./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be --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 80b4c453e300455caffbcb636daccd3af095acb6ed433fb3111a61f5db77a0b9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-21 20:23:33,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:23:33,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:23:33,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:23:33,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:23:33,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:23:33,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:23:33,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:23:33,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:23:33,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:23:33,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:23:33,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:23:33,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:23:33,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:23:33,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:23:33,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:23:33,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:23:33,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:23:33,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:23:33,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:23:33,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:23:33,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:23:33,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:23:33,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:23:33,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:23:33,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:23:33,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:23:33,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:23:33,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:23:33,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:23:33,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:23:33,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:23:33,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:23:33,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:23:33,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:23:33,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:23:33,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:23:33,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:23:33,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:23:33,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:23:33,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:23:33,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:23:33,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:23:33,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:23:33,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:23:33,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:23:33,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:23:33,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:23:33,938 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:23:33,938 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:23:33,939 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:23:33,939 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:23:33,939 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:23:33,939 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:23:33,939 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:23:33,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:23:33,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:23:33,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:23:33,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:23:33,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:23:33,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:23:33,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:23:33,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:23:33,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:23:33,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:23:33,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:23:33,942 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:23:33,942 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:23:33,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:23:33,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:23:33,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:23:33,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:23:33,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:23:33,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:23:33,944 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:23:33,944 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_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80b4c453e300455caffbcb636daccd3af095acb6ed433fb3111a61f5db77a0b9 [2021-10-21 20:23:34,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:23:34,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:23:34,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:23:34,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:23:34,228 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:23:34,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2021-10-21 20:23:34,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/data/41266f184/b4e2f4714c38484aa065c6690ab2bcca/FLAG4fdc003f8 [2021-10-21 20:23:34,775 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:23:34,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2021-10-21 20:23:34,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/data/41266f184/b4e2f4714c38484aa065c6690ab2bcca/FLAG4fdc003f8 [2021-10-21 20:23:35,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/data/41266f184/b4e2f4714c38484aa065c6690ab2bcca [2021-10-21 20:23:35,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:23:35,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:23:35,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:23:35,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:23:35,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:23:35,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d234f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35, skipping insertion in model container [2021-10-21 20:23:35,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:23:35,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:23:35,354 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_b8fa956e-59f7-47f4-8fe5-7d487159a12c/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c[1605,1618] [2021-10-21 20:23:35,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:23:35,491 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:23:35,520 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_b8fa956e-59f7-47f4-8fe5-7d487159a12c/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c[1605,1618] [2021-10-21 20:23:35,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:23:35,653 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:23:35,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35 WrapperNode [2021-10-21 20:23:35,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:23:35,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:23:35,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:23:35,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:23:35,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:23:35,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:23:35,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:23:35,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:23:35,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:23:35,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:23:35,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:23:35,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:23:35,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (1/1) ... [2021-10-21 20:23:35,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:23:35,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:23:35,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:23:35,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:23:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:23:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:23:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:23:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:23:36,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:23:36,755 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-10-21 20:23:36,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:36 BoogieIcfgContainer [2021-10-21 20:23:36,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:23:36,759 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:23:36,759 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:23:36,777 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:23:36,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:23:36,778 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:23:35" (1/3) ... [2021-10-21 20:23:36,779 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e5b3ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:23:36, skipping insertion in model container [2021-10-21 20:23:36,779 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:23:36,779 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:23:35" (2/3) ... [2021-10-21 20:23:36,780 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e5b3ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:23:36, skipping insertion in model container [2021-10-21 20:23:36,780 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:23:36,780 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:36" (3/3) ... [2021-10-21 20:23:36,781 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2021-10-21 20:23:36,848 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:23:36,848 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:23:36,848 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:23:36,848 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:23:36,849 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:23:36,849 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:23:36,849 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:23:36,849 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:23:36,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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) [2021-10-21 20:23:36,894 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-21 20:23:36,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:23:36,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:23:36,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:36,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:36,902 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:23:36,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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) [2021-10-21 20:23:36,911 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-10-21 20:23:36,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:23:36,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:23:36,913 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:36,913 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:36,918 INFO L791 eck$LassoCheckResult]: Stem: 132#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 53#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 79#L532true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 33#L540true main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 101#L496true assume 0 != main_~tmp~7; 11#L469true ~methAndRunningLastTime~0 := 0; 138#L377true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 122#L388-1true [2021-10-21 20:23:36,919 INFO L793 eck$LassoCheckResult]: Loop: 122#L388-1true assume !false; 58#L315true assume test_~splverifierCounter~0 < 4; 129#L316true test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 20#L324true assume !(0 != test_~tmp~5); 106#L324-1true test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 38#L334true assume !(0 != test_~tmp___0~2); 50#L334-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 36#L344true assume 0 != test_~tmp___2~0; 76#L350-1true assume !(0 != ~pumpRunning~0); 32#L78true assume !(0 != ~systemActive~0); 47#L85true havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 82#L955-2true __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 30#L388true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 122#L388-1true [2021-10-21 20:23:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-21 20:23:36,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:36,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174708024] [2021-10-21 20:23:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:36,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:37,177 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:37,372 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:37,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash 13773843, now seen corresponding path program 1 times [2021-10-21 20:23:37,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:37,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708254106] [2021-10-21 20:23:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:37,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:37,383 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:37,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash 847070349, now seen corresponding path program 1 times [2021-10-21 20:23:37,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:37,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940809610] [2021-10-21 20:23:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:37,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:37,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:37,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940809610] [2021-10-21 20:23:37,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940809610] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:37,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:37,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:23:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000326088] [2021-10-21 20:23:37,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:23:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:23:37,750 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-10-21 20:23:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:37,955 INFO L93 Difference]: Finished difference Result 322 states and 463 transitions. [2021-10-21 20:23:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:23:37,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 463 transitions. [2021-10-21 20:23:37,966 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 207 [2021-10-21 20:23:37,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 301 states and 442 transitions. [2021-10-21 20:23:37,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2021-10-21 20:23:37,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2021-10-21 20:23:37,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 301 states and 442 transitions. [2021-10-21 20:23:37,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:23:37,980 INFO L681 BuchiCegarLoop]: Abstraction has 301 states and 442 transitions. [2021-10-21 20:23:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states and 442 transitions. [2021-10-21 20:23:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 175. [2021-10-21 20:23:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 175 states have (on average 1.4628571428571429) internal successors, (256), 174 states have internal predecessors, (256), 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) [2021-10-21 20:23:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 256 transitions. [2021-10-21 20:23:38,021 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2021-10-21 20:23:38,021 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2021-10-21 20:23:38,021 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:23:38,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 256 transitions. [2021-10-21 20:23:38,023 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2021-10-21 20:23:38,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:23:38,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:23:38,025 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:38,025 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:38,025 INFO L791 eck$LassoCheckResult]: Stem: 609#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 558#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 559#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 531#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 532#L496 assume 0 != main_~tmp~7; 491#L469 ~methAndRunningLastTime~0 := 0; 492#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 521#L388-1 [2021-10-21 20:23:38,025 INFO L793 eck$LassoCheckResult]: Loop: 521#L388-1 assume !false; 567#L315 assume test_~splverifierCounter~0 < 4; 568#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 508#L324 assume !(0 != test_~tmp~5); 510#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 541#L334 assume !(0 != test_~tmp___0~2); 543#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 537#L344 assume 0 != test_~tmp___2~0; 539#L350-1 assume !(0 != ~pumpRunning~0); 507#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 511#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 512#L110-1 assume !(0 == ~pumpRunning~0); 522#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 551#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 527#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 521#L388-1 [2021-10-21 20:23:38,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:38,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-21 20:23:38,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:38,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467207628] [2021-10-21 20:23:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:38,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:38,083 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:38,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:38,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:38,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1366037980, now seen corresponding path program 1 times [2021-10-21 20:23:38,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:38,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722909359] [2021-10-21 20:23:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:38,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:38,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:38,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722909359] [2021-10-21 20:23:38,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722909359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:38,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:38,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:23:38,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107043905] [2021-10-21 20:23:38,205 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:23:38,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:38,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:23:38,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:23:38,208 INFO L87 Difference]: Start difference. First operand 175 states and 256 transitions. cyclomatic complexity: 84 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-21 20:23:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:38,306 INFO L93 Difference]: Finished difference Result 217 states and 302 transitions. [2021-10-21 20:23:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:23:38,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 302 transitions. [2021-10-21 20:23:38,310 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-10-21 20:23:38,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 217 states and 302 transitions. [2021-10-21 20:23:38,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-10-21 20:23:38,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-10-21 20:23:38,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 302 transitions. [2021-10-21 20:23:38,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:23:38,323 INFO L681 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-10-21 20:23:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 302 transitions. [2021-10-21 20:23:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-10-21 20:23:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 217 states have (on average 1.391705069124424) internal successors, (302), 216 states have internal predecessors, (302), 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) [2021-10-21 20:23:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 302 transitions. [2021-10-21 20:23:38,344 INFO L704 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-10-21 20:23:38,345 INFO L587 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-10-21 20:23:38,345 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:23:38,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 217 states and 302 transitions. [2021-10-21 20:23:38,349 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-10-21 20:23:38,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:23:38,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:23:38,351 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:38,351 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:38,352 INFO L791 eck$LassoCheckResult]: Stem: 1014#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 958#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 959#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 931#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 932#L496 assume 0 != main_~tmp~7; 890#L469 ~methAndRunningLastTime~0 := 0; 891#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 920#L388-1 [2021-10-21 20:23:38,352 INFO L793 eck$LassoCheckResult]: Loop: 920#L388-1 assume !false; 967#L315 assume test_~splverifierCounter~0 < 4; 968#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 907#L324 assume !(0 != test_~tmp~5); 909#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 940#L334 assume !(0 != test_~tmp___0~2); 942#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 937#L344 assume 0 != test_~tmp___2~0; 939#L350-1 assume !(0 != ~pumpRunning~0); 930#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 910#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 911#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 900#L995-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 892#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 893#L256-3 assume !(0 != isHighWaterLevel_~tmp~3);isHighWaterLevel_~tmp___0~0 := 1; 1007#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 935#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 936#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 950#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 951#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 926#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 920#L388-1 [2021-10-21 20:23:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-21 20:23:38,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:38,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107322778] [2021-10-21 20:23:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:38,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:38,419 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:38,532 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:38,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1305577226, now seen corresponding path program 1 times [2021-10-21 20:23:38,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:38,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811410727] [2021-10-21 20:23:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:38,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:38,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:38,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811410727] [2021-10-21 20:23:38,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811410727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:38,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:38,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:23:38,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622510869] [2021-10-21 20:23:38,576 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:23:38,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:23:38,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:23:38,578 INFO L87 Difference]: Start difference. First operand 217 states and 302 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-21 20:23:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:38,653 INFO L93 Difference]: Finished difference Result 421 states and 579 transitions. [2021-10-21 20:23:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:23:38,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 579 transitions. [2021-10-21 20:23:38,659 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 300 [2021-10-21 20:23:38,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 579 transitions. [2021-10-21 20:23:38,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 421 [2021-10-21 20:23:38,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 421 [2021-10-21 20:23:38,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 579 transitions. [2021-10-21 20:23:38,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:23:38,666 INFO L681 BuchiCegarLoop]: Abstraction has 421 states and 579 transitions. [2021-10-21 20:23:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 579 transitions. [2021-10-21 20:23:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 229. [2021-10-21 20:23:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 229 states have (on average 1.3711790393013101) internal successors, (314), 228 states have internal predecessors, (314), 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) [2021-10-21 20:23:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2021-10-21 20:23:38,687 INFO L704 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2021-10-21 20:23:38,687 INFO L587 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2021-10-21 20:23:38,687 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:23:38,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states and 314 transitions. [2021-10-21 20:23:38,689 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2021-10-21 20:23:38,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:23:38,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:23:38,690 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:38,690 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] [2021-10-21 20:23:38,690 INFO L791 eck$LassoCheckResult]: Stem: 1678#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1608#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 1609#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1580#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 1581#L496 assume 0 != main_~tmp~7; 1538#L469 ~methAndRunningLastTime~0 := 0; 1539#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1569#L388-1 [2021-10-21 20:23:38,690 INFO L793 eck$LassoCheckResult]: Loop: 1569#L388-1 assume !false; 1618#L315 assume test_~splverifierCounter~0 < 4; 1619#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1556#L324 assume !(0 != test_~tmp~5); 1558#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 1589#L334 assume !(0 != test_~tmp___0~2); 1591#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1586#L344 assume 0 != test_~tmp___2~0; 1588#L350-1 assume !(0 != ~pumpRunning~0); 1579#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1559#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1560#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1548#L995-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1540#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1541#L256-3 assume !(0 != isHighWaterLevel_~tmp~3);isHighWaterLevel_~tmp___0~0 := 1; 1666#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1584#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1585#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1638#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1743#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 1575#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 1569#L388-1 [2021-10-21 20:23:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:38,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-21 20:23:38,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:38,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686403559] [2021-10-21 20:23:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:38,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:38,743 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:38,796 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:38,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1985635596, now seen corresponding path program 1 times [2021-10-21 20:23:38,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:38,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117617477] [2021-10-21 20:23:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:38,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:38,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:38,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117617477] [2021-10-21 20:23:38,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117617477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:38,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:38,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:23:38,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062622265] [2021-10-21 20:23:38,845 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:23:38,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:23:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:23:38,848 INFO L87 Difference]: Start difference. First operand 229 states and 314 transitions. cyclomatic complexity: 88 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-10-21 20:23:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:38,988 INFO L93 Difference]: Finished difference Result 721 states and 989 transitions. [2021-10-21 20:23:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:23:38,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 721 states and 989 transitions. [2021-10-21 20:23:38,995 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 524 [2021-10-21 20:23:39,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 721 states to 721 states and 989 transitions. [2021-10-21 20:23:39,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 721 [2021-10-21 20:23:39,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 721 [2021-10-21 20:23:39,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 721 states and 989 transitions. [2021-10-21 20:23:39,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:23:39,014 INFO L681 BuchiCegarLoop]: Abstraction has 721 states and 989 transitions. [2021-10-21 20:23:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states and 989 transitions. [2021-10-21 20:23:39,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 247. [2021-10-21 20:23:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 1.3441295546558705) internal successors, (332), 246 states have internal predecessors, (332), 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) [2021-10-21 20:23:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2021-10-21 20:23:39,027 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 332 transitions. [2021-10-21 20:23:39,027 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 332 transitions. [2021-10-21 20:23:39,027 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 20:23:39,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 332 transitions. [2021-10-21 20:23:39,029 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 172 [2021-10-21 20:23:39,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:23:39,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:23:39,030 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:39,030 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] [2021-10-21 20:23:39,030 INFO L791 eck$LassoCheckResult]: Stem: 2650#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2575#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 2576#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 2546#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 2547#L496 assume 0 != main_~tmp~7; 2502#L469 ~methAndRunningLastTime~0 := 0; 2503#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2533#L388-1 [2021-10-21 20:23:39,030 INFO L793 eck$LassoCheckResult]: Loop: 2533#L388-1 assume !false; 2583#L315 assume test_~splverifierCounter~0 < 4; 2584#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 2702#L324 assume !(0 != test_~tmp~5); 2626#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 2627#L334 assume !(0 != test_~tmp___0~2); 2699#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 2550#L344 assume 0 != test_~tmp___2~0; 2552#L350-1 assume !(0 != ~pumpRunning~0); 2543#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2520#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2521#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 2514#L995-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 2515#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 2656#L256-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 2633#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2548#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2549#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2563#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 2564#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 2537#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 2533#L388-1 [2021-10-21 20:23:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:39,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-10-21 20:23:39,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:39,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766584444] [2021-10-21 20:23:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:39,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,066 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,116 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:39,117 INFO L82 PathProgramCache]: Analyzing trace with hash 210628234, now seen corresponding path program 1 times [2021-10-21 20:23:39,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:39,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959340000] [2021-10-21 20:23:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:39,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:23:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:23:39,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:23:39,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959340000] [2021-10-21 20:23:39,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959340000] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:23:39,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:23:39,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:23:39,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330669548] [2021-10-21 20:23:39,164 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:23:39,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:23:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:23:39,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:23:39,165 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-21 20:23:39,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:23:39,244 INFO L93 Difference]: Finished difference Result 421 states and 567 transitions. [2021-10-21 20:23:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:23:39,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 567 transitions. [2021-10-21 20:23:39,249 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 300 [2021-10-21 20:23:39,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 567 transitions. [2021-10-21 20:23:39,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 421 [2021-10-21 20:23:39,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 421 [2021-10-21 20:23:39,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 567 transitions. [2021-10-21 20:23:39,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:23:39,258 INFO L681 BuchiCegarLoop]: Abstraction has 421 states and 567 transitions. [2021-10-21 20:23:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 567 transitions. [2021-10-21 20:23:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 247. [2021-10-21 20:23:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 1.319838056680162) internal successors, (326), 246 states have internal predecessors, (326), 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) [2021-10-21 20:23:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 326 transitions. [2021-10-21 20:23:39,266 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 326 transitions. [2021-10-21 20:23:39,266 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 326 transitions. [2021-10-21 20:23:39,266 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 20:23:39,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 326 transitions. [2021-10-21 20:23:39,267 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 172 [2021-10-21 20:23:39,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:23:39,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:23:39,268 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:23:39,268 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] [2021-10-21 20:23:39,269 INFO L791 eck$LassoCheckResult]: Stem: 3329#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 3254#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 3255#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 3223#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 3224#L496 assume 0 != main_~tmp~7; 3180#L469 ~methAndRunningLastTime~0 := 0; 3181#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3333#L388-1 [2021-10-21 20:23:39,269 INFO L793 eck$LassoCheckResult]: Loop: 3333#L388-1 assume !false; 3394#L315 assume test_~splverifierCounter~0 < 4; 3326#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 3199#L324 assume !(0 != test_~tmp~5); 3201#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 3232#L334 assume !(0 != test_~tmp___0~2); 3234#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 3229#L344 assume 0 != test_~tmp___2~0; 3231#L350-1 assume !(0 != ~pumpRunning~0); 3222#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 3202#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 3203#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 3191#L995-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 3192#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 3313#L256-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 3314#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 3227#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 3228#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 3287#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 3399#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 3397#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 3333#L388-1 [2021-10-21 20:23:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:39,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 6 times [2021-10-21 20:23:39,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:39,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130029858] [2021-10-21 20:23:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:39,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,328 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:39,384 INFO L82 PathProgramCache]: Analyzing trace with hash -469430136, now seen corresponding path program 1 times [2021-10-21 20:23:39,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:39,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332410705] [2021-10-21 20:23:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:39,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,393 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,406 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:23:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:23:39,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1303711490, now seen corresponding path program 1 times [2021-10-21 20:23:39,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:23:39,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658115619] [2021-10-21 20:23:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:39,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:23:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,445 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:23:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:23:39,490 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:24:35,160 WARN L207 SmtUtils]: Spent 55.42 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-21 20:25:31,887 WARN L207 SmtUtils]: Spent 27.66 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-21 20:25:32,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:25:32 BoogieIcfgContainer [2021-10-21 20:25:32,043 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:25:32,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:25:32,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:25:32,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:25:32,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:23:36" (3/4) ... [2021-10-21 20:25:32,047 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:25:32,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:25:32,121 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:25:32,123 INFO L168 Benchmark]: Toolchain (without parser) took 117024.91 ms. Allocated memory was 109.1 MB in the beginning and 211.8 MB in the end (delta: 102.8 MB). Free memory was 72.1 MB in the beginning and 68.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 104.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:32,123 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:25:32,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.22 ms. Allocated memory is still 109.1 MB. Free memory was 71.9 MB in the beginning and 77.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:32,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.55 ms. Allocated memory is still 109.1 MB. Free memory was 77.1 MB in the beginning and 72.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:32,129 INFO L168 Benchmark]: Boogie Preprocessor took 84.96 ms. Allocated memory is still 109.1 MB. Free memory was 72.9 MB in the beginning and 70.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:32,129 INFO L168 Benchmark]: RCFGBuilder took 909.52 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 68.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:32,129 INFO L168 Benchmark]: BuchiAutomizer took 115284.21 ms. Allocated memory was 109.1 MB in the beginning and 211.8 MB in the end (delta: 102.8 MB). Free memory was 68.1 MB in the beginning and 71.4 MB in the end (delta: -3.3 MB). Peak memory consumption was 115.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:32,130 INFO L168 Benchmark]: Witness Printer took 77.89 ms. Allocated memory is still 211.8 MB. Free memory was 71.4 MB in the beginning and 68.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:25:32,132 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 554.22 ms. Allocated memory is still 109.1 MB. Free memory was 71.9 MB in the beginning and 77.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.55 ms. Allocated memory is still 109.1 MB. Free memory was 77.1 MB in the beginning and 72.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.96 ms. Allocated memory is still 109.1 MB. Free memory was 72.9 MB in the beginning and 70.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 909.52 ms. Allocated memory is still 109.1 MB. Free memory was 70.2 MB in the beginning and 68.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 115284.21 ms. Allocated memory was 109.1 MB in the beginning and 211.8 MB in the end (delta: 102.8 MB). Free memory was 68.1 MB in the beginning and 71.4 MB in the end (delta: -3.3 MB). Peak memory consumption was 115.4 MB. Max. memory is 16.1 GB. * Witness Printer took 77.89 ms. Allocated memory is still 211.8 MB. Free memory was 71.4 MB in the beginning and 68.5 MB in the end (delta: 2.9 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 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 247 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 115.1s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 114.2s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 88.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 966 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 247 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1311 SDtfs, 2091 SDslu, 2269 SDs, 0 SdLazy, 290 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 352.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI4 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: 314]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=32209} State at position 1 is {NULL=0, NULL=0, NULL=32219, NULL=32209, NULL=0, NULL=32224, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66ac1d93=0, NULL=0, NULL=32220, methaneLevelCritical=0, tmp=0, NULL=0, retValue_acc=0, NULL=32226, NULL=0, tmp___1=0, NULL=0, NULL=32211, cleanupTimeShifts=4, retValue_acc=0, NULL=32235, waterLevel=1, NULL=32222, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5eeb30fd=0, NULL=32221, \result=1, head=0, pumpRunning=0, NULL=32218, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1bf727a5=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a8f72f4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@557aa515=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@375b9b44=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c7f9bb9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8a7f281=0, NULL=0, tmp=1, NULL=0, NULL=32231, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ab5031c=0, NULL=0, tmp___0=0, NULL=32228, methAndRunningLastTime=0, NULL=32229, NULL=32230, tmp=0, head=0, NULL=0, NULL=32239, retValue_acc=0, NULL=32227, tmp___0=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f672408=0, NULL=0, tmp=0, NULL=0, systemActive=1, NULL=32232, NULL=0, NULL=32216, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=32210, NULL=32237, \result=0, NULL=32225, NULL=0, NULL=0, retValue_acc=1, NULL=32213, NULL=32234, NULL=32217, NULL=32215, tmp___0=0, retValue_acc=1, tmp___2=66, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=32212, NULL=32223, NULL=0, NULL=0, NULL=32236, NULL=0, NULL=32233, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L70] int pumpRunning = 0; [L71] int systemActive = 1; [L371] int methAndRunningLastTime ; [L410] int cleanupTimeShifts = 4; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L912] int waterLevel = 1; [L913] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L376] methAndRunningLastTime = 0 [L305] int splverifierCounter ; [L306] int tmp ; [L307] int tmp___0 ; [L308] int tmp___1 ; [L309] int tmp___2 ; [L312] splverifierCounter = 0 Loop: [L314] COND TRUE 1 [L316] COND TRUE splverifierCounter < 4 [L322] tmp = __VERIFIER_nondet_int() [L324] COND FALSE !(\read(tmp)) [L332] tmp___0 = __VERIFIER_nondet_int() [L334] COND FALSE !(\read(tmp___0)) [L342] tmp___2 = __VERIFIER_nondet_int() [L344] COND TRUE \read(tmp___2) [L78] COND FALSE !(\read(pumpRunning)) [L85] COND TRUE \read(systemActive) [L133] int tmp ; [L136] COND FALSE !(\read(pumpRunning)) [L107] int tmp ; [L110] COND TRUE ! pumpRunning [L248] int retValue_acc ; [L249] int tmp ; [L250] int tmp___0 ; [L992] int retValue_acc ; [L995] COND TRUE waterLevel < 2 [L996] retValue_acc = 1 [L997] return (retValue_acc); [L254] tmp = isHighWaterSensorDry() [L256] COND TRUE \read(tmp) [L257] tmp___0 = 0 [L261] retValue_acc = tmp___0 [L262] return (retValue_acc); [L112] tmp = isHighWaterLevel() [L114] COND FALSE !(\read(tmp)) [L381] int tmp ; [L382] int tmp___0 ; [L951] int retValue_acc ; [L954] retValue_acc = methaneLevelCritical [L955] return (retValue_acc); [L386] tmp = isMethaneLevelCritical() [L388] COND FALSE !(\read(tmp)) [L404] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:25:32,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8fa956e-59f7-47f4-8fe5-7d487159a12c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...