./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF --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 55ce316e71b3537e039a3a4d2127e4eace2c49bce87df09105114bd008c08800 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:19:16,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:19:16,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:19:16,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:19:16,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:19:16,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:19:16,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:19:16,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:19:16,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:19:16,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:19:16,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:19:16,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:19:16,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:19:16,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:19:16,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:19:16,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:19:16,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:19:16,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:19:16,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:19:16,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:19:16,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:19:16,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:19:16,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:19:16,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:19:16,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:19:16,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:19:16,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:19:16,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:19:16,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:19:16,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:19:16,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:19:16,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:19:16,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:19:16,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:19:16,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:19:16,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:19:16,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:19:16,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:19:16,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:19:16,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:19:16,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:19:16,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-20 07:19:16,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:19:16,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:19:16,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:19:16,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:19:16,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:19:16,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:19:16,649 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:19:16,649 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 07:19:16,649 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 07:19:16,649 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 07:19:16,650 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 07:19:16,650 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 07:19:16,650 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 07:19:16,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:19:16,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:19:16,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:19:16,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:19:16,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:19:16,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:19:16,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 07:19:16,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 07:19:16,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 07:19:16,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:19:16,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:19:16,652 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 07:19:16,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:19:16,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 07:19:16,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:19:16,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:19:16,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:19:16,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:19:16,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:19:16,655 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 07:19:16,656 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_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55ce316e71b3537e039a3a4d2127e4eace2c49bce87df09105114bd008c08800 [2021-11-20 07:19:16,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:19:16,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:19:16,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:19:16,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:19:16,985 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:19:16,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2021-11-20 07:19:17,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/data/000ea7203/2be191c8d4854f98af3cf32993358a50/FLAGa61fde728 [2021-11-20 07:19:17,685 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:19:17,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2021-11-20 07:19:17,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/data/000ea7203/2be191c8d4854f98af3cf32993358a50/FLAGa61fde728 [2021-11-20 07:19:17,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/data/000ea7203/2be191c8d4854f98af3cf32993358a50 [2021-11-20 07:19:17,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:19:17,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:19:17,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:19:17,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:19:17,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:19:17,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:19:17" (1/1) ... [2021-11-20 07:19:17,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8e594d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:17, skipping insertion in model container [2021-11-20 07:19:17,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:19:17" (1/1) ... [2021-11-20 07:19:17,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:19:18,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:19:18,269 WARN L230 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_a6f5c341-545e-47b4-8d92-d2597bc5bae2/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c[2044,2057] [2021-11-20 07:19:18,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:19:18,401 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:19:18,418 WARN L230 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_a6f5c341-545e-47b4-8d92-d2597bc5bae2/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c[2044,2057] [2021-11-20 07:19:18,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:19:18,584 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:19:18,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18 WrapperNode [2021-11-20 07:19:18,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:19:18,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:19:18,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:19:18,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:19:18,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,707 INFO L137 Inliner]: procedures = 56, calls = 158, calls flagged for inlining = 55, calls inlined = 137, statements flattened = 1001 [2021-11-20 07:19:18,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:19:18,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:19:18,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:19:18,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:19:18,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:19:18,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:19:18,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:19:18,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:19:18,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (1/1) ... [2021-11-20 07:19:18,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:19:18,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:19:18,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:19:18,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 07:19:18,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:19:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:19:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:19:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:19:19,043 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:19:19,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:19:19,906 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:19:19,920 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:19:19,920 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 07:19:19,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:19:19 BoogieIcfgContainer [2021-11-20 07:19:19,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:19:19,924 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 07:19:19,925 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 07:19:19,928 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 07:19:19,929 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:19:19,929 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:19:17" (1/3) ... [2021-11-20 07:19:19,931 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cb5b50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:19:19, skipping insertion in model container [2021-11-20 07:19:19,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:19:19,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:18" (2/3) ... [2021-11-20 07:19:19,932 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cb5b50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:19:19, skipping insertion in model container [2021-11-20 07:19:19,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:19:19,932 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:19:19" (3/3) ... [2021-11-20 07:19:19,934 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2021-11-20 07:19:20,001 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 07:19:20,001 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 07:19:20,001 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 07:19:20,001 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 07:19:20,001 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 07:19:20,002 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 07:19:20,002 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 07:19:20,002 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 07:19:20,045 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 270 states, 269 states have (on average 1.3717472118959109) internal successors, (369), 269 states have internal predecessors, (369), 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) [2021-11-20 07:19:20,105 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 176 [2021-11-20 07:19:20,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:19:20,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:19:20,122 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:20,122 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:20,122 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 07:19:20,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 270 states, 269 states have (on average 1.3717472118959109) internal successors, (369), 269 states have internal predecessors, (369), 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) [2021-11-20 07:19:20,146 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 176 [2021-11-20 07:19:20,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:19:20,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:19:20,148 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:20,148 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:20,154 INFO L791 eck$LassoCheckResult]: Stem: 259#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 176#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~3#1, main_~tmp~4#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 215#L874true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 249#L867true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 174#L882true main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 106#L544true assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 223#L517true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet44#1, test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 33#L797-2true [2021-11-20 07:19:20,155 INFO L793 eck$LassoCheckResult]: Loop: 33#L797-2true assume !false; 180#L798true assume test_~splverifierCounter~0#1 < 4; 127#L799true test_~tmp~10#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 147#L807true assume !(0 != test_~tmp~10#1); 205#L807-2true test_~tmp___0~3#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 65#L817true assume !(0 != test_~tmp___0~3#1); 148#L817-2true test_~tmp___2~0#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 139#L827true assume 0 != test_~tmp___2~0#1; 192#L833-2true assume { :begin_inline_timeShift } true; 119#L571true assume !(0 != ~pumpRunning~0); 172#L571-2true assume !(0 != ~systemActive~0); 181#L578-1true assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 124#L931-1true __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 76#L61true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 110#L61-1true assume { :end_inline___utac_acc__Specification1_spec__1 } true; 95#L588true assume { :end_inline_timeShift } true; 33#L797-2true [2021-11-20 07:19:20,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-11-20 07:19:20,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:20,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308167661] [2021-11-20 07:19:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:20,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:20,291 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:20,354 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash 408252804, now seen corresponding path program 1 times [2021-11-20 07:19:20,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:20,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939263094] [2021-11-20 07:19:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:20,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:20,368 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:20,380 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1763671880, now seen corresponding path program 1 times [2021-11-20 07:19:20,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:20,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722146625] [2021-11-20 07:19:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:20,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:19:20,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722146625] [2021-11-20 07:19:20,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722146625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:19:20,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:19:20,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:19:20,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786586679] [2021-11-20 07:19:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:19:20,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:19:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:19:20,761 INFO L87 Difference]: Start difference. First operand has 270 states, 269 states have (on average 1.3717472118959109) internal successors, (369), 269 states have internal predecessors, (369), 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 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:19:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:20,931 INFO L93 Difference]: Finished difference Result 267 states and 355 transitions. [2021-11-20 07:19:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:19:20,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 267 states and 355 transitions. [2021-11-20 07:19:20,960 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 172 [2021-11-20 07:19:20,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 267 states to 257 states and 345 transitions. [2021-11-20 07:19:20,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2021-11-20 07:19:20,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2021-11-20 07:19:20,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 257 states and 345 transitions. [2021-11-20 07:19:20,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:19:20,974 INFO L681 BuchiCegarLoop]: Abstraction has 257 states and 345 transitions. [2021-11-20 07:19:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states and 345 transitions. [2021-11-20 07:19:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-11-20 07:19:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 257 states have (on average 1.3424124513618676) internal successors, (345), 256 states have internal predecessors, (345), 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) [2021-11-20 07:19:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 345 transitions. [2021-11-20 07:19:21,020 INFO L704 BuchiCegarLoop]: Abstraction has 257 states and 345 transitions. [2021-11-20 07:19:21,021 INFO L587 BuchiCegarLoop]: Abstraction has 257 states and 345 transitions. [2021-11-20 07:19:21,021 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 07:19:21,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 257 states and 345 transitions. [2021-11-20 07:19:21,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 172 [2021-11-20 07:19:21,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:19:21,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:19:21,031 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:21,031 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:21,031 INFO L791 eck$LassoCheckResult]: Stem: 811#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 783#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~3#1, main_~tmp~4#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 784#L874 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 803#L867 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 782#L882 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 723#L544 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 724#L517 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet44#1, test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 608#L797-2 [2021-11-20 07:19:21,032 INFO L793 eck$LassoCheckResult]: Loop: 608#L797-2 assume !false; 609#L798 assume test_~splverifierCounter~0#1 < 4; 743#L799 test_~tmp~10#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 744#L807 assume !(0 != test_~tmp~10#1); 765#L807-2 test_~tmp___0~3#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 664#L817 assume !(0 != test_~tmp___0~3#1); 601#L817-2 test_~tmp___2~0#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 756#L827 assume 0 != test_~tmp___2~0#1; 648#L833-2 assume { :begin_inline_timeShift } true; 732#L571 assume !(0 != ~pumpRunning~0); 733#L571-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret32#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 621#L655 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret33#1, isMethaneAlarm_~retValue_acc~4#1;havoc isMethaneAlarm_~retValue_acc~4#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 575#L931 isMethaneAlarm_#t~ret33#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~4#1 := isMethaneAlarm_#t~ret33#1;havoc isMethaneAlarm_#t~ret33#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~4#1; 576#L699 processEnvironment_#t~ret32#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~7#1 := processEnvironment_#t~ret32#1;havoc processEnvironment_#t~ret32#1; 777#L659 assume 0 != processEnvironment_~tmp~7#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 778#L689 assume { :end_inline_deactivatePump } true; 597#L655-1 assume { :end_inline_processEnvironment } true; 781#L578-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 739#L931-1 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 677#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 678#L61-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 708#L588 assume { :end_inline_timeShift } true; 608#L797-2 [2021-11-20 07:19:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-11-20 07:19:21,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:21,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939319057] [2021-11-20 07:19:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:21,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:21,058 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:21,087 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash -49321715, now seen corresponding path program 1 times [2021-11-20 07:19:21,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:21,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921164918] [2021-11-20 07:19:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:21,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:19:21,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:21,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921164918] [2021-11-20 07:19:21,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921164918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:19:21,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:19:21,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:19:21,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394124095] [2021-11-20 07:19:21,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:19:21,131 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 07:19:21,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:19:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:19:21,133 INFO L87 Difference]: Start difference. First operand 257 states and 345 transitions. cyclomatic complexity: 90 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-20 07:19:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:21,275 INFO L93 Difference]: Finished difference Result 267 states and 338 transitions. [2021-11-20 07:19:21,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:19:21,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 267 states and 338 transitions. [2021-11-20 07:19:21,284 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 184 [2021-11-20 07:19:21,292 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 267 states to 267 states and 338 transitions. [2021-11-20 07:19:21,292 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 267 [2021-11-20 07:19:21,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 267 [2021-11-20 07:19:21,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 267 states and 338 transitions. [2021-11-20 07:19:21,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:19:21,307 INFO L681 BuchiCegarLoop]: Abstraction has 267 states and 338 transitions. [2021-11-20 07:19:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states and 338 transitions. [2021-11-20 07:19:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-20 07:19:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 267 states have (on average 1.2659176029962547) internal successors, (338), 266 states have internal predecessors, (338), 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) [2021-11-20 07:19:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 338 transitions. [2021-11-20 07:19:21,341 INFO L704 BuchiCegarLoop]: Abstraction has 267 states and 338 transitions. [2021-11-20 07:19:21,341 INFO L587 BuchiCegarLoop]: Abstraction has 267 states and 338 transitions. [2021-11-20 07:19:21,341 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 07:19:21,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 267 states and 338 transitions. [2021-11-20 07:19:21,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 184 [2021-11-20 07:19:21,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:19:21,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:19:21,350 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:21,351 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:21,352 INFO L791 eck$LassoCheckResult]: Stem: 1297#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1278#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~3#1, main_~tmp~4#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 1279#L874 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1290#L867 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 1277#L882 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 1225#L544 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 1226#L517 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet44#1, test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1127#L797-2 [2021-11-20 07:19:21,353 INFO L793 eck$LassoCheckResult]: Loop: 1127#L797-2 assume !false; 1128#L798 assume test_~splverifierCounter~0#1 < 4; 1247#L799 test_~tmp~10#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 1248#L807 assume !(0 != test_~tmp~10#1); 1260#L807-2 test_~tmp___0~3#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 1180#L817 assume !(0 != test_~tmp___0~3#1); 1118#L817-2 test_~tmp___2~0#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 1257#L827 assume 0 != test_~tmp___2~0#1; 1162#L833-2 assume { :begin_inline_timeShift } true; 1238#L571 assume !(0 != ~pumpRunning~0); 1239#L571-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret32#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 1138#L655 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret31#1, processEnvironment__wrappee__lowWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6#1; 1139#L629-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret30#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 1266#L603-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret42#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 1142#L971-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 1143#L976-3 isHighWaterLevel_#t~ret42#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret42#1;havoc isHighWaterLevel_#t~ret42#1; 1136#L757-9 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1137#L757-11 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 1148#L763-3 processEnvironment__wrappee__highWaterSensor_#t~ret30#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret30#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret30#1; 1149#L607-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1150#L595-6 assume { :end_inline_processEnvironment__wrappee__base } true; 1250#L603-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1115#L629-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 1116#L655-1 assume { :end_inline_processEnvironment } true; 1276#L578-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 1243#L931-1 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 1189#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 1190#L61-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 1212#L588 assume { :end_inline_timeShift } true; 1127#L797-2 [2021-11-20 07:19:21,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:21,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-11-20 07:19:21,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:21,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621677843] [2021-11-20 07:19:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:21,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:21,404 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:21,446 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:21,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1895097644, now seen corresponding path program 1 times [2021-11-20 07:19:21,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:21,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400638478] [2021-11-20 07:19:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:21,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:19:21,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:21,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400638478] [2021-11-20 07:19:21,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400638478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:19:21,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:19:21,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:19:21,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155217968] [2021-11-20 07:19:21,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:19:21,492 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 07:19:21,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:19:21,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:19:21,494 INFO L87 Difference]: Start difference. First operand 267 states and 338 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-20 07:19:21,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:21,656 INFO L93 Difference]: Finished difference Result 751 states and 928 transitions. [2021-11-20 07:19:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:19:21,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 751 states and 928 transitions. [2021-11-20 07:19:21,668 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 528 [2021-11-20 07:19:21,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 751 states to 751 states and 928 transitions. [2021-11-20 07:19:21,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 751 [2021-11-20 07:19:21,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 751 [2021-11-20 07:19:21,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 751 states and 928 transitions. [2021-11-20 07:19:21,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:19:21,679 INFO L681 BuchiCegarLoop]: Abstraction has 751 states and 928 transitions. [2021-11-20 07:19:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states and 928 transitions. [2021-11-20 07:19:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 285. [2021-11-20 07:19:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 285 states have (on average 1.249122807017544) internal successors, (356), 284 states have internal predecessors, (356), 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) [2021-11-20 07:19:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 356 transitions. [2021-11-20 07:19:21,710 INFO L704 BuchiCegarLoop]: Abstraction has 285 states and 356 transitions. [2021-11-20 07:19:21,710 INFO L587 BuchiCegarLoop]: Abstraction has 285 states and 356 transitions. [2021-11-20 07:19:21,710 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 07:19:21,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 285 states and 356 transitions. [2021-11-20 07:19:21,713 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 196 [2021-11-20 07:19:21,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:19:21,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:19:21,714 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:21,715 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:21,715 INFO L791 eck$LassoCheckResult]: Stem: 2344#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2316#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~3#1, main_~tmp~4#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 2317#L874 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2333#L867 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 2315#L882 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 2257#L544 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 2258#L517 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet44#1, test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2153#L797-2 [2021-11-20 07:19:21,715 INFO L793 eck$LassoCheckResult]: Loop: 2153#L797-2 assume !false; 2154#L798 assume test_~splverifierCounter~0#1 < 4; 2282#L799 test_~tmp~10#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 2283#L807 assume !(0 != test_~tmp~10#1); 2296#L807-2 test_~tmp___0~3#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 2210#L817 assume !(0 != test_~tmp___0~3#1); 2146#L817-2 test_~tmp___2~0#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 2293#L827 assume 0 != test_~tmp___2~0#1; 2191#L833-2 assume { :begin_inline_timeShift } true; 2269#L571 assume !(0 != ~pumpRunning~0); 2270#L571-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret32#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 2166#L655 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret31#1, processEnvironment__wrappee__lowWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6#1; 2167#L629-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret30#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 2303#L603-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret42#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 2170#L971-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 2171#L976-3 isHighWaterLevel_#t~ret42#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret42#1;havoc isHighWaterLevel_#t~ret42#1; 2164#L757-9 assume !(0 != isHighWaterLevel_~tmp~8#1);isHighWaterLevel_~tmp___0~1#1 := 1; 2165#L757-11 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 2177#L763-3 processEnvironment__wrappee__highWaterSensor_#t~ret30#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret30#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret30#1; 2178#L607-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2179#L595-6 assume { :end_inline_processEnvironment__wrappee__base } true; 2284#L603-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2143#L629-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 2144#L655-1 assume { :end_inline_processEnvironment } true; 2314#L578-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 2277#L931-1 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 2219#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 2220#L61-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 2243#L588 assume { :end_inline_timeShift } true; 2153#L797-2 [2021-11-20 07:19:21,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-11-20 07:19:21,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:21,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545796289] [2021-11-20 07:19:21,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:21,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:21,754 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:21,774 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1308291630, now seen corresponding path program 1 times [2021-11-20 07:19:21,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:21,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095761343] [2021-11-20 07:19:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:21,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:19:21,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:21,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095761343] [2021-11-20 07:19:21,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095761343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:19:21,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:19:21,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:19:21,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297965763] [2021-11-20 07:19:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:19:21,826 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 07:19:21,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:19:21,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:19:21,827 INFO L87 Difference]: Start difference. First operand 285 states and 356 transitions. cyclomatic complexity: 73 Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-20 07:19:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:22,058 INFO L93 Difference]: Finished difference Result 652 states and 808 transitions. [2021-11-20 07:19:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:19:22,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 652 states and 808 transitions. [2021-11-20 07:19:22,068 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 462 [2021-11-20 07:19:22,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 652 states to 652 states and 808 transitions. [2021-11-20 07:19:22,076 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 652 [2021-11-20 07:19:22,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 652 [2021-11-20 07:19:22,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 652 states and 808 transitions. [2021-11-20 07:19:22,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:19:22,079 INFO L681 BuchiCegarLoop]: Abstraction has 652 states and 808 transitions. [2021-11-20 07:19:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states and 808 transitions. [2021-11-20 07:19:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 312. [2021-11-20 07:19:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 312 states have (on average 1.2275641025641026) internal successors, (383), 311 states have internal predecessors, (383), 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) [2021-11-20 07:19:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 383 transitions. [2021-11-20 07:19:22,094 INFO L704 BuchiCegarLoop]: Abstraction has 312 states and 383 transitions. [2021-11-20 07:19:22,094 INFO L587 BuchiCegarLoop]: Abstraction has 312 states and 383 transitions. [2021-11-20 07:19:22,094 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 07:19:22,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 312 states and 383 transitions. [2021-11-20 07:19:22,097 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 214 [2021-11-20 07:19:22,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:19:22,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:19:22,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:22,101 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:22,101 INFO L791 eck$LassoCheckResult]: Stem: 3307#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 3271#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~3#1, main_~tmp~4#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 3272#L874 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3290#L867 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 3270#L882 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 3209#L544 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 3210#L517 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet44#1, test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3104#L797-2 [2021-11-20 07:19:22,101 INFO L793 eck$LassoCheckResult]: Loop: 3104#L797-2 assume !false; 3105#L798 assume test_~splverifierCounter~0#1 < 4; 3275#L799 test_~tmp~10#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 3351#L807 assume !(0 != test_~tmp~10#1); 3348#L807-2 test_~tmp___0~3#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 3346#L817 assume !(0 != test_~tmp___0~3#1); 3251#L817-2 test_~tmp___2~0#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 3247#L827 assume 0 != test_~tmp___2~0#1; 3140#L833-2 assume { :begin_inline_timeShift } true; 3224#L571 assume !(0 != ~pumpRunning~0); 3225#L571-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret32#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 3116#L655 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret31#1, processEnvironment__wrappee__lowWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6#1; 3117#L629-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret30#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 3259#L603-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret42#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 3120#L971-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 3122#L976-3 isHighWaterLevel_#t~ret42#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret42#1;havoc isHighWaterLevel_#t~ret42#1; 3319#L757-9 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3318#L757-11 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 3316#L763-3 processEnvironment__wrappee__highWaterSensor_#t~ret30#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret30#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret30#1; 3314#L607-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3296#L595-6 assume { :end_inline_processEnvironment__wrappee__base } true; 3297#L603-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3375#L629-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 3291#L655-1 assume { :end_inline_processEnvironment } true; 3374#L578-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 3373#L931-1 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 3371#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 3216#L61-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 3195#L588 assume { :end_inline_timeShift } true; 3104#L797-2 [2021-11-20 07:19:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2021-11-20 07:19:22,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:22,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145465935] [2021-11-20 07:19:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:22,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:22,138 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:22,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1120005974, now seen corresponding path program 1 times [2021-11-20 07:19:22,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:22,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352170143] [2021-11-20 07:19:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:22,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:22,170 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:22,192 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1245740698, now seen corresponding path program 1 times [2021-11-20 07:19:22,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:22,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334835489] [2021-11-20 07:19:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:22,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:22,207 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:19:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:19:22,229 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:19:26,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:19:26 BoogieIcfgContainer [2021-11-20 07:19:26,068 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 07:19:26,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:19:26,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:19:26,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:19:26,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:19:19" (3/4) ... [2021-11-20 07:19:26,080 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-20 07:19:26,200 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:19:26,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:19:26,201 INFO L158 Benchmark]: Toolchain (without parser) took 8249.69ms. Allocated memory was 83.9MB in the beginning and 201.3MB in the end (delta: 117.4MB). Free memory was 48.3MB in the beginning and 109.4MB in the end (delta: -61.1MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2021-11-20 07:19:26,202 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:19:26,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.28ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 48.3MB in the beginning and 87.5MB in the end (delta: -39.3MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-11-20 07:19:26,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.62ms. Allocated memory is still 119.5MB. Free memory was 87.5MB in the beginning and 83.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 07:19:26,204 INFO L158 Benchmark]: Boogie Preprocessor took 115.43ms. Allocated memory is still 119.5MB. Free memory was 83.1MB in the beginning and 79.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 07:19:26,205 INFO L158 Benchmark]: RCFGBuilder took 1098.51ms. Allocated memory is still 119.5MB. Free memory was 79.7MB in the beginning and 79.5MB in the end (delta: 257.4kB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-11-20 07:19:26,205 INFO L158 Benchmark]: BuchiAutomizer took 6143.75ms. Allocated memory was 119.5MB in the beginning and 201.3MB in the end (delta: 81.8MB). Free memory was 79.5MB in the beginning and 111.5MB in the end (delta: -32.0MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. [2021-11-20 07:19:26,206 INFO L158 Benchmark]: Witness Printer took 131.77ms. Allocated memory is still 201.3MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:19:26,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.28ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 48.3MB in the beginning and 87.5MB in the end (delta: -39.3MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.62ms. Allocated memory is still 119.5MB. Free memory was 87.5MB in the beginning and 83.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 115.43ms. Allocated memory is still 119.5MB. Free memory was 83.1MB in the beginning and 79.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1098.51ms. Allocated memory is still 119.5MB. Free memory was 79.7MB in the beginning and 79.5MB in the end (delta: 257.4kB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 6143.75ms. Allocated memory was 119.5MB in the beginning and 201.3MB in the end (delta: 81.8MB). Free memory was 79.5MB in the beginning and 111.5MB in the end (delta: -32.0MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. * Witness Printer took 131.77ms. Allocated memory is still 201.3MB. Free memory was 111.5MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 312 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.0s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 4.8s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 806 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 312 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2845 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2845 mSDsluCounter, 3064 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1580 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 279 IncrementalHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 1484 mSDtfsCounter, 279 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown 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: 797]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70e54f66=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4de532da=0, NULL=0, tmp___0=0, head=0, pumpRunning=0, tmp___0=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@309ca5d2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69e38dd2=0, tmp=0, methaneLevelCritical=0, retValue_acc=1, retValue_acc=0, retValue_acc=1, \result=0, retValue_acc=0, tmp=1, \result=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3486cfdf=0, tmp___2=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f51b24c=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2032e4ce=0, cleanupTimeShifts=4, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5147f7e6=0, tmp=0, head=0, tmp___1=0, NULL=0, retValue_acc=0, tmp=0, waterLevel=1, systemActive=1, tmp=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16ea3b22=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d63fa50=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@141d257d=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 797]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L454] int cleanupTimeShifts = 4; [L564] int pumpRunning = 0; [L565] int systemActive = 1; [L888] int waterLevel = 1; [L889] int methaneLevelCritical = 0; [L535] int retValue_acc ; [L536] int tmp ; [L540] FCALL select_helpers() [L541] FCALL select_features() [L542] CALL, EXPR valid_product() [L878] int retValue_acc ; [L881] retValue_acc = 1 [L882] return (retValue_acc); [L542] RET, EXPR valid_product() [L542] tmp = valid_product() [L544] COND TRUE \read(tmp) [L546] FCALL setup() [L547] CALL runTest() [L526] CALL test() [L788] int splverifierCounter ; [L789] int tmp ; [L790] int tmp___0 ; [L791] int tmp___1 ; [L792] int tmp___2 ; [L795] splverifierCounter = 0 Loop: [L797] COND TRUE 1 [L799] COND TRUE splverifierCounter < 4 [L805] tmp = __VERIFIER_nondet_int() [L807] COND FALSE !(\read(tmp)) [L815] tmp___0 = __VERIFIER_nondet_int() [L817] COND FALSE !(\read(tmp___0)) [L825] tmp___2 = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp___2) [L840] CALL timeShift() [L571] COND FALSE !(\read(pumpRunning)) [L578] COND TRUE \read(systemActive) [L580] CALL processEnvironment() [L652] int tmp ; [L655] COND FALSE !(\read(pumpRunning)) [L670] CALL processEnvironment__wrappee__lowWaterSensor() [L626] int tmp ; [L629] COND FALSE !(\read(pumpRunning)) [L644] CALL processEnvironment__wrappee__highWaterSensor() [L600] int tmp ; [L603] COND TRUE ! pumpRunning [L605] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L968] int retValue_acc ; [L971] COND TRUE waterLevel < 2 [L972] retValue_acc = 1 [L973] return (retValue_acc); [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND TRUE \read(tmp) [L758] tmp___0 = 0 [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); [L605] RET, EXPR isHighWaterLevel() [L605] tmp = isHighWaterLevel() [L607] COND FALSE !(\read(tmp)) [L613] FCALL processEnvironment__wrappee__base() [L644] RET processEnvironment__wrappee__highWaterSensor() [L670] RET processEnvironment__wrappee__lowWaterSensor() [L580] RET processEnvironment() [L586] CALL __utac_acc__Specification1_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR isMethaneLevelCritical() [L927] int retValue_acc ; [L930] retValue_acc = methaneLevelCritical [L931] return (retValue_acc); [L59] RET, EXPR isMethaneLevelCritical() [L59] tmp = isMethaneLevelCritical() [L61] COND FALSE !(\read(tmp)) [L586] RET __utac_acc__Specification1_spec__1() [L840] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-20 07:19:26,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f5c341-545e-47b4-8d92-d2597bc5bae2/bin/uautomizer-DQz5hQGWxF/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)