./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product55.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e826f48819dedbf1a290c3ced69eb835c065ed69febc6d0054f416e73afcb1c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:56:22,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:56:22,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:56:22,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:56:22,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:56:22,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:56:22,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:56:22,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:56:22,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:56:22,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:56:22,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:56:22,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:56:22,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:56:22,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:56:22,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:56:22,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:56:22,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:56:22,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:56:22,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:56:22,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:56:22,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:56:22,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:56:22,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:56:22,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:56:22,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:56:22,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:56:22,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:56:22,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:56:22,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:56:22,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:56:22,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:56:22,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:56:22,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:56:22,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:56:22,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:56:22,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:56:22,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:56:22,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:56:22,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:56:22,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:56:22,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:56:22,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:56:22,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:56:22,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:56:22,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:56:22,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:56:22,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:56:22,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:56:22,642 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:56:22,642 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:56:22,642 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:56:22,643 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:56:22,643 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:56:22,643 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:56:22,644 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:56:22,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:56:22,644 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:56:22,645 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:56:22,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:56:22,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:56:22,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:56:22,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:56:22,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:56:22,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:56:22,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:56:22,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:56:22,647 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:56:22,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:56:22,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:56:22,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:56:22,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:56:22,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:56:22,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:56:22,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:56:22,651 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:56:22,651 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_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e826f48819dedbf1a290c3ced69eb835c065ed69febc6d0054f416e73afcb1c [2021-10-28 23:56:23,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:56:23,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:56:23,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:56:23,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:56:23,075 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:56:23,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec5_product55.cil.c [2021-10-28 23:56:23,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/data/1f73b752e/76db243e4c0840779f1e3b6d34a5304c/FLAGef94b2f99 [2021-10-28 23:56:23,900 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:56:23,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/sv-benchmarks/c/product-lines/minepump_spec5_product55.cil.c [2021-10-28 23:56:23,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/data/1f73b752e/76db243e4c0840779f1e3b6d34a5304c/FLAGef94b2f99 [2021-10-28 23:56:24,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/data/1f73b752e/76db243e4c0840779f1e3b6d34a5304c [2021-10-28 23:56:24,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:56:24,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:56:24,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:56:24,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:56:24,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:56:24,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:56:24" (1/1) ... [2021-10-28 23:56:24,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a06beb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:24, skipping insertion in model container [2021-10-28 23:56:24,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:56:24" (1/1) ... [2021-10-28 23:56:24,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:56:24,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:56:24,701 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/sv-benchmarks/c/product-lines/minepump_spec5_product55.cil.c[13125,13138] [2021-10-28 23:56:24,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:56:24,841 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:56:24,960 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/sv-benchmarks/c/product-lines/minepump_spec5_product55.cil.c[13125,13138] [2021-10-28 23:56:25,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:56:25,050 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:56:25,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25 WrapperNode [2021-10-28 23:56:25,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:56:25,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:56:25,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:56:25,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:56:25,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:56:25,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:56:25,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:56:25,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:56:25,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:56:25,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:56:25,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:56:25,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:56:25,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (1/1) ... [2021-10-28 23:56:25,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:56:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:56:25,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:56:25,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:56:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:56:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:56:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:56:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:56:26,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:56:26,912 INFO L299 CfgBuilder]: Removed 294 assume(true) statements. [2021-10-28 23:56:26,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:56:26 BoogieIcfgContainer [2021-10-28 23:56:26,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:56:26,917 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:56:26,917 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:56:26,921 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:56:26,923 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:56:26,923 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:56:24" (1/3) ... [2021-10-28 23:56:26,925 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cb30142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:56:26, skipping insertion in model container [2021-10-28 23:56:26,925 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:56:26,926 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:25" (2/3) ... [2021-10-28 23:56:26,926 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cb30142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:56:26, skipping insertion in model container [2021-10-28 23:56:26,927 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:56:26,927 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:56:26" (3/3) ... [2021-10-28 23:56:26,929 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2021-10-28 23:56:27,043 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:56:27,043 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:56:27,043 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:56:27,044 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:56:27,044 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:56:27,044 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:56:27,044 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:56:27,044 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:56:27,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:27,136 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-10-28 23:56:27,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:56:27,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:56:27,153 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:27,153 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:27,153 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:56:27,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:27,186 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-10-28 23:56:27,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:56:27,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:56:27,189 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:27,189 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:27,212 INFO L791 eck$LassoCheckResult]: Stem: 193#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 139#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 86#L544true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 140#L552true main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 22#L508true assume 0 != main_~tmp~3; 152#L479true ~switchedOnBeforeTS~0 := 0; 183#L995true havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 48#L1016-1true [2021-10-28 23:56:27,224 INFO L793 eck$LassoCheckResult]: Loop: 48#L1016-1true assume !false; 142#L578true assume test_~splverifierCounter~0 < 4; 116#L579true test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 101#L587true assume !(0 != test_~tmp~4); 31#L587-1true test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 91#L597true assume !(0 != test_~tmp___0~0); 9#L597-1true test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 24#L607true assume 0 != test_~tmp___2~0; 96#L613-1true havoc __utac_acc__Specification5_spec__2_#t~ret80;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 67#L895true __utac_acc__Specification5_spec__2_#t~ret80 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret80;havoc __utac_acc__Specification5_spec__2_#t~ret80; 42#L1005true assume !(0 != ~pumpRunning~0); 81#L758true assume !(0 != ~systemActive~0); 172#L765true havoc __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_#t~ret82, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 7#L715true __utac_acc__Specification5_spec__3_#t~ret81 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 119#L1016true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 48#L1016-1true [2021-10-28 23:56:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 23:56:27,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:27,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280858260] [2021-10-28 23:56:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:27,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:27,652 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:27,916 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash -236750955, now seen corresponding path program 1 times [2021-10-28 23:56:27,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:27,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504656366] [2021-10-28 23:56:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:27,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:27,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:27,946 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1697274255, now seen corresponding path program 1 times [2021-10-28 23:56:27,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:27,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67366874] [2021-10-28 23:56:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:27,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:28,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:28,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67366874] [2021-10-28 23:56:28,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67366874] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:28,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:28,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:56:28,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225385815] [2021-10-28 23:56:28,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:28,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:56:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:56:28,530 INFO L87 Difference]: Start difference. First operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 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 3.6666666666666665) internal successors, (22), 5 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) [2021-10-28 23:56:28,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:28,895 INFO L93 Difference]: Finished difference Result 445 states and 652 transitions. [2021-10-28 23:56:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:56:28,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 445 states and 652 transitions. [2021-10-28 23:56:28,934 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 291 [2021-10-28 23:56:28,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 445 states to 424 states and 631 transitions. [2021-10-28 23:56:28,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 424 [2021-10-28 23:56:28,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 424 [2021-10-28 23:56:28,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 424 states and 631 transitions. [2021-10-28 23:56:28,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:56:28,960 INFO L681 BuchiCegarLoop]: Abstraction has 424 states and 631 transitions. [2021-10-28 23:56:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states and 631 transitions. [2021-10-28 23:56:29,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 239. [2021-10-28 23:56:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 239 states have (on average 1.4769874476987448) internal successors, (353), 238 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:29,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 353 transitions. [2021-10-28 23:56:29,028 INFO L704 BuchiCegarLoop]: Abstraction has 239 states and 353 transitions. [2021-10-28 23:56:29,029 INFO L587 BuchiCegarLoop]: Abstraction has 239 states and 353 transitions. [2021-10-28 23:56:29,031 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:56:29,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 239 states and 353 transitions. [2021-10-28 23:56:29,036 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2021-10-28 23:56:29,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:56:29,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:56:29,038 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:29,039 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:29,039 INFO L791 eck$LassoCheckResult]: Stem: 849#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 763#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 764#L544 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 765#L552 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 741#L508 assume 0 != main_~tmp~3; 742#L479 ~switchedOnBeforeTS~0 := 0; 806#L995 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 693#L1016-1 [2021-10-28 23:56:29,039 INFO L793 eck$LassoCheckResult]: Loop: 693#L1016-1 assume !false; 770#L578 assume test_~splverifierCounter~0 < 4; 685#L579 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 686#L587 assume !(0 != test_~tmp~4); 733#L587-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 759#L597 assume !(0 != test_~tmp___0~0); 700#L597-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 701#L607 assume 0 != test_~tmp___2~0; 745#L613-1 havoc __utac_acc__Specification5_spec__2_#t~ret80;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 827#L895 __utac_acc__Specification5_spec__2_#t~ret80 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret80;havoc __utac_acc__Specification5_spec__2_#t~ret80; 779#L1005 assume !(0 != ~pumpRunning~0); 781#L758 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 784#L842 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret59, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 786#L816-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret58, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 748#L790-3 assume !(0 == ~pumpRunning~0); 699#L765 havoc __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_#t~ret82, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 695#L715 __utac_acc__Specification5_spec__3_#t~ret81 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 691#L1016 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 693#L1016-1 [2021-10-28 23:56:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:29,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 23:56:29,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:29,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337655526] [2021-10-28 23:56:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:29,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:29,139 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:29,286 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1192194302, now seen corresponding path program 1 times [2021-10-28 23:56:29,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:29,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785355723] [2021-10-28 23:56:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:29,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:29,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:29,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785355723] [2021-10-28 23:56:29,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785355723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:29,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:29,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:56:29,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537609020] [2021-10-28 23:56:29,344 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:56:29,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:56:29,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:56:29,346 INFO L87 Difference]: Start difference. First operand 239 states and 353 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:29,582 INFO L93 Difference]: Finished difference Result 250 states and 344 transitions. [2021-10-28 23:56:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:56:29,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 250 states and 344 transitions. [2021-10-28 23:56:29,592 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 176 [2021-10-28 23:56:29,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 250 states to 250 states and 344 transitions. [2021-10-28 23:56:29,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 250 [2021-10-28 23:56:29,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 250 [2021-10-28 23:56:29,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 250 states and 344 transitions. [2021-10-28 23:56:29,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:56:29,614 INFO L681 BuchiCegarLoop]: Abstraction has 250 states and 344 transitions. [2021-10-28 23:56:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states and 344 transitions. [2021-10-28 23:56:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-10-28 23:56:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 250 states have (on average 1.376) internal successors, (344), 249 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 344 transitions. [2021-10-28 23:56:29,644 INFO L704 BuchiCegarLoop]: Abstraction has 250 states and 344 transitions. [2021-10-28 23:56:29,645 INFO L587 BuchiCegarLoop]: Abstraction has 250 states and 344 transitions. [2021-10-28 23:56:29,645 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:56:29,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 250 states and 344 transitions. [2021-10-28 23:56:29,648 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 176 [2021-10-28 23:56:29,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:56:29,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:56:29,649 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:29,650 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] [2021-10-28 23:56:29,654 INFO L791 eck$LassoCheckResult]: Stem: 1326#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 1241#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 1242#L544 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1243#L552 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 1220#L508 assume 0 != main_~tmp~3; 1221#L479 ~switchedOnBeforeTS~0 := 0; 1278#L995 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1180#L1016-1 [2021-10-28 23:56:29,655 INFO L793 eck$LassoCheckResult]: Loop: 1180#L1016-1 assume !false; 1247#L578 assume test_~splverifierCounter~0 < 4; 1174#L579 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 1175#L587 assume !(0 != test_~tmp~4); 1216#L587-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 1237#L597 assume !(0 != test_~tmp___0~0); 1253#L597-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 1398#L607 assume 0 != test_~tmp___2~0; 1397#L613-1 havoc __utac_acc__Specification5_spec__2_#t~ret80;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 1396#L895 __utac_acc__Specification5_spec__2_#t~ret80 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret80;havoc __utac_acc__Specification5_spec__2_#t~ret80; 1255#L1005 assume !(0 != ~pumpRunning~0); 1256#L758 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1259#L842 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret59, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 1260#L816-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret58, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 1226#L790-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1191#L723-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1192#L728-3 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 1310#L944-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1233#L944-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1234#L950-3 processEnvironment__wrappee__highWaterSensor_#t~ret58 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret58;havoc processEnvironment__wrappee__highWaterSensor_#t~ret58; 1185#L794-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 1187#L765 havoc __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_#t~ret82, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1182#L715 __utac_acc__Specification5_spec__3_#t~ret81 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 1178#L1016 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 1180#L1016-1 [2021-10-28 23:56:29,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 23:56:29,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:29,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505189973] [2021-10-28 23:56:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:29,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:29,735 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:29,834 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1771616150, now seen corresponding path program 1 times [2021-10-28 23:56:29,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:29,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367918162] [2021-10-28 23:56:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:29,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:29,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:29,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367918162] [2021-10-28 23:56:29,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367918162] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:29,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:29,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:29,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439054998] [2021-10-28 23:56:29,893 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:56:29,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:56:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:29,895 INFO L87 Difference]: Start difference. First operand 250 states and 344 transitions. cyclomatic complexity: 97 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:30,296 INFO L93 Difference]: Finished difference Result 1069 states and 1483 transitions. [2021-10-28 23:56:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:56:30,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1069 states and 1483 transitions. [2021-10-28 23:56:30,313 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 743 [2021-10-28 23:56:30,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1069 states to 1069 states and 1483 transitions. [2021-10-28 23:56:30,329 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1069 [2021-10-28 23:56:30,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1069 [2021-10-28 23:56:30,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1069 states and 1483 transitions. [2021-10-28 23:56:30,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:56:30,334 INFO L681 BuchiCegarLoop]: Abstraction has 1069 states and 1483 transitions. [2021-10-28 23:56:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states and 1483 transitions. [2021-10-28 23:56:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 490. [2021-10-28 23:56:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 490 states have (on average 1.3591836734693878) internal successors, (666), 489 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 666 transitions. [2021-10-28 23:56:30,379 INFO L704 BuchiCegarLoop]: Abstraction has 490 states and 666 transitions. [2021-10-28 23:56:30,380 INFO L587 BuchiCegarLoop]: Abstraction has 490 states and 666 transitions. [2021-10-28 23:56:30,380 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:56:30,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 490 states and 666 transitions. [2021-10-28 23:56:30,385 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 350 [2021-10-28 23:56:30,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:56:30,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:56:30,389 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:30,390 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] [2021-10-28 23:56:30,390 INFO L791 eck$LassoCheckResult]: Stem: 2685#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 2587#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 2588#L544 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 2589#L552 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 2562#L508 assume 0 != main_~tmp~3; 2563#L479 ~switchedOnBeforeTS~0 := 0; 2624#L995 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2677#L1016-1 [2021-10-28 23:56:30,390 INFO L793 eck$LassoCheckResult]: Loop: 2677#L1016-1 assume !false; 2839#L578 assume test_~splverifierCounter~0 < 4; 2840#L579 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 2940#L587 assume !(0 != test_~tmp~4); 2937#L587-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 2936#L597 assume !(0 != test_~tmp___0~0); 2934#L597-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 2933#L607 assume 0 != test_~tmp___2~0; 2932#L613-1 havoc __utac_acc__Specification5_spec__2_#t~ret80;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 2942#L895 __utac_acc__Specification5_spec__2_#t~ret80 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret80;havoc __utac_acc__Specification5_spec__2_#t~ret80; 2908#L1005 assume !(0 != ~pumpRunning~0); 2672#L758 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 2602#L842 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret59, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 2603#L816-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret58, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 2570#L790-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 2530#L723-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 2531#L728-3 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 2659#L944-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 2578#L944-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 2579#L950-3 processEnvironment__wrappee__highWaterSensor_#t~ret58 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret58;havoc processEnvironment__wrappee__highWaterSensor_#t~ret58; 2522#L794-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 2524#L765 havoc __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_#t~ret82, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 2849#L715 __utac_acc__Specification5_spec__3_#t~ret81 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 2845#L1016 assume 2 != __utac_acc__Specification5_spec__3_~tmp~10;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 2846#L895-1 __utac_acc__Specification5_spec__3_#t~ret82 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret82;havoc __utac_acc__Specification5_spec__3_#t~ret82; 2841#L1020 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 2677#L1016-1 [2021-10-28 23:56:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 23:56:30,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:30,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33028516] [2021-10-28 23:56:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:30,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:30,468 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:30,517 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1716079387, now seen corresponding path program 1 times [2021-10-28 23:56:30,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:30,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832734883] [2021-10-28 23:56:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:30,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:30,527 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:30,538 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash 612676267, now seen corresponding path program 1 times [2021-10-28 23:56:30,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:30,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506742955] [2021-10-28 23:56:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:30,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:30,592 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:30,679 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:57:47,774 WARN L207 SmtUtils]: Spent 1.28 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 23:59:05,451 WARN L207 SmtUtils]: Spent 38.08 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 23:59:05,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:59:05 BoogieIcfgContainer [2021-10-28 23:59:05,601 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:59:05,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:59:05,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:59:05,602 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:59:05,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:56:26" (3/4) ... [2021-10-28 23:59:05,606 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:59:05,673 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:59:05,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:59:05,675 INFO L168 Benchmark]: Toolchain (without parser) took 161471.97 ms. Allocated memory was 123.7 MB in the beginning and 176.2 MB in the end (delta: 52.4 MB). Free memory was 88.0 MB in the beginning and 99.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:05,675 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 123.7 MB. Free memory is still 105.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:59:05,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.22 ms. Allocated memory is still 123.7 MB. Free memory was 87.7 MB in the beginning and 92.1 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:05,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 166.19 ms. Allocated memory is still 123.7 MB. Free memory was 92.1 MB in the beginning and 87.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:05,678 INFO L168 Benchmark]: Boogie Preprocessor took 94.31 ms. Allocated memory is still 123.7 MB. Free memory was 87.1 MB in the beginning and 83.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:05,678 INFO L168 Benchmark]: RCFGBuilder took 1600.66 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 80.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:05,679 INFO L168 Benchmark]: BuchiAutomizer took 158684.38 ms. Allocated memory was 123.7 MB in the beginning and 176.2 MB in the end (delta: 52.4 MB). Free memory was 80.5 MB in the beginning and 103.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 100.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:05,680 INFO L168 Benchmark]: Witness Printer took 71.72 ms. Allocated memory is still 176.2 MB. Free memory was 103.0 MB in the beginning and 99.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:05,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 123.7 MB. Free memory is still 105.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 847.22 ms. Allocated memory is still 123.7 MB. Free memory was 87.7 MB in the beginning and 92.1 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 166.19 ms. Allocated memory is still 123.7 MB. Free memory was 92.1 MB in the beginning and 87.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.31 ms. Allocated memory is still 123.7 MB. Free memory was 87.1 MB in the beginning and 83.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1600.66 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 80.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 158684.38 ms. Allocated memory was 123.7 MB in the beginning and 176.2 MB in the end (delta: 52.4 MB). Free memory was 80.5 MB in the beginning and 103.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 100.0 MB. Max. memory is 16.1 GB. * Witness Printer took 71.72 ms. Allocated memory is still 176.2 MB. Free memory was 103.0 MB in the beginning and 99.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 490 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 158.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 157.0s. Construction of modules took 0.5s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 764 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 490 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 926 SDtfs, 2611 SDslu, 2242 SDs, 0 SdLazy, 270 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 577]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=5432} State at position 1 is {NULL=0, NULL=5436, NULL=0, NULL=5432, NULL=5443, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@623d5d67=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ae73a7a=56, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@101d8575=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d6eed33=0, NULL=5454, methaneLevelCritical=0, tmp=0, NULL=0, tmp___1=0, NULL=5456, NULL=0, NULL=5457, NULL=5459, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@568a234b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@90e6e92=0, cleanupTimeShifts=4, retValue_acc=0, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=5442, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, tmp=1, NULL=0, retValue_acc=0, NULL=0, NULL=5444, NULL=0, tmp=1, retValue_acc=1, NULL=0, NULL=5460, NULL=5447, NULL=5452, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@538158b2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ddd719e=0, head=0, NULL=0, NULL=0, NULL=5450, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=5434, NULL=5438, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ccd62b5=0, NULL=5458, tmp___0=0, NULL=0, NULL=0, tmp=0, NULL=0, NULL=5451, NULL=5453, switchedOnBeforeTS=0, NULL=5448, tmp=0, \result=0, NULL=5437, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=5433, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16401382=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=5445, NULL=5435, \result=0, tmp___0=0, NULL=0, NULL=5439, retValue_acc=1, NULL=5455, NULL=5446, tmp___2=56, splverifierCounter=0, NULL=0, NULL=5449, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cb862ca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3378c173=0, NULL=5441, NULL=5440} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L640] int waterLevel = 1; [L641] int methaneLevelCritical = 0; [L746] int pumpRunning = 0; [L747] int systemActive = 1; [L989] int switchedOnBeforeTS ; [L499] int retValue_acc ; [L500] int tmp ; [L548] int retValue_acc ; [L551] retValue_acc = 1 [L552] return (retValue_acc); [L506] tmp = valid_product() [L508] COND TRUE \read(tmp) [L994] switchedOnBeforeTS = 0 [L568] int splverifierCounter ; [L569] int tmp ; [L570] int tmp___0 ; [L571] int tmp___1 ; [L572] int tmp___2 ; [L575] splverifierCounter = 0 Loop: [L577] COND TRUE 1 [L579] COND TRUE splverifierCounter < 4 [L585] tmp = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp)) [L595] tmp___0 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___0)) [L605] tmp___2 = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp___2) [L891] int retValue_acc ; [L894] retValue_acc = pumpRunning [L895] return (retValue_acc); [L1003] switchedOnBeforeTS = isPumpRunning() [L758] COND FALSE !(\read(pumpRunning)) [L765] COND TRUE \read(systemActive) [L839] int tmp ; [L842] COND FALSE !(\read(pumpRunning)) [L813] int tmp ; [L816] COND FALSE !(\read(pumpRunning)) [L787] int tmp ; [L790] COND TRUE ! pumpRunning [L936] int retValue_acc ; [L937] int tmp ; [L938] int tmp___0 ; [L720] int retValue_acc ; [L723] COND TRUE waterLevel < 2 [L724] retValue_acc = 1 [L725] return (retValue_acc); [L942] tmp = isHighWaterSensorDry() [L944] COND TRUE \read(tmp) [L945] tmp___0 = 0 [L949] retValue_acc = tmp___0 [L950] return (retValue_acc); [L792] tmp = isHighWaterLevel() [L794] COND FALSE !(\read(tmp)) [L1009] int tmp ; [L1010] int tmp___0 ; [L711] int retValue_acc ; [L714] retValue_acc = waterLevel [L715] return (retValue_acc); [L1014] tmp = getWaterLevel() [L1016] COND TRUE tmp != 2 [L891] int retValue_acc ; [L894] retValue_acc = pumpRunning [L895] return (retValue_acc); [L1018] tmp___0 = isPumpRunning() [L1020] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:59:05,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85493695-7341-4630-9f09-d90f89554ec7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...