./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product45.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_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg --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 603cfb64133b588a2e9c81e31ac984484d295feb0a468539180131e3ac5a47d6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 08:59:05,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:59:05,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:59:05,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:59:05,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:59:05,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:59:05,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:59:05,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:59:05,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:59:05,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:59:05,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:59:05,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:59:05,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:59:05,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:59:05,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:59:05,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:59:05,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:59:05,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:59:05,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:59:05,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:59:05,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:59:05,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:59:05,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:59:05,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:59:05,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:59:05,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:59:05,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:59:05,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:59:05,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:59:05,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:59:05,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:59:05,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:59:05,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:59:05,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:59:05,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:59:05,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:59:05,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:59:05,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:59:05,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:59:05,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:59:05,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:59:05,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:59:05,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:59:05,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:59:05,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:59:05,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:59:05,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:59:05,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:59:05,931 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:59:05,931 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:59:05,931 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:59:05,932 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:59:05,933 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:59:05,933 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:59:05,933 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:59:05,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:59:05,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:59:05,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:59:05,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:59:05,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:59:05,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:59:05,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:59:05,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:59:05,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:59:05,935 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:59:05,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:59:05,936 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:59:05,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:59:05,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:59:05,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:59:05,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:59:05,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:59:05,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:59:05,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:59:05,940 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:59:05,941 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_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 603cfb64133b588a2e9c81e31ac984484d295feb0a468539180131e3ac5a47d6 [2021-10-28 08:59:06,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:59:06,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:59:06,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:59:06,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:59:06,246 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:59:06,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c [2021-10-28 08:59:06,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/data/4aebbc204/aecf00ab68a04903a26f25b75eb104c3/FLAG0bb95abcf [2021-10-28 08:59:06,834 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:59:06,835 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c [2021-10-28 08:59:06,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/data/4aebbc204/aecf00ab68a04903a26f25b75eb104c3/FLAG0bb95abcf [2021-10-28 08:59:07,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/data/4aebbc204/aecf00ab68a04903a26f25b75eb104c3 [2021-10-28 08:59:07,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:59:07,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:59:07,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:07,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:59:07,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:59:07,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:07,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b21f0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07, skipping insertion in model container [2021-10-28 08:59:07,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:07,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:59:07,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:59:07,625 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_e1047825-75d1-44ca-ab9b-56e2c4ac885a/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c[3064,3077] [2021-10-28 08:59:07,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:07,784 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:59:07,834 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_e1047825-75d1-44ca-ab9b-56e2c4ac885a/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c[3064,3077] [2021-10-28 08:59:07,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:07,919 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:59:07,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07 WrapperNode [2021-10-28 08:59:07,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:07,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:59:07,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:59:07,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:59:07,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:07,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:07,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:59:07,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:59:07,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:59:07,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:59:08,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:59:08,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:59:08,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:59:08,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:59:08,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (1/1) ... [2021-10-28 08:59:08,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:59:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:08,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:59:08,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:59:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:59:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:59:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:59:08,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:59:09,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:59:09,164 INFO L299 CfgBuilder]: Removed 206 assume(true) statements. [2021-10-28 08:59:09,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:09 BoogieIcfgContainer [2021-10-28 08:59:09,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:59:09,167 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:59:09,167 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:59:09,170 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:59:09,171 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:59:09,171 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:59:07" (1/3) ... [2021-10-28 08:59:09,172 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a1da623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:59:09, skipping insertion in model container [2021-10-28 08:59:09,172 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:59:09,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:07" (2/3) ... [2021-10-28 08:59:09,173 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a1da623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:59:09, skipping insertion in model container [2021-10-28 08:59:09,173 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:59:09,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:09" (3/3) ... [2021-10-28 08:59:09,175 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2021-10-28 08:59:09,218 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:59:09,218 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:59:09,218 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:59:09,219 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:59:09,219 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:59:09,219 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:59:09,219 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:59:09,219 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:59:09,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 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 08:59:09,276 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 08:59:09,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:59:09,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:59:09,284 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,285 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,285 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:59:09,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 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 08:59:09,297 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-28 08:59:09,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:59:09,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:59:09,299 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,299 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,304 INFO L791 eck$LassoCheckResult]: Stem: 115#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 35#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 52#L869true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 21#L877true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 84#L965true assume 0 != main_~tmp~9; 103#L941true ~switchedOnBeforeTS~0 := 0; 120#L533true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 9#L554-1true [2021-10-28 08:59:09,305 INFO L793 eck$LassoCheckResult]: Loop: 9#L554-1true assume !false; 78#L790true assume test_~splverifierCounter~0 < 4; 30#L791true test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 121#L799true assume !(0 != test_~tmp~8); 105#L799-1true test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 118#L809true assume !(0 != test_~tmp___0~2); 101#L809-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 48#L819true assume 0 != test_~tmp___2~0; 124#L825-2true havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 88#L718true __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 46#L543true assume !(0 != ~pumpRunning~0); 44#L590true assume !(0 != ~systemActive~0); 111#L597true havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 123#L132true __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 137#L554true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 9#L554-1true [2021-10-28 08:59:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 08:59:09,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:09,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091030128] [2021-10-28 08:59:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:09,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:09,611 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:59:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:09,852 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:59:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:09,869 INFO L85 PathProgramCache]: Analyzing trace with hash 96567276, now seen corresponding path program 1 times [2021-10-28 08:59:09,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:09,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141948118] [2021-10-28 08:59:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:09,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:09,879 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:59:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:09,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:59:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2030592486, now seen corresponding path program 1 times [2021-10-28 08:59:09,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:09,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022325303] [2021-10-28 08:59:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:09,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:10,079 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 08:59:10,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:10,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022325303] [2021-10-28 08:59:10,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022325303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:10,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:10,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:59:10,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665186219] [2021-10-28 08:59:10,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:59:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:59:10,269 INFO L87 Difference]: Start difference. First operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:10,461 INFO L93 Difference]: Finished difference Result 135 states and 190 transitions. [2021-10-28 08:59:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:59:10,464 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 190 transitions. [2021-10-28 08:59:10,469 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-28 08:59:10,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 128 states and 183 transitions. [2021-10-28 08:59:10,486 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 128 [2021-10-28 08:59:10,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 128 [2021-10-28 08:59:10,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 183 transitions. [2021-10-28 08:59:10,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:10,491 INFO L681 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-10-28 08:59:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 183 transitions. [2021-10-28 08:59:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-28 08:59:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 128 states have (on average 1.4296875) internal successors, (183), 127 states have internal predecessors, (183), 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 08:59:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 183 transitions. [2021-10-28 08:59:10,526 INFO L704 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-10-28 08:59:10,526 INFO L587 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-10-28 08:59:10,526 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:59:10,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 183 transitions. [2021-10-28 08:59:10,529 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-10-28 08:59:10,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:59:10,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:59:10,530 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:10,531 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:10,531 INFO L791 eck$LassoCheckResult]: Stem: 411#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 344#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 345#L869 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 323#L877 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 324#L965 assume 0 != main_~tmp~9; 397#L941 ~switchedOnBeforeTS~0 := 0; 407#L533 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 298#L554-1 [2021-10-28 08:59:10,531 INFO L793 eck$LassoCheckResult]: Loop: 298#L554-1 assume !false; 299#L790 assume test_~splverifierCounter~0 < 4; 335#L791 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 336#L799 assume !(0 != test_~tmp~8); 387#L799-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 408#L809 assume !(0 != test_~tmp___0~2); 374#L809-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 361#L819 assume 0 != test_~tmp___2~0; 363#L825-2 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 399#L718 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 360#L543 assume !(0 != ~pumpRunning~0); 293#L590 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 357#L648 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 340#L622-1 assume !(0 == ~pumpRunning~0); 295#L597 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 409#L132 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 413#L554 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 298#L554-1 [2021-10-28 08:59:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:10,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 08:59:10,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:10,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327114092] [2021-10-28 08:59:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:10,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:10,580 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:59:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:10,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:59:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:10,695 INFO L85 PathProgramCache]: Analyzing trace with hash -473447858, now seen corresponding path program 1 times [2021-10-28 08:59:10,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:10,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646714639] [2021-10-28 08:59:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:10,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:10,720 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 08:59:10,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:10,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646714639] [2021-10-28 08:59:10,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646714639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:10,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:10,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:59:10,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082308606] [2021-10-28 08:59:10,730 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:59:10,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:10,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:59:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:59:10,732 INFO L87 Difference]: Start difference. First operand 128 states and 183 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:10,835 INFO L93 Difference]: Finished difference Result 177 states and 242 transitions. [2021-10-28 08:59:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:59:10,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 242 transitions. [2021-10-28 08:59:10,841 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-10-28 08:59:10,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 242 transitions. [2021-10-28 08:59:10,846 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2021-10-28 08:59:10,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2021-10-28 08:59:10,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 242 transitions. [2021-10-28 08:59:10,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:10,855 INFO L681 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-10-28 08:59:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 242 transitions. [2021-10-28 08:59:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-10-28 08:59:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 176 states have internal predecessors, (242), 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 08:59:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2021-10-28 08:59:10,897 INFO L704 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-10-28 08:59:10,897 INFO L587 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-10-28 08:59:10,897 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:59:10,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 242 transitions. [2021-10-28 08:59:10,899 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-10-28 08:59:10,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:59:10,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:59:10,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:10,905 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:10,905 INFO L791 eck$LassoCheckResult]: Stem: 727#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 655#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 656#L869 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 634#L877 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 635#L965 assume 0 != main_~tmp~9; 712#L941 ~switchedOnBeforeTS~0 := 0; 722#L533 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 614#L554-1 [2021-10-28 08:59:10,906 INFO L793 eck$LassoCheckResult]: Loop: 614#L554-1 assume !false; 615#L790 assume test_~splverifierCounter~0 < 4; 646#L791 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 647#L799 assume !(0 != test_~tmp~8); 699#L799-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 724#L809 assume !(0 != test_~tmp___0~2); 687#L809-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 673#L819 assume 0 != test_~tmp___2~0; 675#L825-2 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 713#L718 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 672#L543 assume !(0 != ~pumpRunning~0); 668#L590 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 669#L648 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 651#L622-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 652#L140-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 665#L145-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 662#L767-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 663#L767-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 693#L773-1 processEnvironment__wrappee__methaneQuery_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret55;havoc processEnvironment__wrappee__methaneQuery_#t~ret55; 684#L626-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 606#L597 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 725#L132 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 730#L554 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 614#L554-1 [2021-10-28 08:59:10,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 08:59:10,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:10,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693184149] [2021-10-28 08:59:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:10,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:10,946 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:59:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:10,993 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:59:10,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 793590522, now seen corresponding path program 1 times [2021-10-28 08:59:10,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:10,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015541909] [2021-10-28 08:59:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:10,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:11,026 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 08:59:11,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:11,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015541909] [2021-10-28 08:59:11,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015541909] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:11,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:11,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:59:11,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814523286] [2021-10-28 08:59:11,028 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:59:11,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:59:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:11,029 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. cyclomatic complexity: 67 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:11,195 INFO L93 Difference]: Finished difference Result 497 states and 667 transitions. [2021-10-28 08:59:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:59:11,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 497 states and 667 transitions. [2021-10-28 08:59:11,204 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 319 [2021-10-28 08:59:11,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 497 states to 497 states and 667 transitions. [2021-10-28 08:59:11,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 497 [2021-10-28 08:59:11,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 497 [2021-10-28 08:59:11,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 497 states and 667 transitions. [2021-10-28 08:59:11,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:11,215 INFO L681 BuchiCegarLoop]: Abstraction has 497 states and 667 transitions. [2021-10-28 08:59:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states and 667 transitions. [2021-10-28 08:59:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 347. [2021-10-28 08:59:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 347 states have (on average 1.3342939481268012) internal successors, (463), 346 states have internal predecessors, (463), 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 08:59:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 463 transitions. [2021-10-28 08:59:11,231 INFO L704 BuchiCegarLoop]: Abstraction has 347 states and 463 transitions. [2021-10-28 08:59:11,231 INFO L587 BuchiCegarLoop]: Abstraction has 347 states and 463 transitions. [2021-10-28 08:59:11,231 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:59:11,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 347 states and 463 transitions. [2021-10-28 08:59:11,234 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2021-10-28 08:59:11,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:59:11,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:59:11,235 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:11,236 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:11,237 INFO L791 eck$LassoCheckResult]: Stem: 1432#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1347#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 1348#L869 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1325#L877 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 1326#L965 assume 0 != main_~tmp~9; 1409#L941 ~switchedOnBeforeTS~0 := 0; 1425#L533 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1304#L554-1 [2021-10-28 08:59:11,237 INFO L793 eck$LassoCheckResult]: Loop: 1304#L554-1 assume !false; 1305#L790 assume test_~splverifierCounter~0 < 4; 1339#L791 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 1340#L799 assume !(0 != test_~tmp~8); 1427#L799-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 1428#L809 assume !(0 != test_~tmp___0~2); 1381#L809-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 1366#L819 assume 0 != test_~tmp___2~0; 1368#L825-2 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 1412#L718 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 1364#L543 assume !(0 != ~pumpRunning~0); 1361#L590 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1362#L648 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1343#L622-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1344#L140-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1360#L145-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 1355#L767-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1356#L767-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1387#L773-1 processEnvironment__wrappee__methaneQuery_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret55;havoc processEnvironment__wrappee__methaneQuery_#t~ret55; 1530#L626-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 1296#L597 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1527#L132 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 1440#L554 assume 2 != __utac_acc__Specification5_spec__3_~tmp~3;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 1439#L718-1 __utac_acc__Specification5_spec__3_#t~ret54 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret54;havoc __utac_acc__Specification5_spec__3_#t~ret54; 1438#L558 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1304#L554-1 [2021-10-28 08:59:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 08:59:11,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:11,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072991995] [2021-10-28 08:59:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:11,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:11,287 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:59:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:11,349 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:59:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1863698731, now seen corresponding path program 1 times [2021-10-28 08:59:11,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:11,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456980122] [2021-10-28 08:59:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:11,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:11,362 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:59:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:11,377 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:59:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1927124913, now seen corresponding path program 1 times [2021-10-28 08:59:11,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:11,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826113335] [2021-10-28 08:59:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:11,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:11,424 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:59:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:59:11,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:00:10,362 WARN L207 SmtUtils]: Spent 58.54 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 09:01:11,300 WARN L207 SmtUtils]: Spent 29.11 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 09:01:11,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:01:11 BoogieIcfgContainer [2021-10-28 09:01:11,421 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:01:11,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:01:11,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:01:11,422 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:01:11,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:09" (3/4) ... [2021-10-28 09:01:11,427 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:01:11,478 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:01:11,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:01:11,480 INFO L168 Benchmark]: Toolchain (without parser) took 124142.60 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 67.7 MB in the beginning and 69.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 72.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:11,480 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory was 54.4 MB in the beginning and 54.3 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:01:11,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.35 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 66.9 MB in the end (delta: 853.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:11,481 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.35 ms. Allocated memory is still 100.7 MB. Free memory was 66.9 MB in the beginning and 62.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:11,482 INFO L168 Benchmark]: Boogie Preprocessor took 70.64 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 60.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:11,482 INFO L168 Benchmark]: RCFGBuilder took 1101.21 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 60.0 MB in the beginning and 79.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:11,483 INFO L168 Benchmark]: BuchiAutomizer took 122254.56 ms. Allocated memory was 134.2 MB in the beginning and 176.2 MB in the end (delta: 41.9 MB). Free memory was 78.9 MB in the beginning and 72.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:11,484 INFO L168 Benchmark]: Witness Printer took 56.58 ms. Allocated memory is still 176.2 MB. Free memory was 72.0 MB in the beginning and 69.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:11,487 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 100.7 MB. Free memory was 54.4 MB in the beginning and 54.3 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 582.35 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 66.9 MB in the end (delta: 853.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.35 ms. Allocated memory is still 100.7 MB. Free memory was 66.9 MB in the beginning and 62.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.64 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 60.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1101.21 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 60.0 MB in the beginning and 79.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 122254.56 ms. Allocated memory was 134.2 MB in the beginning and 176.2 MB in the end (delta: 41.9 MB). Free memory was 78.9 MB in the beginning and 72.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. * Witness Printer took 56.58 ms. Allocated memory is still 176.2 MB. Free memory was 72.0 MB in the beginning and 69.0 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 6 locations. The remainder module has 347 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 122.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 121.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 150 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 347 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 610 SDtfs, 1303 SDslu, 631 SDs, 0 SdLazy, 127 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 789]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30348} State at position 1 is {NULL=0, NULL=0, NULL=30361, NULL=0, NULL=30348, NULL=30363, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61ee228a=0, NULL=30376, methaneLevelCritical=0, retValue_acc=1, NULL=0, retValue_acc=0, NULL=30357, tmp=0, tmp___1=0, NULL=0, NULL=30364, NULL=30365, cleanupTimeShifts=4, NULL=30355, NULL=30349, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b0f4d54=0, NULL=0, NULL=30367, NULL=30371, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=30352, NULL=0, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@323dc957=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e447e57=0, head=0, tmp=0, tmp=1, NULL=0, NULL=0, NULL=30359, tmp=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b0e9825=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ca5dfe6=0, NULL=0, NULL=30353, NULL=30354, NULL=30368, NULL=30351, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53256da2=0, tmp___0=0, tmp=1, NULL=0, NULL=0, NULL=0, switchedOnBeforeTS=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32e46d9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23a06682=55, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74637507=0, NULL=0, systemActive=1, \result=1, NULL=0, NULL=30366, \result=0, NULL=0, NULL=30369, retValue_acc=0, NULL=30375, tmp___0=0, NULL=30370, \result=0, NULL=30356, NULL=0, NULL=30358, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@650ecdc4=0, NULL=30360, NULL=30373, tmp___2=55, splverifierCounter=0, NULL=0, NULL=30374, NULL=30372, NULL=30350, NULL=30362, NULL=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L329] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L527] int switchedOnBeforeTS ; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L882] int cleanupTimeShifts = 4; [L956] int retValue_acc ; [L957] int tmp ; [L873] int retValue_acc ; [L876] retValue_acc = 1 [L877] return (retValue_acc); [L963] tmp = valid_product() [L965] COND TRUE \read(tmp) [L532] switchedOnBeforeTS = 0 [L780] int splverifierCounter ; [L781] int tmp ; [L782] int tmp___0 ; [L783] int tmp___1 ; [L784] int tmp___2 ; [L787] splverifierCounter = 0 Loop: [L789] COND TRUE 1 [L791] COND TRUE splverifierCounter < 4 [L797] tmp = __VERIFIER_nondet_int() [L799] COND FALSE !(\read(tmp)) [L807] tmp___0 = __VERIFIER_nondet_int() [L809] COND FALSE !(\read(tmp___0)) [L817] tmp___2 = __VERIFIER_nondet_int() [L819] COND TRUE \read(tmp___2) [L714] int retValue_acc ; [L717] retValue_acc = pumpRunning [L718] return (retValue_acc); [L541] switchedOnBeforeTS = isPumpRunning() [L590] COND FALSE !(\read(pumpRunning)) [L597] COND TRUE \read(systemActive) [L645] int tmp ; [L648] COND FALSE !(\read(pumpRunning)) [L619] int tmp ; [L622] COND TRUE ! pumpRunning [L759] int retValue_acc ; [L760] int tmp ; [L761] int tmp___0 ; [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L765] tmp = isHighWaterSensorDry() [L767] COND TRUE \read(tmp) [L768] tmp___0 = 0 [L772] retValue_acc = tmp___0 [L773] return (retValue_acc); [L624] tmp = isHighWaterLevel() [L626] COND FALSE !(\read(tmp)) [L547] int tmp ; [L548] int tmp___0 ; [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L552] tmp = getWaterLevel() [L554] COND TRUE tmp != 2 [L714] int retValue_acc ; [L717] retValue_acc = pumpRunning [L718] return (retValue_acc); [L556] tmp___0 = isPumpRunning() [L558] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:01:11,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1047825-75d1-44ca-ab9b-56e2c4ac885a/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...