./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX --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 909de5fe3a7d5a638d67615e2b4d48b563eefeab07033d1b2a29843c731be596 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:44:55,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:44:55,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:44:55,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:44:55,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:44:55,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:44:55,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:44:55,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:44:55,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:44:55,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:44:55,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:44:55,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:44:55,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:44:55,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:44:55,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:44:55,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:44:55,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:44:55,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:44:55,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:44:55,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:44:55,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:44:55,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:44:55,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:44:55,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:44:55,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:44:55,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:44:55,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:44:55,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:44:55,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:44:55,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:44:55,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:44:55,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:44:55,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:44:55,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:44:55,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:44:55,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:44:55,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:44:55,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:44:55,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:44:55,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:44:55,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:44:55,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-09 08:44:55,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:44:55,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:44:55,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:44:55,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:44:55,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:44:55,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:44:55,424 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:44:55,424 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 08:44:55,424 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 08:44:55,424 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 08:44:55,425 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 08:44:55,426 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 08:44:55,426 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 08:44:55,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:44:55,426 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:44:55,427 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:44:55,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:44:55,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:44:55,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:44:55,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 08:44:55,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 08:44:55,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 08:44:55,428 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:44:55,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:44:55,428 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 08:44:55,429 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:44:55,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 08:44:55,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:44:55,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:44:55,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:44:55,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:44:55,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:44:55,433 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 08:44:55,433 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_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 909de5fe3a7d5a638d67615e2b4d48b563eefeab07033d1b2a29843c731be596 [2021-11-09 08:44:55,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:44:55,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:44:55,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:44:55,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:44:55,796 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:44:55,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c [2021-11-09 08:44:55,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/data/c47e5b7f7/f7a4d2fb07894988978d56de81d31c75/FLAG4582376c4 [2021-11-09 08:44:56,445 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:44:56,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c [2021-11-09 08:44:56,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/data/c47e5b7f7/f7a4d2fb07894988978d56de81d31c75/FLAG4582376c4 [2021-11-09 08:44:56,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/data/c47e5b7f7/f7a4d2fb07894988978d56de81d31c75 [2021-11-09 08:44:56,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:44:56,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:44:56,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:44:56,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:44:56,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:44:56,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:44:56" (1/1) ... [2021-11-09 08:44:56,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33231bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:56, skipping insertion in model container [2021-11-09 08:44:56,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:44:56" (1/1) ... [2021-11-09 08:44:56,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:44:56,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:44:57,081 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_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c[19040,19053] [2021-11-09 08:44:57,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:44:57,092 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:44:57,165 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_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c[19040,19053] [2021-11-09 08:44:57,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:44:57,185 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:44:57,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57 WrapperNode [2021-11-09 08:44:57,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:44:57,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:44:57,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:44:57,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:44:57,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:44:57,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:44:57,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:44:57,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:44:57,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:44:57,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:44:57,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:44:57,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:44:57,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (1/1) ... [2021-11-09 08:44:57,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:44:57,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:57,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:44:57,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 08:44:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:44:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:44:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:44:57,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:44:58,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:44:58,547 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-11-09 08:44:58,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:58 BoogieIcfgContainer [2021-11-09 08:44:58,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:44:58,552 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 08:44:58,553 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 08:44:58,556 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 08:44:58,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:44:58,558 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 08:44:56" (1/3) ... [2021-11-09 08:44:58,560 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a7a141f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:44:58, skipping insertion in model container [2021-11-09 08:44:58,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:44:58,560 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:44:57" (2/3) ... [2021-11-09 08:44:58,560 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a7a141f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:44:58, skipping insertion in model container [2021-11-09 08:44:58,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:44:58,561 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:58" (3/3) ... [2021-11-09 08:44:58,563 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product57.cil.c [2021-11-09 08:44:58,631 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 08:44:58,631 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 08:44:58,631 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 08:44:58,632 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 08:44:58,632 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 08:44:58,632 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 08:44:58,632 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 08:44:58,632 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 08:44:58,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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) [2021-11-09 08:44:58,720 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-11-09 08:44:58,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:44:58,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:44:58,728 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:58,729 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:58,729 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 08:44:58,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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) [2021-11-09 08:44:58,738 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-11-09 08:44:58,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:44:58,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:44:58,739 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:58,739 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:58,744 INFO L791 eck$LassoCheckResult]: Stem: 128#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 48#L-1true havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 69#L75true 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; 30#L83true main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 93#L286true assume 0 != main_~tmp~0; 73#L260true ~methAndRunningLastTime~0 := 0; 17#L308true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 112#L319-1true [2021-11-09 08:44:58,745 INFO L793 eck$LassoCheckResult]: Loop: 112#L319-1true assume !false; 41#L569true assume test_~splverifierCounter~0 < 4; 47#L570true test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 55#L578true assume !(0 != test_~tmp~7); 57#L578-1true test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 101#L588true assume !(0 != test_~tmp___0~3); 135#L588-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 125#L598true assume 0 != test_~tmp___2~0; 71#L604-2true assume !(0 != ~pumpRunning~0); 113#L350true assume !(0 != ~systemActive~0); 64#L357true havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 25#L139-2true __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 138#L319true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 112#L319-1true [2021-11-09 08:44:58,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:58,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-11-09 08:44:58,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:58,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990649971] [2021-11-09 08:44:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:58,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:44:58,979 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:44:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:44:59,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:44:59,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:59,191 INFO L85 PathProgramCache]: Analyzing trace with hash 5185098, now seen corresponding path program 1 times [2021-11-09 08:44:59,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:59,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265050120] [2021-11-09 08:44:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:59,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:44:59,208 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:44:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:44:59,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:44:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash 838481604, now seen corresponding path program 1 times [2021-11-09 08:44:59,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:59,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043870271] [2021-11-09 08:44:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:59,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:59,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:59,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043870271] [2021-11-09 08:44:59,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043870271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:59,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:59,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:44:59,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682427422] [2021-11-09 08:44:59,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:59,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:44:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:44:59,634 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-11-09 08:44:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:59,853 INFO L93 Difference]: Finished difference Result 136 states and 194 transitions. [2021-11-09 08:44:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:44:59,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 194 transitions. [2021-11-09 08:44:59,860 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-11-09 08:44:59,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 129 states and 187 transitions. [2021-11-09 08:44:59,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2021-11-09 08:44:59,867 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2021-11-09 08:44:59,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 187 transitions. [2021-11-09 08:44:59,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:44:59,869 INFO L681 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-11-09 08:44:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 187 transitions. [2021-11-09 08:44:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-09 08:44:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.449612403100775) internal successors, (187), 128 states have internal predecessors, (187), 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) [2021-11-09 08:44:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2021-11-09 08:44:59,904 INFO L704 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-11-09 08:44:59,905 INFO L587 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-11-09 08:44:59,905 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-09 08:44:59,905 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 187 transitions. [2021-11-09 08:44:59,907 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-11-09 08:44:59,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:44:59,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:44:59,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:59,908 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:59,909 INFO L791 eck$LassoCheckResult]: Stem: 417#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 358#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 359#L75 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; 336#L83 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 337#L286 assume 0 != main_~tmp~0; 387#L260 ~methAndRunningLastTime~0 := 0; 316#L308 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 300#L319-1 [2021-11-09 08:44:59,909 INFO L793 eck$LassoCheckResult]: Loop: 300#L319-1 assume !false; 348#L569 assume test_~splverifierCounter~0 < 4; 349#L570 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 357#L578 assume !(0 != test_~tmp~7); 369#L578-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 372#L588 assume !(0 != test_~tmp___0~3); 390#L588-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 415#L598 assume 0 != test_~tmp___2~0; 371#L604-2 assume !(0 != ~pumpRunning~0); 367#L350 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 413#L408 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 338#L382-1 assume !(0 == ~pumpRunning~0); 339#L357 havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 327#L139-2 __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 328#L319 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 300#L319-1 [2021-11-09 08:44:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-11-09 08:44:59,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:59,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22971343] [2021-11-09 08:44:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:59,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:00,036 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:45:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:00,135 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:45:00,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1702188339, now seen corresponding path program 1 times [2021-11-09 08:45:00,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:00,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173820396] [2021-11-09 08:45:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:00,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:00,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:00,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173820396] [2021-11-09 08:45:00,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173820396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:00,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:00,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:45:00,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834405588] [2021-11-09 08:45:00,171 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 08:45:00,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:45:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:45:00,173 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. cyclomatic complexity: 60 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) [2021-11-09 08:45:00,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:00,265 INFO L93 Difference]: Finished difference Result 173 states and 241 transitions. [2021-11-09 08:45:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:45:00,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 241 transitions. [2021-11-09 08:45:00,269 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-11-09 08:45:00,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 173 states and 241 transitions. [2021-11-09 08:45:00,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2021-11-09 08:45:00,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2021-11-09 08:45:00,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 241 transitions. [2021-11-09 08:45:00,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:45:00,284 INFO L681 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-11-09 08:45:00,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 241 transitions. [2021-11-09 08:45:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-09 08:45:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 173 states have (on average 1.393063583815029) internal successors, (241), 172 states have internal predecessors, (241), 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) [2021-11-09 08:45:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 241 transitions. [2021-11-09 08:45:00,300 INFO L704 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-11-09 08:45:00,300 INFO L587 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-11-09 08:45:00,300 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-09 08:45:00,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 241 transitions. [2021-11-09 08:45:00,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-11-09 08:45:00,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:45:00,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:45:00,303 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:00,303 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] [2021-11-09 08:45:00,304 INFO L791 eck$LassoCheckResult]: Stem: 734#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 670#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 671#L75 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; 644#L83 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 645#L286 assume 0 != main_~tmp~0; 701#L260 ~methAndRunningLastTime~0 := 0; 624#L308 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 609#L319-1 [2021-11-09 08:45:00,304 INFO L793 eck$LassoCheckResult]: Loop: 609#L319-1 assume !false; 658#L569 assume test_~splverifierCounter~0 < 4; 659#L570 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 669#L578 assume !(0 != test_~tmp~7); 681#L578-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 684#L588 assume !(0 != test_~tmp___0~3); 707#L588-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 732#L598 assume 0 != test_~tmp___2~0; 683#L604-2 assume !(0 != ~pumpRunning~0); 699#L350 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 730#L408 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 648#L382-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 649#L179-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 713#L184-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 721#L528-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 722#L528-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 600#L534-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 601#L386-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 667#L357 havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 635#L139-2 __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 636#L319 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 609#L319-1 [2021-11-09 08:45:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-11-09 08:45:00,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:00,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824527161] [2021-11-09 08:45:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:00,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:00,343 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:45:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:00,389 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:45:00,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:00,390 INFO L85 PathProgramCache]: Analyzing trace with hash -926194367, now seen corresponding path program 1 times [2021-11-09 08:45:00,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:00,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640314887] [2021-11-09 08:45:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:00,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:00,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:00,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640314887] [2021-11-09 08:45:00,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640314887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:00,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:00,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:45:00,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340649299] [2021-11-09 08:45:00,416 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 08:45:00,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:00,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:45:00,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:45:00,418 INFO L87 Difference]: Start difference. First operand 173 states and 241 transitions. cyclomatic complexity: 70 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-09 08:45:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:00,539 INFO L93 Difference]: Finished difference Result 481 states and 661 transitions. [2021-11-09 08:45:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:00,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 481 states and 661 transitions. [2021-11-09 08:45:00,551 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 338 [2021-11-09 08:45:00,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 481 states to 481 states and 661 transitions. [2021-11-09 08:45:00,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2021-11-09 08:45:00,557 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 481 [2021-11-09 08:45:00,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 481 states and 661 transitions. [2021-11-09 08:45:00,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:45:00,560 INFO L681 BuchiCegarLoop]: Abstraction has 481 states and 661 transitions. [2021-11-09 08:45:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states and 661 transitions. [2021-11-09 08:45:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 185. [2021-11-09 08:45:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.3675675675675676) internal successors, (253), 184 states have internal predecessors, (253), 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) [2021-11-09 08:45:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 253 transitions. [2021-11-09 08:45:00,573 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-11-09 08:45:00,574 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-11-09 08:45:00,574 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-09 08:45:00,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 253 transitions. [2021-11-09 08:45:00,603 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-11-09 08:45:00,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:45:00,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:45:00,605 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:00,605 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] [2021-11-09 08:45:00,605 INFO L791 eck$LassoCheckResult]: Stem: 1410#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1339#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 1340#L75 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; 1313#L83 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 1314#L286 assume 0 != main_~tmp~0; 1370#L260 ~methAndRunningLastTime~0 := 0; 1289#L308 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1290#L319-1 [2021-11-09 08:45:00,606 INFO L793 eck$LassoCheckResult]: Loop: 1290#L319-1 assume !false; 1327#L569 assume test_~splverifierCounter~0 < 4; 1328#L570 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 1338#L578 assume !(0 != test_~tmp~7); 1352#L578-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 1353#L588 assume !(0 != test_~tmp___0~3); 1374#L588-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 1408#L598 assume 0 != test_~tmp___2~0; 1350#L604-2 assume !(0 != ~pumpRunning~0); 1368#L350 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1403#L408 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1317#L382-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1318#L179-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1381#L184-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1392#L528-3 assume !(0 != isHighWaterLevel_~tmp~5);isHighWaterLevel_~tmp___0~1 := 1; 1393#L528-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 1264#L534-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1265#L386-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1335#L357 havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1446#L139-2 __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 1444#L319 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 1290#L319-1 [2021-11-09 08:45:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:00,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-11-09 08:45:00,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:00,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096529735] [2021-11-09 08:45:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:00,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:00,673 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:45:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:00,731 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:45:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash 848812995, now seen corresponding path program 1 times [2021-11-09 08:45:00,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:00,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429019031] [2021-11-09 08:45:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:00,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:00,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:00,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429019031] [2021-11-09 08:45:00,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429019031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:00,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:00,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:45:00,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350578251] [2021-11-09 08:45:00,777 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 08:45:00,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:45:00,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:00,783 INFO L87 Difference]: Start difference. First operand 185 states and 253 transitions. cyclomatic complexity: 70 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-11-09 08:45:00,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:00,935 INFO L93 Difference]: Finished difference Result 439 states and 598 transitions. [2021-11-09 08:45:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:00,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 439 states and 598 transitions. [2021-11-09 08:45:00,942 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 310 [2021-11-09 08:45:00,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 439 states to 439 states and 598 transitions. [2021-11-09 08:45:00,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 439 [2021-11-09 08:45:00,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 439 [2021-11-09 08:45:00,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 439 states and 598 transitions. [2021-11-09 08:45:00,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:45:00,950 INFO L681 BuchiCegarLoop]: Abstraction has 439 states and 598 transitions. [2021-11-09 08:45:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states and 598 transitions. [2021-11-09 08:45:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 203. [2021-11-09 08:45:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 203 states have (on average 1.3349753694581281) internal successors, (271), 202 states have internal predecessors, (271), 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) [2021-11-09 08:45:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 271 transitions. [2021-11-09 08:45:00,972 INFO L704 BuchiCegarLoop]: Abstraction has 203 states and 271 transitions. [2021-11-09 08:45:00,972 INFO L587 BuchiCegarLoop]: Abstraction has 203 states and 271 transitions. [2021-11-09 08:45:00,972 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-09 08:45:00,972 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 203 states and 271 transitions. [2021-11-09 08:45:00,974 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2021-11-09 08:45:00,974 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:45:00,974 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:45:00,975 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:00,975 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] [2021-11-09 08:45:00,976 INFO L791 eck$LassoCheckResult]: Stem: 2057#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1977#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 1978#L75 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; 1950#L83 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 1951#L286 assume 0 != main_~tmp~0; 2012#L260 ~methAndRunningLastTime~0 := 0; 1927#L308 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1928#L319-1 [2021-11-09 08:45:00,976 INFO L793 eck$LassoCheckResult]: Loop: 1928#L319-1 assume !false; 2097#L569 assume test_~splverifierCounter~0 < 4; 2096#L570 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 2091#L578 assume !(0 != test_~tmp~7); 2089#L578-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 2088#L588 assume !(0 != test_~tmp___0~3); 2063#L588-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 2054#L598 assume 0 != test_~tmp___2~0; 1992#L604-2 assume !(0 != ~pumpRunning~0); 2010#L350 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2049#L408 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1954#L382-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1955#L179-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2025#L184-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 2058#L528-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2069#L528-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 1902#L534-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1903#L386-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1974#L357 havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2102#L139-2 __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 2100#L319 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 1928#L319-1 [2021-11-09 08:45:00,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:00,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-11-09 08:45:00,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:00,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832596990] [2021-11-09 08:45:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:00,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:01,017 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:45:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:01,068 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:45:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1606252737, now seen corresponding path program 1 times [2021-11-09 08:45:01,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:01,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375453571] [2021-11-09 08:45:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:01,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:01,080 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:45:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:01,091 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:45:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash 166888889, now seen corresponding path program 1 times [2021-11-09 08:45:01,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:01,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043693444] [2021-11-09 08:45:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:01,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:01,135 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:45:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:01,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:46:04,050 WARN L207 SmtUtils]: Spent 1.04 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-11-09 08:47:08,156 WARN L207 SmtUtils]: Spent 30.73 s on a formula simplification that was a NOOP. DAG size: 435 [2021-11-09 08:47:08,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 08:47:08 BoogieIcfgContainer [2021-11-09 08:47:08,424 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 08:47:08,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:47:08,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:47:08,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:47:08,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:44:58" (3/4) ... [2021-11-09 08:47:08,427 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-09 08:47:08,470 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:47:08,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:47:08,471 INFO L168 Benchmark]: Toolchain (without parser) took 131759.77 ms. Allocated memory was 88.1 MB in the beginning and 144.7 MB in the end (delta: 56.6 MB). Free memory was 63.2 MB in the beginning and 30.5 MB in the end (delta: 32.7 MB). Peak memory consumption was 88.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:47:08,471 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 61.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:47:08,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.64 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 55.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:47:08,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.33 ms. Allocated memory is still 88.1 MB. Free memory was 55.6 MB in the beginning and 51.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 08:47:08,473 INFO L168 Benchmark]: Boogie Preprocessor took 55.27 ms. Allocated memory is still 88.1 MB. Free memory was 51.6 MB in the beginning and 48.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:47:08,473 INFO L168 Benchmark]: RCFGBuilder took 1226.03 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 48.6 MB in the beginning and 58.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2021-11-09 08:47:08,474 INFO L168 Benchmark]: BuchiAutomizer took 129871.52 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 57.8 MB in the beginning and 32.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 60.8 MB. Max. memory is 16.1 GB. [2021-11-09 08:47:08,474 INFO L168 Benchmark]: Witness Printer took 45.66 ms. Allocated memory is still 144.7 MB. Free memory was 32.6 MB in the beginning and 30.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:47:08,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 61.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 473.64 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 55.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.33 ms. Allocated memory is still 88.1 MB. Free memory was 55.6 MB in the beginning and 51.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.27 ms. Allocated memory is still 88.1 MB. Free memory was 51.6 MB in the beginning and 48.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1226.03 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 48.6 MB in the beginning and 58.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 129871.52 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 57.8 MB in the beginning and 32.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 60.8 MB. Max. memory is 16.1 GB. * Witness Printer took 45.66 ms. Allocated memory is still 144.7 MB. Free memory was 32.6 MB in the beginning and 30.5 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 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 203 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 129.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 128.8s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 532 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 203 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1000 SDtfs, 1627 SDslu, 1109 SDs, 0 SdLazy, 194 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI3 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: 568]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=17836} State at position 1 is {NULL=0, NULL=17836, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56d0ec2b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5857fa3d=60, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b15901f=0, NULL=17851, NULL=17844, methaneLevelCritical=0, NULL=0, retValue_acc=0, tmp=0, NULL=17859, NULL=0, tmp___1=0, NULL=0, NULL=17849, cleanupTimeShifts=4, NULL=17838, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7813d10f=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=17841, retValue_acc=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=17857, NULL=0, NULL=0, tmp___0=0, NULL=0, tmp=1, NULL=17840, NULL=17837, methAndRunningLastTime=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43294be=0, NULL=17860, NULL=17855, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60dfd352=0, tmp=0, head=0, NULL=0, NULL=0, NULL=17862, NULL=17854, NULL=17856, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e55d8e1=0, retValue_acc=0, NULL=17850, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78ffb966=0, NULL=0, NULL=0, NULL=17848, NULL=0, NULL=0, NULL=17839, NULL=17843, tmp=0, NULL=0, systemActive=1, NULL=17853, NULL=0, \result=0, retValue_acc=0, NULL=17864, \result=0, NULL=17852, NULL=0, NULL=0, tmp___0=0, NULL=17858, NULL=17861, NULL=17863, retValue_acc=1, tmp___2=60, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=17842, NULL=17847, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74f7d812=0, tmp=0, NULL=17845, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73b4d0ad=0, NULL=0, NULL=17846} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L96] int waterLevel = 1; [L97] int methaneLevelCritical = 0; [L199] int cleanupTimeShifts = 4; [L302] int methAndRunningLastTime ; [L343] int pumpRunning = 0; [L344] int systemActive = 1; [L792] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L277] int retValue_acc ; [L278] int tmp ; [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); [L284] tmp = valid_product() [L286] COND TRUE \read(tmp) [L307] methAndRunningLastTime = 0 [L559] int splverifierCounter ; [L560] int tmp ; [L561] int tmp___0 ; [L562] int tmp___1 ; [L563] int tmp___2 ; [L566] splverifierCounter = 0 Loop: [L568] COND TRUE 1 [L570] COND TRUE splverifierCounter < 4 [L576] tmp = __VERIFIER_nondet_int() [L578] COND FALSE !(\read(tmp)) [L586] tmp___0 = __VERIFIER_nondet_int() [L588] COND FALSE !(\read(tmp___0)) [L596] tmp___2 = __VERIFIER_nondet_int() [L598] COND TRUE \read(tmp___2) [L350] COND FALSE !(\read(pumpRunning)) [L357] COND TRUE \read(systemActive) [L405] int tmp ; [L408] COND FALSE !(\read(pumpRunning)) [L379] int tmp ; [L382] COND TRUE ! pumpRunning [L520] int retValue_acc ; [L521] int tmp ; [L522] int tmp___0 ; [L176] int retValue_acc ; [L179] COND TRUE waterLevel < 2 [L180] retValue_acc = 1 [L181] return (retValue_acc); [L526] tmp = isHighWaterSensorDry() [L528] COND TRUE \read(tmp) [L529] tmp___0 = 0 [L533] retValue_acc = tmp___0 [L534] return (retValue_acc); [L384] tmp = isHighWaterLevel() [L386] COND FALSE !(\read(tmp)) [L312] int tmp ; [L313] int tmp___0 ; [L135] int retValue_acc ; [L138] retValue_acc = methaneLevelCritical [L139] return (retValue_acc); [L317] tmp = isMethaneLevelCritical() [L319] COND FALSE !(\read(tmp)) [L335] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-09 08:47:08,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68e8ce93-241e-41dc-8aa7-23bf74a6e0e5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)