./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 27a40004774297289d55c755839f2e0c4b1c44d4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-wip.dd.multireach-323-8d31f38 [2021-07-06 20:33:33,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:33:33,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:33:34,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:33:34,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:33:34,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:33:34,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:33:34,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:33:34,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:33:34,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:33:34,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:33:34,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:33:34,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:33:34,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:33:34,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:33:34,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:33:34,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:33:34,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:33:34,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:33:34,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:33:34,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:33:34,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:33:34,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:33:34,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:33:34,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:33:34,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:33:34,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:33:34,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:33:34,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:33:34,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:33:34,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:33:34,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:33:34,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:33:34,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:33:34,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:33:34,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:33:34,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:33:34,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:33:34,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:33:34,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:33:34,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:33:34,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:33:34,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:33:34,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:33:34,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:33:34,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:33:34,135 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:33:34,135 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:33:34,136 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:33:34,136 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:33:34,136 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:33:34,136 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:33:34,137 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:33:34,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:33:34,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:33:34,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:33:34,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:33:34,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:33:34,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:33:34,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:33:34,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:33:34,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:33:34,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:33:34,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:33:34,139 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:33:34,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:33:34,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:33:34,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:33:34,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:33:34,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:33:34,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:33:34,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:33:34,142 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:33:34,142 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a40004774297289d55c755839f2e0c4b1c44d4 [2021-07-06 20:33:34,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:33:34,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:33:34,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:33:34,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:33:34,455 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:33:34,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c [2021-07-06 20:33:34,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3230234f/fc85a1e4568c412a9272823db5046ecc/FLAG79ce05418 [2021-07-06 20:33:35,034 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:33:35,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c [2021-07-06 20:33:35,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3230234f/fc85a1e4568c412a9272823db5046ecc/FLAG79ce05418 [2021-07-06 20:33:35,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3230234f/fc85a1e4568c412a9272823db5046ecc [2021-07-06 20:33:35,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:33:35,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:33:35,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:33:35,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:33:35,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:33:35,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124d0b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35, skipping insertion in model container [2021-07-06 20:33:35,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:33:35,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:33:35,663 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c[13613,13626] [2021-07-06 20:33:35,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:33:35,712 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:33:35,787 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product20.cil.c[13613,13626] [2021-07-06 20:33:35,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:33:35,823 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:33:35,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35 WrapperNode [2021-07-06 20:33:35,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:33:35,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:33:35,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:33:35,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:33:35,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:33:35,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:33:35,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:33:35,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:33:35,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:33:35,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:33:35,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:33:35,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:33:35,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (1/1) ... [2021-07-06 20:33:35,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:33:35,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:33:35,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:33:36,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:33:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:33:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:33:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:33:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:33:36,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:33:36,803 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-07-06 20:33:36,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:36 BoogieIcfgContainer [2021-07-06 20:33:36,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:33:36,805 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:33:36,805 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:33:36,808 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:33:36,808 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:33:36,826 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:33:35" (1/3) ... [2021-07-06 20:33:36,827 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d771c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:33:36, skipping insertion in model container [2021-07-06 20:33:36,827 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:33:36,827 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:35" (2/3) ... [2021-07-06 20:33:36,828 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d771c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:33:36, skipping insertion in model container [2021-07-06 20:33:36,828 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:33:36,828 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:36" (3/3) ... [2021-07-06 20:33:36,829 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product20.cil.c [2021-07-06 20:33:36,880 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:33:36,880 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:33:36,880 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:33:36,880 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:33:36,881 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:33:36,881 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:33:36,881 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:33:36,881 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:33:36,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5) internal successors, (123), 82 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:33:36,919 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-07-06 20:33:36,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:33:36,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:33:36,926 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:36,926 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:36,926 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:33:36,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5) internal successors, (123), 82 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:33:36,931 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-07-06 20:33:36,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:33:36,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:33:36,932 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:36,932 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:36,936 INFO L791 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 15#L-1true havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~8, main_~tmp~4;havoc main_~retValue_acc~8;havoc main_~tmp~4; 64#L580true havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 9#L588true main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 44#L688true assume 0 != main_~tmp~4; 50#L663true ~switchedOnBeforeTS~0 := 0; 33#L512true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 71#L533-1true [2021-07-06 20:33:36,936 INFO L793 eck$LassoCheckResult]: Loop: 71#L533-1true assume !false; 69#L715true assume test_~splverifierCounter~0 < 4; 10#L716true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 16#L724true assume !(0 != test_~tmp~5); 19#L724-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 73#L734true assume !(0 != test_~tmp___0~1); 77#L734-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 57#L744true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 84#L752-1true havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 25#L870true __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 14#L522true assume !(0 != ~pumpRunning~0); 79#L785true assume !(0 != ~systemActive~0); 66#L792true havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 35#L490true __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 12#L533true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 71#L533-1true [2021-07-06 20:33:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:36,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:33:36,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:36,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14520528] [2021-07-06 20:33:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:36,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:37,202 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:37,278 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:37,320 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:33:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:37,333 INFO L82 PathProgramCache]: Analyzing trace with hash 675133686, now seen corresponding path program 1 times [2021-07-06 20:33:37,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:37,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9671535] [2021-07-06 20:33:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:37,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:33:37,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:37,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:33:37,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:37,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:33:37,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:37,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:33:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:33:37,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:33:37,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9671535] [2021-07-06 20:33:37,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9671535] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:33:37,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:33:37,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:33:37,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771079706] [2021-07-06 20:33:37,412 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:33:37,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:33:37,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:33:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:33:37,426 INFO L87 Difference]: Start difference. First operand has 83 states, 82 states have (on average 1.5) internal successors, (123), 82 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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) [2021-07-06 20:33:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:33:37,472 INFO L93 Difference]: Finished difference Result 159 states and 221 transitions. [2021-07-06 20:33:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:33:37,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 221 transitions. [2021-07-06 20:33:37,480 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 102 [2021-07-06 20:33:37,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 145 states and 206 transitions. [2021-07-06 20:33:37,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 145 [2021-07-06 20:33:37,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 145 [2021-07-06 20:33:37,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 206 transitions. [2021-07-06 20:33:37,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:33:37,492 INFO L681 BuchiCegarLoop]: Abstraction has 145 states and 206 transitions. [2021-07-06 20:33:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 206 transitions. [2021-07-06 20:33:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-07-06 20:33:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 143 states have (on average 1.4195804195804196) internal successors, (203), 142 states have internal predecessors, (203), 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) [2021-07-06 20:33:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 203 transitions. [2021-07-06 20:33:37,537 INFO L704 BuchiCegarLoop]: Abstraction has 143 states and 203 transitions. [2021-07-06 20:33:37,537 INFO L587 BuchiCegarLoop]: Abstraction has 143 states and 203 transitions. [2021-07-06 20:33:37,537 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:33:37,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states and 203 transitions. [2021-07-06 20:33:37,545 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 100 [2021-07-06 20:33:37,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:33:37,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:33:37,548 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:37,548 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:37,549 INFO L791 eck$LassoCheckResult]: Stem: 306#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 277#L-1 havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~8, main_~tmp~4;havoc main_~retValue_acc~8;havoc main_~tmp~4; 278#L580 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 264#L588 main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 265#L688 assume 0 != main_~tmp~4; 309#L663 ~switchedOnBeforeTS~0 := 0; 299#L512 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 256#L533-1 [2021-07-06 20:33:37,549 INFO L793 eck$LassoCheckResult]: Loop: 256#L533-1 assume !false; 326#L715 assume test_~splverifierCounter~0 < 4; 266#L716 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 267#L724 assume !(0 != test_~tmp~5); 280#L724-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 284#L734 assume !(0 != test_~tmp___0~1); 328#L734-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 316#L744 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 318#L752-1 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 292#L870 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 274#L522 assume !(0 != ~pumpRunning~0); 275#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 320#L817 assume !(0 != ~pumpRunning~0); 321#L792 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 301#L490 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 270#L533 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 256#L533-1 [2021-07-06 20:33:37,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:37,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:33:37,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:37,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131171636] [2021-07-06 20:33:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:37,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:37,616 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:37,677 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:37,701 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:33:37,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:37,702 INFO L82 PathProgramCache]: Analyzing trace with hash -572685309, now seen corresponding path program 1 times [2021-07-06 20:33:37,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:37,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222627579] [2021-07-06 20:33:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:37,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:37,712 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:37,717 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:37,720 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:33:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:37,721 INFO L82 PathProgramCache]: Analyzing trace with hash -747445943, now seen corresponding path program 1 times [2021-07-06 20:33:37,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:37,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750942766] [2021-07-06 20:33:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:37,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:33:37,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:37,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:33:37,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:37,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:33:37,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:37,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:33:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:33:37,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:33:37,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750942766] [2021-07-06 20:33:37,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750942766] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:33:37,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:33:37,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:33:37,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355530135] [2021-07-06 20:33:37,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:37,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-07-06 20:33:37,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:33:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:33:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:33:37,964 INFO L87 Difference]: Start difference. First operand 143 states and 203 transitions. cyclomatic complexity: 63 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:33:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:33:38,094 INFO L93 Difference]: Finished difference Result 398 states and 558 transitions. [2021-07-06 20:33:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:33:38,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 558 transitions. [2021-07-06 20:33:38,099 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 194 [2021-07-06 20:33:38,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 558 transitions. [2021-07-06 20:33:38,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2021-07-06 20:33:38,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2021-07-06 20:33:38,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 558 transitions. [2021-07-06 20:33:38,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:33:38,105 INFO L681 BuchiCegarLoop]: Abstraction has 398 states and 558 transitions. [2021-07-06 20:33:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 558 transitions. [2021-07-06 20:33:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 279. [2021-07-06 20:33:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 279 states have (on average 1.3799283154121864) internal successors, (385), 278 states have internal predecessors, (385), 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) [2021-07-06 20:33:38,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 385 transitions. [2021-07-06 20:33:38,118 INFO L704 BuchiCegarLoop]: Abstraction has 279 states and 385 transitions. [2021-07-06 20:33:38,118 INFO L587 BuchiCegarLoop]: Abstraction has 279 states and 385 transitions. [2021-07-06 20:33:38,118 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:33:38,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 279 states and 385 transitions. [2021-07-06 20:33:38,120 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 194 [2021-07-06 20:33:38,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:33:38,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:33:38,121 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:38,121 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:33:38,121 INFO L791 eck$LassoCheckResult]: Stem: 871#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 836#L-1 havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~8, main_~tmp~4;havoc main_~retValue_acc~8;havoc main_~tmp~4; 837#L580 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 822#L588 main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 823#L688 assume 0 != main_~tmp~4; 874#L663 ~switchedOnBeforeTS~0 := 0; 862#L512 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 863#L533-1 [2021-07-06 20:33:38,121 INFO L793 eck$LassoCheckResult]: Loop: 863#L533-1 assume !false; 899#L715 assume test_~splverifierCounter~0 < 4; 900#L716 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 969#L724 assume !(0 != test_~tmp~5); 968#L724-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 967#L734 assume !(0 != test_~tmp___0~1); 965#L734-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 964#L744 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 956#L752-1 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 994#L870 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 991#L522 assume !(0 != ~pumpRunning~0); 989#L785 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 986#L817 assume !(0 != ~pumpRunning~0); 983#L792 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 982#L490 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 981#L533 assume 2 != __utac_acc__Specification5_spec__3_~tmp~3;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 980#L870-1 __utac_acc__Specification5_spec__3_#t~ret54 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret54;havoc __utac_acc__Specification5_spec__3_#t~ret54; 979#L537 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 863#L533-1 [2021-07-06 20:33:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:38,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:33:38,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:38,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738003599] [2021-07-06 20:33:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:38,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:38,166 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:38,219 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:38,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:33:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:38,235 INFO L82 PathProgramCache]: Analyzing trace with hash -594781890, now seen corresponding path program 1 times [2021-07-06 20:33:38,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:38,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032545359] [2021-07-06 20:33:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:38,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:38,244 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:38,248 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:38,250 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:33:38,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:33:38,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1036026620, now seen corresponding path program 1 times [2021-07-06 20:33:38,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:33:38,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167725992] [2021-07-06 20:33:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:33:38,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:33:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:38,287 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:33:38,315 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:33:38,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:33:38,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:33:38,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-07-06 20:34:20,943 WARN L205 SmtUtils]: Spent 42.49 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:34:20,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:21,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:34:42,348 WARN L205 SmtUtils]: Spent 21.32 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:34:42,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:34:42 BoogieIcfgContainer [2021-07-06 20:34:42,486 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:34:42,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:34:42,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:34:42,487 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:34:42,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:36" (3/4) ... [2021-07-06 20:34:42,490 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:34:42,557 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:34:42,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:34:42,570 INFO L168 Benchmark]: Toolchain (without parser) took 67224.13 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 41.9 MB in the beginning and 75.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:34:42,570 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:34:42,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.90 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 35.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:34:42,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.61 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 32.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:34:42,572 INFO L168 Benchmark]: Boogie Preprocessor took 51.28 ms. Allocated memory is still 62.9 MB. Free memory was 32.7 MB in the beginning and 30.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:34:42,572 INFO L168 Benchmark]: RCFGBuilder took 846.31 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 30.4 MB in the beginning and 36.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:34:42,581 INFO L168 Benchmark]: BuchiAutomizer took 65680.94 ms. Allocated memory was 81.8 MB in the beginning and 125.8 MB in the end (delta: 44.0 MB). Free memory was 36.2 MB in the beginning and 78.6 MB in the end (delta: -42.4 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. [2021-07-06 20:34:42,582 INFO L168 Benchmark]: Witness Printer took 82.11 ms. Allocated memory is still 125.8 MB. Free memory was 78.6 MB in the beginning and 75.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:34:42,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 62.9 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.90 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 35.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.61 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 32.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.28 ms. Allocated memory is still 62.9 MB. Free memory was 32.7 MB in the beginning and 30.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 846.31 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 30.4 MB in the beginning and 36.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 65680.94 ms. Allocated memory was 81.8 MB in the beginning and 125.8 MB in the end (delta: 44.0 MB). Free memory was 36.2 MB in the beginning and 78.6 MB in the end (delta: -42.4 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. * Witness Printer took 82.11 ms. Allocated memory is still 125.8 MB. Free memory was 78.6 MB in the beginning and 75.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 279 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 65.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 65.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 43.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 121 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 279 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 281 SDtfs, 458 SDslu, 422 SDs, 0 SdLazy, 92 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 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: 714]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b103a47=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c341883=0, NULL=0, NULL=44142, retValue_acc=0, NULL=0, NULL=44150, NULL=44146, methaneLevelCritical=0, NULL=44136, tmp=1, NULL=44147, tmp=0, NULL=0, NULL=0, NULL=44153, tmp___1=0, NULL=44141, NULL=0, NULL=0, NULL=44128, NULL=44138, NULL=25612, retValue_acc=0, cleanupTimeShifts=4, NULL=44134, switchedOnBeforeTS=0, NULL=44129, NULL=44127, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, NULL=0, NULL=44133, NULL=44132, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=44135, \result=0, NULL=44148, tmp=1, NULL=0, NULL=44152, NULL=0, NULL=0, NULL=0, NULL=0, NULL=44137, NULL=0, retValue_acc=1, NULL=0, NULL=0, NULL=44131, NULL=0, tmp___2=65, retValue_acc=1, NULL=44151, tmp___0=0, NULL=44140, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37d85f8f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d6446d5=0, NULL=44130, NULL=44149, NULL=44145, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f163950=65, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36678d0c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@151d164b=0, head=0, NULL=0, NULL=0, tmp=0, NULL=44139, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7300babe=0, NULL=44144, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d554e64=0, NULL=44143} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L506] int switchedOnBeforeTS ; [L602] int cleanupTimeShifts = 4; [L775] int pumpRunning = 0; [L776] int systemActive = 1; [L679] int retValue_acc ; [L680] int tmp ; [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); [L686] tmp = valid_product() [L688] COND TRUE \read(tmp) [L511] switchedOnBeforeTS = 0 [L705] int splverifierCounter ; [L706] int tmp ; [L707] int tmp___0 ; [L708] int tmp___1 ; [L709] int tmp___2 ; [L712] splverifierCounter = 0 Loop: [L714] COND TRUE 1 [L716] COND TRUE splverifierCounter < 4 [L722] tmp = __VERIFIER_nondet_int() [L724] COND FALSE !(\read(tmp)) [L732] tmp___0 = __VERIFIER_nondet_int() [L734] COND FALSE !(\read(tmp___0)) [L742] tmp___2 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___2) [L948] systemActive = 1 [L866] int retValue_acc ; [L869] retValue_acc = pumpRunning [L870] return (retValue_acc); [L520] switchedOnBeforeTS = isPumpRunning() [L785] COND FALSE !(\read(pumpRunning)) [L792] COND TRUE \read(systemActive) [L814] int tmp ; [L817] COND FALSE !(\read(pumpRunning)) [L526] int tmp ; [L527] int tmp___0 ; [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L531] tmp = getWaterLevel() [L533] COND TRUE tmp != 2 [L866] int retValue_acc ; [L869] retValue_acc = pumpRunning [L870] return (retValue_acc); [L535] tmp___0 = isPumpRunning() [L537] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:34:42,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...