./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product49.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_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/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_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/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_2cbf8532-e67d-4320-b325-a8a9f9d1305c/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 278b945680d29bf571e1aaa42d90b0a6b141ce129976e6e0985d57b09f7f9d7c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:34:42,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:34:42,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:34:42,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:34:42,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:34:42,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:34:42,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:34:42,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:34:42,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:34:42,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:34:42,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:34:42,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:34:42,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:34:42,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:34:42,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:34:42,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:34:42,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:34:42,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:34:42,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:34:42,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:34:42,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:34:42,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:34:42,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:34:42,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:34:42,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:34:42,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:34:42,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:34:42,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:34:42,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:34:42,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:34:42,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:34:42,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:34:42,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:34:42,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:34:42,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:34:42,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:34:42,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:34:42,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:34:42,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:34:42,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:34:42,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:34:42,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:34:42,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:34:42,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:34:42,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:34:42,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:34:42,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:34:42,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:34:42,580 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:34:42,581 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:34:42,581 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:34:42,581 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:34:42,582 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:34:42,582 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:34:42,583 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:34:42,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:34:42,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:34:42,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:34:42,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:34:42,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:34:42,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:34:42,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:34:42,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:34:42,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:34:42,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:34:42,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:34:42,594 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:34:42,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:34:42,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:34:42,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:34:42,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:34:42,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:34:42,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:34:42,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:34:42,599 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:34:42,599 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_2cbf8532-e67d-4320-b325-a8a9f9d1305c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278b945680d29bf571e1aaa42d90b0a6b141ce129976e6e0985d57b09f7f9d7c [2021-10-28 23:34:42,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:34:42,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:34:42,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:34:42,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:34:42,892 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:34:42,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c [2021-10-28 23:34:42,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/data/6e726b3b2/d08951f870584bcfb29a09e8cf1e1991/FLAG3b7b72849 [2021-10-28 23:34:43,489 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:34:43,490 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c [2021-10-28 23:34:43,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/data/6e726b3b2/d08951f870584bcfb29a09e8cf1e1991/FLAG3b7b72849 [2021-10-28 23:34:43,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/data/6e726b3b2/d08951f870584bcfb29a09e8cf1e1991 [2021-10-28 23:34:43,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:34:43,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:34:43,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:34:43,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:34:43,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:34:43,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:34:43" (1/1) ... [2021-10-28 23:34:43,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490851d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:43, skipping insertion in model container [2021-10-28 23:34:43,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:34:43" (1/1) ... [2021-10-28 23:34:43,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:34:43,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:34:44,159 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_2cbf8532-e67d-4320-b325-a8a9f9d1305c/sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c[6886,6899] [2021-10-28 23:34:44,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:34:44,232 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:34:44,266 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_2cbf8532-e67d-4320-b325-a8a9f9d1305c/sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c[6886,6899] [2021-10-28 23:34:44,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:34:44,330 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:34:44,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44 WrapperNode [2021-10-28 23:34:44,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:34:44,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:34:44,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:34:44,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:34:44,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:34:44,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:34:44,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:34:44,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:34:44,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:34:44,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:34:44,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:34:44,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:34:44,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (1/1) ... [2021-10-28 23:34:44,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:34:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:34:44,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:34:44,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:34:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:34:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:34:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:34:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:34:45,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:34:45,706 INFO L299 CfgBuilder]: Removed 170 assume(true) statements. [2021-10-28 23:34:45,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:34:45 BoogieIcfgContainer [2021-10-28 23:34:45,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:34:45,712 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:34:45,712 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:34:45,722 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:34:45,722 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:34:45,723 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:34:43" (1/3) ... [2021-10-28 23:34:45,725 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10ce0f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:34:45, skipping insertion in model container [2021-10-28 23:34:45,725 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:34:45,725 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:34:44" (2/3) ... [2021-10-28 23:34:45,726 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10ce0f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:34:45, skipping insertion in model container [2021-10-28 23:34:45,726 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:34:45,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:34:45" (3/3) ... [2021-10-28 23:34:45,728 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2021-10-28 23:34:45,785 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:34:45,785 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:34:45,785 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:34:45,785 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:34:45,785 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:34:45,785 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:34:45,785 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:34:45,785 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:34:45,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 123 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:34:45,840 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-28 23:34:45,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:34:45,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:34:45,849 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:45,849 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:45,849 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:34:45,850 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 123 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:34:45,859 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-28 23:34:45,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:34:45,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:34:45,861 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:45,861 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:45,866 INFO L791 eck$LassoCheckResult]: Stem: 106#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 33#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 100#L566true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 42#L574true main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 37#L530true assume 0 != main_~tmp~5; 34#L502true ~switchedOnBeforeTS~0 := 0; 28#L951true havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 102#L972-1true [2021-10-28 23:34:45,867 INFO L793 eck$LassoCheckResult]: Loop: 102#L972-1true assume !false; 4#L276true assume test_~splverifierCounter~0 < 4; 120#L277true test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 103#L285true assume !(0 != test_~tmp~4); 52#L285-1true test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 8#L295true assume !(0 != test_~tmp___0~2); 95#L295-1true test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 60#L305true assume 0 != test_~tmp___2~0; 93#L311-2true havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 23#L183true __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 26#L961true assume !(0 != ~pumpRunning~0); 64#L72true assume !(0 != ~systemActive~0); 49#L79true havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 32#L406true __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 14#L972true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 102#L972-1true [2021-10-28 23:34:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 23:34:45,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:45,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255125900] [2021-10-28 23:34:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:45,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:46,111 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:46,283 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:34:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash 96105516, now seen corresponding path program 1 times [2021-10-28 23:34:46,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:46,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286769188] [2021-10-28 23:34:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:46,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:46,295 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:46,306 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:34:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2030130726, now seen corresponding path program 1 times [2021-10-28 23:34:46,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:46,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634489287] [2021-10-28 23:34:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:46,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:46,459 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 23:34:46,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:34:46,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634489287] [2021-10-28 23:34:46,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634489287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:46,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:46,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:34:46,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200967885] [2021-10-28 23:34:46,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:34:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:34:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:34:46,734 INFO L87 Difference]: Start difference. First operand has 123 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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 23:34:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:47,039 INFO L93 Difference]: Finished difference Result 123 states and 175 transitions. [2021-10-28 23:34:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:34:47,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 175 transitions. [2021-10-28 23:34:47,048 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-28 23:34:47,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 116 states and 168 transitions. [2021-10-28 23:34:47,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 116 [2021-10-28 23:34:47,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2021-10-28 23:34:47,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 168 transitions. [2021-10-28 23:34:47,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:34:47,059 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 168 transitions. [2021-10-28 23:34:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 168 transitions. [2021-10-28 23:34:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-28 23:34:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.4482758620689655) internal successors, (168), 115 states have internal predecessors, (168), 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 23:34:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2021-10-28 23:34:47,097 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 168 transitions. [2021-10-28 23:34:47,098 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 168 transitions. [2021-10-28 23:34:47,098 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:34:47,098 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 168 transitions. [2021-10-28 23:34:47,101 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-28 23:34:47,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:34:47,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:34:47,102 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:47,102 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:47,103 INFO L791 eck$LassoCheckResult]: Stem: 377#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 318#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 319#L566 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 327#L574 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 322#L530 assume 0 != main_~tmp~5; 320#L502 ~switchedOnBeforeTS~0 := 0; 311#L951 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 288#L972-1 [2021-10-28 23:34:47,103 INFO L793 eck$LassoCheckResult]: Loop: 288#L972-1 assume !false; 264#L276 assume test_~splverifierCounter~0 < 4; 265#L277 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 374#L285 assume !(0 != test_~tmp~4); 339#L285-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 273#L295 assume !(0 != test_~tmp___0~2); 275#L295-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 352#L305 assume 0 != test_~tmp___2~0; 329#L311-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 301#L183 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 302#L961 assume !(0 != ~pumpRunning~0); 307#L72 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 344#L130 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 345#L104-1 assume !(0 == ~pumpRunning~0); 294#L79 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 317#L406 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 286#L972 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 288#L972-1 [2021-10-28 23:34:47,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 23:34:47,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:47,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033010501] [2021-10-28 23:34:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:47,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:47,166 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:47,300 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:34:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -477603702, now seen corresponding path program 1 times [2021-10-28 23:34:47,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:47,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292943715] [2021-10-28 23:34:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:47,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:47,322 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 23:34:47,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:34:47,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292943715] [2021-10-28 23:34:47,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292943715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:47,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:47,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:34:47,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099571665] [2021-10-28 23:34:47,326 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:34:47,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:34:47,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:34:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:34:47,330 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 23:34:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:47,427 INFO L93 Difference]: Finished difference Result 165 states and 227 transitions. [2021-10-28 23:34:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:34:47,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 165 states and 227 transitions. [2021-10-28 23:34:47,432 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-10-28 23:34:47,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 165 states to 165 states and 227 transitions. [2021-10-28 23:34:47,456 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 165 [2021-10-28 23:34:47,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 165 [2021-10-28 23:34:47,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 165 states and 227 transitions. [2021-10-28 23:34:47,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:34:47,458 INFO L681 BuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2021-10-28 23:34:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states and 227 transitions. [2021-10-28 23:34:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-10-28 23:34:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 165 states have (on average 1.3757575757575757) internal successors, (227), 164 states have internal predecessors, (227), 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 23:34:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2021-10-28 23:34:47,470 INFO L704 BuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2021-10-28 23:34:47,470 INFO L587 BuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2021-10-28 23:34:47,470 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:34:47,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 227 transitions. [2021-10-28 23:34:47,473 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-10-28 23:34:47,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:34:47,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:34:47,474 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:47,474 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:47,474 INFO L791 eck$LassoCheckResult]: Stem: 671#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 607#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 608#L566 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 616#L574 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 611#L530 assume 0 != main_~tmp~5; 609#L502 ~switchedOnBeforeTS~0 := 0; 600#L951 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 576#L972-1 [2021-10-28 23:34:47,475 INFO L793 eck$LassoCheckResult]: Loop: 576#L972-1 assume !false; 551#L276 assume test_~splverifierCounter~0 < 4; 552#L277 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 668#L285 assume !(0 != test_~tmp~4); 628#L285-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 561#L295 assume !(0 != test_~tmp___0~2); 563#L295-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 640#L305 assume 0 != test_~tmp___2~0; 620#L311-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 591#L183 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 592#L961 assume !(0 != ~pumpRunning~0); 597#L72 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 633#L130 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 634#L104-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 630#L414-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 631#L419-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 649#L232-3 assume !(0 != isHighWaterLevel_~tmp~2);isHighWaterLevel_~tmp___0~0 := 1; 583#L232-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 568#L238-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 569#L108-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 585#L79 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 606#L406 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 574#L972 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 576#L972-1 [2021-10-28 23:34:47,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 23:34:47,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:47,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079298064] [2021-10-28 23:34:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:47,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:47,519 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:47,570 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:34:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1457587912, now seen corresponding path program 1 times [2021-10-28 23:34:47,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:47,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284172005] [2021-10-28 23:34:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:47,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:47,618 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 23:34:47,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:34:47,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284172005] [2021-10-28 23:34:47,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284172005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:47,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:47,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:34:47,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884949798] [2021-10-28 23:34:47,620 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:34:47,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:34:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:34:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:34:47,621 INFO L87 Difference]: Start difference. First operand 165 states and 227 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:34:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:47,902 INFO L93 Difference]: Finished difference Result 700 states and 975 transitions. [2021-10-28 23:34:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:34:47,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 700 states and 975 transitions. [2021-10-28 23:34:47,912 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 481 [2021-10-28 23:34:47,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 700 states to 700 states and 975 transitions. [2021-10-28 23:34:47,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 700 [2021-10-28 23:34:47,928 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 700 [2021-10-28 23:34:47,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 700 states and 975 transitions. [2021-10-28 23:34:47,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:34:47,936 INFO L681 BuchiCegarLoop]: Abstraction has 700 states and 975 transitions. [2021-10-28 23:34:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states and 975 transitions. [2021-10-28 23:34:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 320. [2021-10-28 23:34:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 320 states have (on average 1.359375) internal successors, (435), 319 states have internal predecessors, (435), 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 23:34:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 435 transitions. [2021-10-28 23:34:47,980 INFO L704 BuchiCegarLoop]: Abstraction has 320 states and 435 transitions. [2021-10-28 23:34:47,980 INFO L587 BuchiCegarLoop]: Abstraction has 320 states and 435 transitions. [2021-10-28 23:34:47,980 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:34:47,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 320 states and 435 transitions. [2021-10-28 23:34:47,985 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 226 [2021-10-28 23:34:47,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:34:47,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:34:47,988 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:47,988 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] [2021-10-28 23:34:47,989 INFO L791 eck$LassoCheckResult]: Stem: 1570#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 1494#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 1495#L566 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1503#L574 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 1498#L530 assume 0 != main_~tmp~5; 1496#L502 ~switchedOnBeforeTS~0 := 0; 1486#L951 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1479#L972-1 [2021-10-28 23:34:47,995 INFO L793 eck$LassoCheckResult]: Loop: 1479#L972-1 assume !false; 1435#L276 assume test_~splverifierCounter~0 < 4; 1436#L277 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 1717#L285 assume !(0 != test_~tmp~4); 1714#L285-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 1693#L295 assume !(0 != test_~tmp___0~2); 1691#L295-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 1690#L305 assume 0 != test_~tmp___2~0; 1688#L311-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1687#L183 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 1482#L961 assume !(0 != ~pumpRunning~0); 1483#L72 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1522#L130 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1523#L104-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1519#L414-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1520#L419-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 1544#L232-3 assume !(0 != isHighWaterLevel_~tmp~2);isHighWaterLevel_~tmp___0~0 := 1; 1467#L232-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1452#L238-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1453#L108-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1469#L79 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1516#L406 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1458#L972 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1459#L183-1 __utac_acc__Specification5_spec__3_#t~ret81 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 1477#L976 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1479#L972-1 [2021-10-28 23:34:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 23:34:47,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:47,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545657481] [2021-10-28 23:34:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:47,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,028 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,101 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:34:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash -582657101, now seen corresponding path program 1 times [2021-10-28 23:34:48,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:48,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213225760] [2021-10-28 23:34:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:48,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:34:48,138 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 23:34:48,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:34:48,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213225760] [2021-10-28 23:34:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213225760] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:34:48,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:34:48,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:34:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20708435] [2021-10-28 23:34:48,140 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:34:48,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:34:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:34:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:34:48,141 INFO L87 Difference]: Start difference. First operand 320 states and 435 transitions. cyclomatic complexity: 117 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 23:34:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:34:48,248 INFO L93 Difference]: Finished difference Result 591 states and 791 transitions. [2021-10-28 23:34:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:34:48,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 591 states and 791 transitions. [2021-10-28 23:34:48,256 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 424 [2021-10-28 23:34:48,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 591 states to 591 states and 791 transitions. [2021-10-28 23:34:48,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 591 [2021-10-28 23:34:48,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 591 [2021-10-28 23:34:48,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 591 states and 791 transitions. [2021-10-28 23:34:48,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:34:48,273 INFO L681 BuchiCegarLoop]: Abstraction has 591 states and 791 transitions. [2021-10-28 23:34:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states and 791 transitions. [2021-10-28 23:34:48,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 332. [2021-10-28 23:34:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 332 states have (on average 1.3463855421686748) internal successors, (447), 331 states have internal predecessors, (447), 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 23:34:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 447 transitions. [2021-10-28 23:34:48,298 INFO L704 BuchiCegarLoop]: Abstraction has 332 states and 447 transitions. [2021-10-28 23:34:48,298 INFO L587 BuchiCegarLoop]: Abstraction has 332 states and 447 transitions. [2021-10-28 23:34:48,298 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:34:48,298 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 332 states and 447 transitions. [2021-10-28 23:34:48,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 234 [2021-10-28 23:34:48,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:34:48,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:34:48,304 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:34:48,304 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] [2021-10-28 23:34:48,304 INFO L791 eck$LassoCheckResult]: Stem: 2504#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 2414#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 2415#L566 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 2423#L574 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 2418#L530 assume 0 != main_~tmp~5; 2416#L502 ~switchedOnBeforeTS~0 := 0; 2406#L951 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2407#L972-1 [2021-10-28 23:34:48,305 INFO L793 eck$LassoCheckResult]: Loop: 2407#L972-1 assume !false; 2498#L276 assume test_~splverifierCounter~0 < 4; 2597#L277 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 2595#L285 assume !(0 != test_~tmp~4); 2593#L285-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 2592#L295 assume !(0 != test_~tmp___0~2); 2590#L295-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 2589#L305 assume 0 != test_~tmp___2~0; 2586#L311-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2397#L183 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 2398#L961 assume !(0 != ~pumpRunning~0); 2403#L72 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2456#L130 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2581#L104-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2441#L414-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2442#L419-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 2467#L232-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 2388#L232-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2373#L238-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2374#L108-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2390#L79 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 2611#L406 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 2610#L972 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2484#L183-1 __utac_acc__Specification5_spec__3_#t~ret81 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 2485#L976 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 2407#L972-1 [2021-10-28 23:34:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-10-28 23:34:48,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:48,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924381306] [2021-10-28 23:34:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:48,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,360 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,415 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:34:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:48,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1262715471, now seen corresponding path program 1 times [2021-10-28 23:34:48,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:48,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032168229] [2021-10-28 23:34:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:48,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,422 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:34:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:34:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1326141653, now seen corresponding path program 1 times [2021-10-28 23:34:48,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:34:48,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022487584] [2021-10-28 23:34:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:34:48,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:34:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,465 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:34:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:34:48,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:35:49,155 WARN L207 SmtUtils]: Spent 1.00 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 23:36:54,213 WARN L207 SmtUtils]: Spent 32.79 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 23:36:54,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:36:54 BoogieIcfgContainer [2021-10-28 23:36:54,431 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:36:54,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:36:54,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:36:54,432 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:36:54,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:34:45" (3/4) ... [2021-10-28 23:36:54,436 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:36:54,496 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:36:54,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:36:54,497 INFO L168 Benchmark]: Toolchain (without parser) took 130677.98 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 51.8 MB in the beginning and 79.8 MB in the end (delta: -27.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:54,498 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:54,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.22 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 62.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:54,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.08 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 58.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:54,500 INFO L168 Benchmark]: Boogie Preprocessor took 79.06 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 55.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:54,500 INFO L168 Benchmark]: RCFGBuilder took 1174.79 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.9 MB in the beginning and 69.2 MB in the end (delta: -13.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:54,501 INFO L168 Benchmark]: BuchiAutomizer took 128719.33 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 68.5 MB in the beginning and 81.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:54,502 INFO L168 Benchmark]: Witness Printer took 64.80 ms. Allocated memory is still 138.4 MB. Free memory was 81.9 MB in the beginning and 79.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:54,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 507.22 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 62.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.08 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 58.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.06 ms. Allocated memory is still 94.4 MB. Free memory was 58.4 MB in the beginning and 55.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1174.79 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.9 MB in the beginning and 69.2 MB in the end (delta: -13.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 128719.33 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 68.5 MB in the beginning and 81.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.1 GB. * Witness Printer took 64.80 ms. Allocated memory is still 138.4 MB. Free memory was 81.9 MB in the beginning and 79.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 332 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 128.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 127.4s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 639 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 332 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 813 SDtfs, 1846 SDslu, 1091 SDs, 0 SdLazy, 253 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 275]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=1, NULL=3998, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ce5754=0, NULL=3996, NULL=3987, methaneLevelCritical=0, retValue_acc=1, tmp=0, NULL=4001, retValue_acc=0, NULL=0, tmp___1=0, NULL=3999, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39e89611=0, NULL=4003, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a827313=0, cleanupTimeShifts=4, NULL=4012, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29665ba=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a49eef2=0, NULL=4005, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51ad12fa=0, NULL=0, NULL=0, tmp=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@612c1cd0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@610f55cd=56, NULL=0, NULL=0, NULL=4010, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d965974=0, NULL=0, NULL=0, tmp___0=0, retValue_acc=1, NULL=3994, NULL=4006, tmp=0, head=0, NULL=0, NULL=0, NULL=3985, NULL=4008, NULL=3990, NULL=0, NULL=3988, retValue_acc=0, NULL=3995, NULL=3993, tmp=1, tmp___0=0, NULL=0, NULL=3986, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1249a5ca=0, switchedOnBeforeTS=0, NULL=4000, \result=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3cb63878=0, \result=0, NULL=3991, \result=0, tmp___0=0, NULL=4002, NULL=0, NULL=3989, NULL=0, NULL=4007, NULL=0, NULL=4004, NULL=4011, tmp___2=56, splverifierCounter=0, NULL=0, NULL=4009, retValue_acc=0, NULL=3992, NULL=0, NULL=0, NULL=3997} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L331] int waterLevel = 1; [L332] int methaneLevelCritical = 0; [L443] int cleanupTimeShifts = 4; [L748] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L945] int switchedOnBeforeTS ; [L521] int retValue_acc ; [L522] int tmp ; [L570] int retValue_acc ; [L573] retValue_acc = 1 [L574] return (retValue_acc); [L528] tmp = valid_product() [L530] COND TRUE \read(tmp) [L950] switchedOnBeforeTS = 0 [L266] int splverifierCounter ; [L267] int tmp ; [L268] int tmp___0 ; [L269] int tmp___1 ; [L270] int tmp___2 ; [L273] splverifierCounter = 0 Loop: [L275] COND TRUE 1 [L277] COND TRUE splverifierCounter < 4 [L283] tmp = __VERIFIER_nondet_int() [L285] COND FALSE !(\read(tmp)) [L293] tmp___0 = __VERIFIER_nondet_int() [L295] COND FALSE !(\read(tmp___0)) [L303] tmp___2 = __VERIFIER_nondet_int() [L305] COND TRUE \read(tmp___2) [L179] int retValue_acc ; [L182] retValue_acc = pumpRunning [L183] return (retValue_acc); [L959] switchedOnBeforeTS = isPumpRunning() [L72] COND FALSE !(\read(pumpRunning)) [L79] COND TRUE \read(systemActive) [L127] int tmp ; [L130] COND FALSE !(\read(pumpRunning)) [L101] int tmp ; [L104] COND TRUE ! pumpRunning [L224] int retValue_acc ; [L225] int tmp ; [L226] int tmp___0 ; [L411] int retValue_acc ; [L414] COND TRUE waterLevel < 2 [L415] retValue_acc = 1 [L416] return (retValue_acc); [L230] tmp = isHighWaterSensorDry() [L232] COND TRUE \read(tmp) [L233] tmp___0 = 0 [L237] retValue_acc = tmp___0 [L238] return (retValue_acc); [L106] tmp = isHighWaterLevel() [L108] COND FALSE !(\read(tmp)) [L965] int tmp ; [L966] int tmp___0 ; [L402] int retValue_acc ; [L405] retValue_acc = waterLevel [L406] return (retValue_acc); [L970] tmp = getWaterLevel() [L972] COND TRUE tmp != 2 [L179] int retValue_acc ; [L182] retValue_acc = pumpRunning [L183] return (retValue_acc); [L974] tmp___0 = isPumpRunning() [L976] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:36:54,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbf8532-e67d-4320-b325-a8a9f9d1305c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...