./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product34.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_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/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_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/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_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/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 750fa47004e8b71818a419cd0705c167dc764081be79a2bed3ff642b9979f0ab .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:11:40,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:11:40,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:11:40,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:11:40,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:11:40,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:11:40,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:11:40,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:11:40,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:11:40,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:11:40,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:11:40,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:11:40,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:11:40,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:11:40,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:11:40,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:11:40,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:11:40,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:11:40,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:11:40,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:11:40,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:11:40,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:11:40,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:11:40,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:11:40,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:11:40,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:11:40,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:11:40,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:11:40,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:11:40,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:11:40,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:11:40,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:11:40,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:11:40,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:11:40,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:11:40,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:11:40,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:11:40,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:11:40,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:11:40,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:11:40,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:11:40,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:11:40,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:11:40,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:11:40,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:11:40,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:11:40,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:11:40,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:11:40,705 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:11:40,705 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:11:40,705 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:11:40,705 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:11:40,705 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:11:40,706 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:11:40,706 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:11:40,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:11:40,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:11:40,706 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:11:40,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:11:40,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:11:40,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:11:40,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:11:40,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:11:40,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:11:40,708 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:11:40,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:11:40,708 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:11:40,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:11:40,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:11:40,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:11:40,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:11:40,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:11:40,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:11:40,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:11:40,710 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:11:40,716 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_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 750fa47004e8b71818a419cd0705c167dc764081be79a2bed3ff642b9979f0ab [2021-10-28 23:11:41,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:11:41,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:11:41,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:11:41,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:11:41,048 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:11:41,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c [2021-10-28 23:11:41,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/data/b089fb8ce/f950002e29ef47538bb34517ae2af8cd/FLAG7b90c0056 [2021-10-28 23:11:41,579 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:11:41,580 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c [2021-10-28 23:11:41,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/data/b089fb8ce/f950002e29ef47538bb34517ae2af8cd/FLAG7b90c0056 [2021-10-28 23:11:41,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/data/b089fb8ce/f950002e29ef47538bb34517ae2af8cd [2021-10-28 23:11:41,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:11:41,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:11:41,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:11:41,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:11:41,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:11:41,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:11:41" (1/1) ... [2021-10-28 23:11:41,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c21d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:41, skipping insertion in model container [2021-10-28 23:11:41,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:11:41" (1/1) ... [2021-10-28 23:11:41,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:11:41,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:11:42,332 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_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c[16171,16184] [2021-10-28 23:11:42,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:11:42,354 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:11:42,448 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_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c[16171,16184] [2021-10-28 23:11:42,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:11:42,473 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:11:42,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42 WrapperNode [2021-10-28 23:11:42,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:11:42,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:11:42,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:11:42,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:11:42,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:11:42,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:11:42,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:11:42,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:11:42,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:11:42,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:11:42,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:11:42,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:11:42,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (1/1) ... [2021-10-28 23:11:42,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:11:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:42,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:11:42,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:11:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:11:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:11:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:11:42,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:11:43,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:11:43,494 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-10-28 23:11:43,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:11:43 BoogieIcfgContainer [2021-10-28 23:11:43,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:11:43,497 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:11:43,497 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:11:43,500 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:11:43,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:11:43,501 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:11:41" (1/3) ... [2021-10-28 23:11:43,502 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37e85e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:11:43, skipping insertion in model container [2021-10-28 23:11:43,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:11:43,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:11:42" (2/3) ... [2021-10-28 23:11:43,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37e85e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:11:43, skipping insertion in model container [2021-10-28 23:11:43,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:11:43,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:11:43" (3/3) ... [2021-10-28 23:11:43,504 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product34.cil.c [2021-10-28 23:11:43,546 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:11:43,546 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:11:43,546 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:11:43,546 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:11:43,547 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:11:43,547 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:11:43,547 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:11:43,547 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:11:43,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 81 states, 80 states have (on average 1.5375) internal successors, (123), 80 states have internal predecessors, (123), 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 23:11:43,585 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-28 23:11:43,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:11:43,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:11:43,593 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:11:43,593 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:43,593 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:11:43,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 81 states, 80 states have (on average 1.5375) internal successors, (123), 80 states have internal predecessors, (123), 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 23:11:43,600 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-28 23:11:43,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:11:43,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:11:43,601 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:11:43,601 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:43,606 INFO L791 eck$LassoCheckResult]: Stem: 66#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 51#L-1true havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 56#L917true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 18#L925true main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 50#L208true assume 0 != main_~tmp~1; 44#L182true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 75#L773-1true [2021-10-28 23:11:43,606 INFO L793 eck$LassoCheckResult]: Loop: 75#L773-1true assume !false; 48#L66true assume test_~splverifierCounter~0 < 4; 65#L67true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 73#L75true assume !(0 != test_~tmp~0); 40#L75-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 49#L85true assume !(0 != test_~tmp___0~0); 67#L85-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 24#L95true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 39#L103-2true assume !(0 != ~pumpRunning~0); 47#L237true assume !(0 != ~systemActive~0); 14#L244true havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 13#L844true __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 52#L767true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 75#L773-1true [2021-10-28 23:11:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 23:11:43,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:43,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397512865] [2021-10-28 23:11:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:43,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:43,900 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:44,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:11:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1680575562, now seen corresponding path program 1 times [2021-10-28 23:11:44,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:44,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958621832] [2021-10-28 23:11:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:44,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:44,136 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 23:11:44,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:44,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958621832] [2021-10-28 23:11:44,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958621832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:11:44,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:11:44,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:11:44,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404433303] [2021-10-28 23:11:44,147 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:11:44,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:11:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:11:44,167 INFO L87 Difference]: Start difference. First operand has 81 states, 80 states have (on average 1.5375) internal successors, (123), 80 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:44,223 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2021-10-28 23:11:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:11:44,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 113 transitions. [2021-10-28 23:11:44,238 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-10-28 23:11:44,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 74 states and 105 transitions. [2021-10-28 23:11:44,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-10-28 23:11:44,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-28 23:11:44,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 105 transitions. [2021-10-28 23:11:44,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:11:44,248 INFO L681 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-28 23:11:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 105 transitions. [2021-10-28 23:11:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 23:11:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 73 states have internal predecessors, (105), 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 23:11:44,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-10-28 23:11:44,278 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-28 23:11:44,278 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-28 23:11:44,278 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:11:44,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 105 transitions. [2021-10-28 23:11:44,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-10-28 23:11:44,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:11:44,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:11:44,281 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:11:44,281 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:44,281 INFO L791 eck$LassoCheckResult]: Stem: 242#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 235#L-1 havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 236#L917 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 195#L925 main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 196#L208 assume 0 != main_~tmp~1; 230#L182 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 215#L773-1 [2021-10-28 23:11:44,281 INFO L793 eck$LassoCheckResult]: Loop: 215#L773-1 assume !false; 232#L66 assume test_~splverifierCounter~0 < 4; 233#L67 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 241#L75 assume !(0 != test_~tmp~0); 226#L75-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 227#L85 assume !(0 != test_~tmp___0~0); 211#L85-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 204#L95 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 205#L103-2 assume !(0 != ~pumpRunning~0); 185#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 231#L269 assume !(0 == ~pumpRunning~0); 188#L244 havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 186#L844 __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 187#L767 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 215#L773-1 [2021-10-28 23:11:44,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:44,282 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 23:11:44,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:44,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564906546] [2021-10-28 23:11:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:44,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:44,368 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:44,495 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:11:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:44,496 INFO L85 PathProgramCache]: Analyzing trace with hash -589845010, now seen corresponding path program 1 times [2021-10-28 23:11:44,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:44,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418540979] [2021-10-28 23:11:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:44,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:44,514 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 23:11:44,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:44,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418540979] [2021-10-28 23:11:44,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418540979] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:11:44,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:11:44,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:11:44,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296990207] [2021-10-28 23:11:44,516 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:11:44,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:11:44,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:11:44,517 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 23:11:44,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:44,575 INFO L93 Difference]: Finished difference Result 121 states and 165 transitions. [2021-10-28 23:11:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:11:44,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 165 transitions. [2021-10-28 23:11:44,578 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 23:11:44,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 121 states and 165 transitions. [2021-10-28 23:11:44,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 121 [2021-10-28 23:11:44,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 121 [2021-10-28 23:11:44,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 165 transitions. [2021-10-28 23:11:44,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:11:44,582 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-10-28 23:11:44,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 165 transitions. [2021-10-28 23:11:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-10-28 23:11:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 121 states have (on average 1.3636363636363635) internal successors, (165), 120 states have internal predecessors, (165), 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 23:11:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2021-10-28 23:11:44,591 INFO L704 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-10-28 23:11:44,591 INFO L587 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-10-28 23:11:44,591 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:11:44,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 121 states and 165 transitions. [2021-10-28 23:11:44,593 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 23:11:44,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:11:44,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:11:44,594 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:11:44,594 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] [2021-10-28 23:11:44,594 INFO L791 eck$LassoCheckResult]: Stem: 449#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 439#L-1 havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 440#L917 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 394#L925 main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 395#L208 assume 0 != main_~tmp~1; 433#L182 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 414#L773-1 [2021-10-28 23:11:44,595 INFO L793 eck$LassoCheckResult]: Loop: 414#L773-1 assume !false; 436#L66 assume test_~splverifierCounter~0 < 4; 437#L67 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 448#L75 assume !(0 != test_~tmp~0); 426#L75-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 427#L85 assume !(0 != test_~tmp___0~0); 408#L85-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 403#L95 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 404#L103-2 assume !(0 != ~pumpRunning~0); 423#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 435#L269 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 415#L884 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 389#L889 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 390#L371 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 443#L371-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 444#L377 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 452#L273 assume !(0 != processEnvironment_~tmp~2); 388#L244 havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 386#L844 __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 387#L767 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 414#L773-1 [2021-10-28 23:11:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 23:11:44,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:44,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290825611] [2021-10-28 23:11:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:44,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:44,645 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:44,712 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:11:44,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1033973030, now seen corresponding path program 1 times [2021-10-28 23:11:44,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:44,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898316668] [2021-10-28 23:11:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:44,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:44,728 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:44,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:11:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1019261056, now seen corresponding path program 1 times [2021-10-28 23:11:44,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:44,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498372300] [2021-10-28 23:11:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:44,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:44,858 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 23:11:44,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:44,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498372300] [2021-10-28 23:11:44,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498372300] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:11:44,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:11:44,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:11:44,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771256005] [2021-10-28 23:11:45,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:11:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:11:45,194 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. cyclomatic complexity: 46 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 23:11:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:45,303 INFO L93 Difference]: Finished difference Result 398 states and 547 transitions. [2021-10-28 23:11:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:11:45,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 547 transitions. [2021-10-28 23:11:45,308 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2021-10-28 23:11:45,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 547 transitions. [2021-10-28 23:11:45,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2021-10-28 23:11:45,314 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2021-10-28 23:11:45,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 547 transitions. [2021-10-28 23:11:45,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:11:45,317 INFO L681 BuchiCegarLoop]: Abstraction has 398 states and 547 transitions. [2021-10-28 23:11:45,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 547 transitions. [2021-10-28 23:11:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 236. [2021-10-28 23:11:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 236 states have (on average 1.3389830508474576) internal successors, (316), 235 states have internal predecessors, (316), 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 23:11:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2021-10-28 23:11:45,336 INFO L704 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2021-10-28 23:11:45,336 INFO L587 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2021-10-28 23:11:45,336 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:11:45,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states and 316 transitions. [2021-10-28 23:11:45,338 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-10-28 23:11:45,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:11:45,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:11:45,339 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:11:45,339 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:45,339 INFO L791 eck$LassoCheckResult]: Stem: 991#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 980#L-1 havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 981#L917 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 931#L925 main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 932#L208 assume 0 != main_~tmp~1; 972#L182 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 973#L773-1 [2021-10-28 23:11:45,339 INFO L793 eck$LassoCheckResult]: Loop: 973#L773-1 assume !false; 1099#L66 assume test_~splverifierCounter~0 < 4; 1100#L67 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1144#L75 assume !(0 != test_~tmp~0); 1142#L75-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1141#L85 assume !(0 != test_~tmp___0~0); 1140#L85-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1139#L95 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1137#L103-2 assume !(0 != ~pumpRunning~0); 1120#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1136#L269 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1118#L884 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1135#L889 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 1002#L371 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 986#L371-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 987#L377 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 1109#L273 assume !(0 != processEnvironment_~tmp~2); 1108#L244 havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 1107#L844 __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 1106#L767 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1105#L876 __utac_acc__Specification3_spec__1_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret67;havoc __utac_acc__Specification3_spec__1_#t~ret67; 1102#L773 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 973#L773-1 [2021-10-28 23:11:45,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 23:11:45,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:45,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578375293] [2021-10-28 23:11:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:45,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:45,391 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:45,450 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:11:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1510630356, now seen corresponding path program 1 times [2021-10-28 23:11:45,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:45,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999895837] [2021-10-28 23:11:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:45,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:45,459 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:45,469 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:11:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash -257325230, now seen corresponding path program 1 times [2021-10-28 23:11:45,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:45,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203416022] [2021-10-28 23:11:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:45,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:45,509 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:45,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:44,890 WARN L207 SmtUtils]: Spent 58.98 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 23:13:46,022 WARN L207 SmtUtils]: Spent 29.61 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 23:13:46,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:13:46 BoogieIcfgContainer [2021-10-28 23:13:46,181 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:13:46,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:13:46,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:13:46,182 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:13:46,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:11:43" (3/4) ... [2021-10-28 23:13:46,185 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:13:46,241 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:13:46,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:13:46,243 INFO L168 Benchmark]: Toolchain (without parser) took 124322.80 ms. Allocated memory was 92.3 MB in the beginning and 155.2 MB in the end (delta: 62.9 MB). Free memory was 56.2 MB in the beginning and 75.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:46,244 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 65.1 MB in the end (delta: 32.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:46,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.47 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 56.0 MB in the beginning and 82.1 MB in the end (delta: -26.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:46,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.81 ms. Allocated memory is still 115.3 MB. Free memory was 82.1 MB in the beginning and 79.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:46,246 INFO L168 Benchmark]: Boogie Preprocessor took 37.50 ms. Allocated memory is still 115.3 MB. Free memory was 79.0 MB in the beginning and 76.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:46,247 INFO L168 Benchmark]: RCFGBuilder took 891.92 ms. Allocated memory is still 115.3 MB. Free memory was 76.9 MB in the beginning and 89.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:46,248 INFO L168 Benchmark]: BuchiAutomizer took 122684.38 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 89.3 MB in the beginning and 78.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 92.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:46,248 INFO L168 Benchmark]: Witness Printer took 60.25 ms. Allocated memory is still 155.2 MB. Free memory was 78.1 MB in the beginning and 75.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:46,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 65.1 MB in the end (delta: 32.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.47 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 56.0 MB in the beginning and 82.1 MB in the end (delta: -26.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.81 ms. Allocated memory is still 115.3 MB. Free memory was 82.1 MB in the beginning and 79.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.50 ms. Allocated memory is still 115.3 MB. Free memory was 79.0 MB in the beginning and 76.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 891.92 ms. Allocated memory is still 115.3 MB. Free memory was 76.9 MB in the beginning and 89.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 122684.38 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 89.3 MB in the beginning and 78.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 92.3 MB. Max. memory is 16.1 GB. * Witness Printer took 60.25 ms. Allocated memory is still 155.2 MB. Free memory was 78.1 MB in the beginning and 75.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 236 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 122.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 122.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 162 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 236 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 370 SDtfs, 585 SDslu, 497 SDs, 0 SdLazy, 67 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 65]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=12713} State at position 1 is {NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@515dcbf8=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d3e2f3c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77849530=0, NULL=12713, NULL=0, methaneLevelCritical=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d6a9911=0, retValue_acc=0, tmp___1=0, NULL=12740, NULL=12722, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=12715, tmp=0, NULL=0, NULL=0, waterLevel=1, NULL=12730, NULL=0, tmp___0=0, NULL=12735, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=12736, tmp=1, NULL=0, \result=1, NULL=0, NULL=12734, NULL=0, tmp=1, retValue_acc=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@565d185=0, NULL=12733, NULL=12716, tmp=0, head=0, NULL=12741, NULL=12726, NULL=12725, NULL=0, retValue_acc=0, NULL=0, NULL=12728, NULL=12732, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@991ca46=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f89508b=0, tmp___0=0, NULL=12727, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bbad172=0, NULL=12738, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ca7a747=0, NULL=12724, NULL=12731, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@532b8b8b=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=12720, NULL=12729, \result=0, NULL=12739, NULL=12719, NULL=0, NULL=0, NULL=0, NULL=0, NULL=12723, tmp___2=66, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=12721, NULL=12718, tmp___1=0, NULL=12714, NULL=12737, NULL=12717} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L122] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L559] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L801] int waterLevel = 1; [L802] int methaneLevelCritical = 0; [L199] int retValue_acc ; [L200] int tmp ; [L921] int retValue_acc ; [L924] retValue_acc = 1 [L925] return (retValue_acc); [L206] tmp = valid_product() [L208] COND TRUE \read(tmp) [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 Loop: [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) [L385] systemActive = 1 [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L363] int retValue_acc ; [L364] int tmp ; [L365] int tmp___0 ; [L881] int retValue_acc ; [L884] COND TRUE waterLevel < 2 [L885] retValue_acc = 1 [L886] return (retValue_acc); [L369] tmp = isHighWaterSensorDry() [L371] COND TRUE \read(tmp) [L372] tmp___0 = 0 [L376] retValue_acc = tmp___0 [L377] return (retValue_acc); [L271] tmp = isHighWaterLevel() [L273] COND FALSE !(\read(tmp)) [L759] int tmp ; [L760] int tmp___0 ; [L761] int tmp___1 ; [L840] int retValue_acc ; [L843] retValue_acc = methaneLevelCritical [L844] return (retValue_acc); [L765] tmp = isMethaneLevelCritical() [L767] COND FALSE !(\read(tmp)) [L872] int retValue_acc ; [L875] retValue_acc = waterLevel [L876] return (retValue_acc); [L771] tmp___0 = getWaterLevel() [L773] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:13:46,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e678e87d-bfbf-44e6-8ede-e5b0b9ff0118/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...