./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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_spec2_product47.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 fed47f8471b5c81afa3edb58ddb4d4213a39ce3e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-20ed64e [2021-08-27 16:04:37,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:04:37,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:04:37,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:04:37,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:04:37,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:04:37,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:04:37,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:04:37,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:04:37,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:04:37,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:04:37,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:04:37,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:04:37,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:04:37,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:04:37,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:04:37,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:04:37,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:04:37,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:04:37,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:04:37,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:04:37,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:04:37,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:04:37,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:04:37,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:04:37,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:04:37,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:04:37,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:04:37,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:04:37,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:04:37,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:04:37,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:04:37,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:04:37,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:04:37,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:04:37,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:04:37,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:04:37,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:04:37,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:04:37,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:04:37,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:04:37,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:04:37,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:04:37,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:04:37,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:04:37,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:04:37,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:04:37,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:04:37,769 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:04:37,769 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:04:37,769 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:04:37,769 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:04:37,770 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:04:37,770 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:04:37,770 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:04:37,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:04:37,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:04:37,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:04:37,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:04:37,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:04:37,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:04:37,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:04:37,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:04:37,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:04:37,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:04:37,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:04:37,789 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:04:37,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:04:37,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:04:37,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:04:37,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:04:37,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:04:37,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:04:37,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:04:37,791 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:04:37,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fed47f8471b5c81afa3edb58ddb4d4213a39ce3e [2021-08-27 16:04:38,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:04:38,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:04:38,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:04:38,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:04:38,085 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:04:38,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c [2021-08-27 16:04:38,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d5deffb/3881758261f24da4805913e0efe76d49/FLAGb2e27b65e [2021-08-27 16:04:38,595 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:04:38,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c [2021-08-27 16:04:38,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d5deffb/3881758261f24da4805913e0efe76d49/FLAGb2e27b65e [2021-08-27 16:04:38,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d5deffb/3881758261f24da4805913e0efe76d49 [2021-08-27 16:04:38,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:04:38,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:04:38,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:38,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:04:38,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:04:38,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:38" (1/1) ... [2021-08-27 16:04:38,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd3727d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:38, skipping insertion in model container [2021-08-27 16:04:38,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:38" (1/1) ... [2021-08-27 16:04:38,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:04:38,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:04:38,818 WARN L228 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_spec2_product47.cil.c[1281,1294] [2021-08-27 16:04:38,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:38,946 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:04:38,955 WARN L228 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_spec2_product47.cil.c[1281,1294] [2021-08-27 16:04:39,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:39,042 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:04:39,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39 WrapperNode [2021-08-27 16:04:39,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:39,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:39,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:04:39,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:04:39,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:39,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:04:39,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:04:39,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:04:39,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:04:39,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:04:39,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:04:39,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:04:39,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (1/1) ... [2021-08-27 16:04:39,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:04:39,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:04:39,236 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) [2021-08-27 16:04:39,256 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 [2021-08-27 16:04:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:04:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:04:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:04:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:04:40,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:04:40,142 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-08-27 16:04:40,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:40 BoogieIcfgContainer [2021-08-27 16:04:40,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:04:40,146 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:04:40,146 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:04:40,149 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:04:40,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:40,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:04:38" (1/3) ... [2021-08-27 16:04:40,150 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e1feeff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:40, skipping insertion in model container [2021-08-27 16:04:40,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:40,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:39" (2/3) ... [2021-08-27 16:04:40,151 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e1feeff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:40, skipping insertion in model container [2021-08-27 16:04:40,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:40,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:40" (3/3) ... [2021-08-27 16:04:40,152 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2021-08-27 16:04:40,183 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:04:40,184 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:04:40,184 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:04:40,184 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:04:40,184 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:04:40,184 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:04:40,184 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:04:40,185 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:04:40,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5190839694656488) internal successors, (199), 131 states have internal predecessors, (199), 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) [2021-08-27 16:04:40,241 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:04:40,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:40,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:40,248 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:40,248 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:40,248 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:04:40,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5190839694656488) internal successors, (199), 131 states have internal predecessors, (199), 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) [2021-08-27 16:04:40,254 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:04:40,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:40,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:40,255 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:40,255 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:40,259 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 42#L-1true havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 64#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 114#L84true main_#t~ret45 := valid_product_#res;main_~tmp~4 := main_#t~ret45;havoc main_#t~ret45; 53#L584true assume 0 != main_~tmp~4; 48#L559true ~methAndRunningLastTime~0 := 0; 43#L463true havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 18#L474-1true [2021-08-27 16:04:40,259 INFO L793 eck$LassoCheckResult]: Loop: 18#L474-1true assume !false; 120#L920true assume test_~splverifierCounter~0 < 4; 103#L921true test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 70#L929true assume !(0 != test_~tmp~9); 111#L929-1true test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 132#L939true assume !(0 != test_~tmp___0~2); 25#L939-1true test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 44#L949true assume 0 != test_~tmp___2~0; 96#L955-1true assume !(0 != ~pumpRunning~0); 104#L706true assume !(0 != ~systemActive~0); 95#L713true havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~3, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~3;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 14#L645-3true __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~3 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 57#L474true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3);~methAndRunningLastTime~0 := 0; 18#L474-1true [2021-08-27 16:04:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:04:40,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:40,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798144725] [2021-08-27 16:04:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:40,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:40,499 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:40,628 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:40,631 INFO L82 PathProgramCache]: Analyzing trace with hash 13558355, now seen corresponding path program 1 times [2021-08-27 16:04:40,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:40,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886035289] [2021-08-27 16:04:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:40,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:40,642 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:40,662 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:40,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:40,665 INFO L82 PathProgramCache]: Analyzing trace with hash 846854861, now seen corresponding path program 1 times [2021-08-27 16:04:40,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:40,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475003802] [2021-08-27 16:04:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:40,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:40,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:40,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475003802] [2021-08-27 16:04:40,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475003802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:40,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:40,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:04:40,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033769933] [2021-08-27 16:04:40,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:04:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:04:40,959 INFO L87 Difference]: Start difference. First operand has 132 states, 131 states have (on average 1.5190839694656488) internal successors, (199), 131 states have internal predecessors, (199), 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) [2021-08-27 16:04:41,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:41,173 INFO L93 Difference]: Finished difference Result 310 states and 445 transitions. [2021-08-27 16:04:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:04:41,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 310 states and 445 transitions. [2021-08-27 16:04:41,186 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 199 [2021-08-27 16:04:41,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 310 states to 289 states and 424 transitions. [2021-08-27 16:04:41,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2021-08-27 16:04:41,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 289 [2021-08-27 16:04:41,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 289 states and 424 transitions. [2021-08-27 16:04:41,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:41,209 INFO L681 BuchiCegarLoop]: Abstraction has 289 states and 424 transitions. [2021-08-27 16:04:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states and 424 transitions. [2021-08-27 16:04:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 169. [2021-08-27 16:04:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 169 states have (on average 1.4615384615384615) internal successors, (247), 168 states have internal predecessors, (247), 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) [2021-08-27 16:04:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 247 transitions. [2021-08-27 16:04:41,253 INFO L704 BuchiCegarLoop]: Abstraction has 169 states and 247 transitions. [2021-08-27 16:04:41,253 INFO L587 BuchiCegarLoop]: Abstraction has 169 states and 247 transitions. [2021-08-27 16:04:41,253 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:04:41,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 169 states and 247 transitions. [2021-08-27 16:04:41,255 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 116 [2021-08-27 16:04:41,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:41,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:41,256 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:41,256 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:41,257 INFO L791 eck$LassoCheckResult]: Stem: 582#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 523#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 524#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 548#L84 main_#t~ret45 := valid_product_#res;main_~tmp~4 := main_#t~ret45;havoc main_#t~ret45; 535#L584 assume 0 != main_~tmp~4; 531#L559 ~methAndRunningLastTime~0 := 0; 525#L463 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 488#L474-1 [2021-08-27 16:04:41,257 INFO L793 eck$LassoCheckResult]: Loop: 488#L474-1 assume !false; 489#L920 assume test_~splverifierCounter~0 < 4; 576#L921 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 554#L929 assume !(0 != test_~tmp~9); 537#L929-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 580#L939 assume !(0 != test_~tmp___0~2); 499#L939-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 500#L949 assume 0 != test_~tmp___2~0; 527#L955-1 assume !(0 != ~pumpRunning~0); 551#L706 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 577#L764 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret56, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 516#L738-1 assume !(0 == ~pumpRunning~0); 469#L713 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~3, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~3;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 482#L645-3 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~3 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 483#L474 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3);~methAndRunningLastTime~0 := 0; 488#L474-1 [2021-08-27 16:04:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:41,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:04:41,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:41,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218037569] [2021-08-27 16:04:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:41,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,314 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,372 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:41,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1359357845, now seen corresponding path program 1 times [2021-08-27 16:04:41,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:41,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434197039] [2021-08-27 16:04:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:41,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:41,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:41,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434197039] [2021-08-27 16:04:41,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434197039] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:41,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:41,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:41,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630980933] [2021-08-27 16:04:41,399 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:41,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:41,400 INFO L87 Difference]: Start difference. First operand 169 states and 247 transitions. cyclomatic complexity: 81 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) [2021-08-27 16:04:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:41,478 INFO L93 Difference]: Finished difference Result 211 states and 293 transitions. [2021-08-27 16:04:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:41,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211 states and 293 transitions. [2021-08-27 16:04:41,480 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-08-27 16:04:41,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211 states to 211 states and 293 transitions. [2021-08-27 16:04:41,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 211 [2021-08-27 16:04:41,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2021-08-27 16:04:41,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 211 states and 293 transitions. [2021-08-27 16:04:41,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:41,484 INFO L681 BuchiCegarLoop]: Abstraction has 211 states and 293 transitions. [2021-08-27 16:04:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states and 293 transitions. [2021-08-27 16:04:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-08-27 16:04:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 211 states have (on average 1.3886255924170616) internal successors, (293), 210 states have internal predecessors, (293), 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) [2021-08-27 16:04:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 293 transitions. [2021-08-27 16:04:41,505 INFO L704 BuchiCegarLoop]: Abstraction has 211 states and 293 transitions. [2021-08-27 16:04:41,505 INFO L587 BuchiCegarLoop]: Abstraction has 211 states and 293 transitions. [2021-08-27 16:04:41,505 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:04:41,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 293 transitions. [2021-08-27 16:04:41,506 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-08-27 16:04:41,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:41,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:41,507 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:41,507 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] [2021-08-27 16:04:41,507 INFO L791 eck$LassoCheckResult]: Stem: 981#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 914#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 915#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 940#L84 main_#t~ret45 := valid_product_#res;main_~tmp~4 := main_#t~ret45;havoc main_#t~ret45; 927#L584 assume 0 != main_~tmp~4; 922#L559 ~methAndRunningLastTime~0 := 0; 916#L463 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 875#L474-1 [2021-08-27 16:04:41,507 INFO L793 eck$LassoCheckResult]: Loop: 875#L474-1 assume !false; 876#L920 assume test_~splverifierCounter~0 < 4; 973#L921 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 946#L929 assume !(0 != test_~tmp~9); 929#L929-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 978#L939 assume !(0 != test_~tmp___0~2); 888#L939-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 889#L949 assume 0 != test_~tmp___2~0; 918#L955-1 assume !(0 != ~pumpRunning~0); 969#L706 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 974#L764 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret56, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 906#L738-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 907#L685-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 866#L690-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 867#L883-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 896#L883-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 850#L889-1 processEnvironment__wrappee__methaneQuery_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret56;havoc processEnvironment__wrappee__methaneQuery_#t~ret56; 851#L742-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 855#L713 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~3, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~3;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 868#L645-3 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~3 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 869#L474 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3);~methAndRunningLastTime~0 := 0; 875#L474-1 [2021-08-27 16:04:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:41,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:04:41,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:41,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133593308] [2021-08-27 16:04:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:41,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,551 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,595 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:41,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1072211743, now seen corresponding path program 1 times [2021-08-27 16:04:41,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:41,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636429008] [2021-08-27 16:04:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:41,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,603 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,622 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:41,623 INFO L82 PathProgramCache]: Analyzing trace with hash 700929883, now seen corresponding path program 1 times [2021-08-27 16:04:41,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:41,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349124033] [2021-08-27 16:04:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:41,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,666 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:41,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:23,875 WARN L207 SmtUtils]: Spent 41.93 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:06:06,555 WARN L207 SmtUtils]: Spent 20.46 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:06:06,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:06:06 BoogieIcfgContainer [2021-08-27 16:06:06,711 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:06:06,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:06:06,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:06:06,717 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:06:06,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:40" (3/4) ... [2021-08-27 16:06:06,718 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:06:06,755 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:06:06,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:06:06,756 INFO L168 Benchmark]: Toolchain (without parser) took 88120.81 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 59.4 MB in the beginning and 64.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:06,757 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 75.5 MB. Free memory was 57.9 MB in the beginning and 57.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:06:06,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.10 ms. Allocated memory is still 75.5 MB. Free memory was 59.0 MB in the beginning and 40.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:06,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.98 ms. Allocated memory is still 75.5 MB. Free memory was 40.6 MB in the beginning and 36.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:06,758 INFO L168 Benchmark]: Boogie Preprocessor took 67.76 ms. Allocated memory is still 75.5 MB. Free memory was 36.8 MB in the beginning and 34.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:06,759 INFO L168 Benchmark]: RCFGBuilder took 932.50 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 58.2 MB in the beginning and 61.6 MB in the end (delta: -3.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:06,759 INFO L168 Benchmark]: BuchiAutomizer took 86565.12 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 67.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:06,759 INFO L168 Benchmark]: Witness Printer took 39.40 ms. Allocated memory is still 111.1 MB. Free memory was 67.3 MB in the beginning and 64.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:06,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 75.5 MB. Free memory was 57.9 MB in the beginning and 57.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 407.10 ms. Allocated memory is still 75.5 MB. Free memory was 59.0 MB in the beginning and 40.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.98 ms. Allocated memory is still 75.5 MB. Free memory was 40.6 MB in the beginning and 36.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.76 ms. Allocated memory is still 75.5 MB. Free memory was 36.8 MB in the beginning and 34.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.50 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 58.2 MB in the beginning and 61.6 MB in the end (delta: -3.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 86565.12 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.6 MB in the beginning and 67.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. * Witness Printer took 39.40 ms. Allocated memory is still 111.1 MB. Free memory was 67.3 MB in the beginning and 64.4 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 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 6 locations. The remainder module has 211 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 86.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 86.0s. Construction of modules took 0.1s. 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 54.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 120 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 211 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 354 SDtfs, 1034 SDslu, 803 SDs, 0 SdLazy, 69 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166.9ms 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: 919]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11354} State at position 1 is {NULL=0, NULL=11372, NULL=0, NULL=11354, NULL=11358, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@453cfebd=0, NULL=0, tmp___1=0, tmp=0, NULL=11356, NULL=0, NULL=11363, NULL=11368, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d275f7f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68c72625=0, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=0, NULL=0, \result=1, NULL=11376, NULL=0, retValue_acc=0, NULL=11379, NULL=0, tmp=1, NULL=0, tmp___0=0, NULL=11380, NULL=11367, methAndRunningLastTime=0, NULL=11360, head=0, NULL=0, NULL=0, tmp=0, NULL=11375, NULL=0, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8f850fa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e44da8e=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=11361, NULL=11366, NULL=11373, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f88dd36=0, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=11382, NULL=11355, NULL=11362, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59e9d4a1=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@100da11d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1cd74396=0, NULL=0, NULL=0, systemActive=1, NULL=11359, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20ea5222=0, retValue_acc=0, \result=0, NULL=11371, NULL=0, NULL=0, NULL=11369, NULL=11364, \result=0, NULL=0, NULL=11357, tmp___0=0, NULL=11381, NULL=11370, retValue_acc=1, tmp___2=64, splverifierCounter=0, NULL=0, \result=0, NULL=11374, NULL=11377, tmp=0, NULL=11365, NULL=11378} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L258] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L457] int methAndRunningLastTime ; [L496] int cleanupTimeShifts = 4; [L602] int waterLevel = 1; [L603] int methaneLevelCritical = 0; [L699] int pumpRunning = 0; [L700] int systemActive = 1; [L575] int retValue_acc ; [L576] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L582] tmp = valid_product() [L584] COND TRUE \read(tmp) [L462] methAndRunningLastTime = 0 [L910] int splverifierCounter ; [L911] int tmp ; [L912] int tmp___0 ; [L913] int tmp___1 ; [L914] int tmp___2 ; [L917] splverifierCounter = 0 Loop: [L919] COND TRUE 1 [L921] COND TRUE splverifierCounter < 4 [L927] tmp = __VERIFIER_nondet_int() [L929] COND FALSE !(\read(tmp)) [L937] tmp___0 = __VERIFIER_nondet_int() [L939] COND FALSE !(\read(tmp___0)) [L947] tmp___2 = __VERIFIER_nondet_int() [L949] COND TRUE \read(tmp___2) [L706] COND FALSE !(\read(pumpRunning)) [L713] COND TRUE \read(systemActive) [L761] int tmp ; [L764] COND FALSE !(\read(pumpRunning)) [L735] int tmp ; [L738] COND TRUE ! pumpRunning [L875] int retValue_acc ; [L876] int tmp ; [L877] int tmp___0 ; [L682] int retValue_acc ; [L685] COND TRUE waterLevel < 2 [L686] retValue_acc = 1 [L687] return (retValue_acc); [L881] tmp = isHighWaterSensorDry() [L883] COND TRUE \read(tmp) [L884] tmp___0 = 0 [L888] retValue_acc = tmp___0 [L889] return (retValue_acc); [L740] tmp = isHighWaterLevel() [L742] COND FALSE !(\read(tmp)) [L467] int tmp ; [L468] int tmp___0 ; [L641] int retValue_acc ; [L644] retValue_acc = methaneLevelCritical [L645] return (retValue_acc); [L472] tmp = isMethaneLevelCritical() [L474] COND FALSE !(\read(tmp)) [L490] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:06:06,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...