp___0 = 0 [L882] retValue_acc = tmp___0 [L883] return (retValue_acc); [L734] tmp = isHighWaterLevel() [L736] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; [L635] int retValue_acc ; [L638] retValue_acc = methaneLevelCritical [L639] return (retValue_acc); [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) [L667] int retValue_acc ; [L670] retValue_acc = waterLevel [L671] 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 23:24:15,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7410109-ef1f-4988-ad21-0ce8f9ee0401/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...