./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product60.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_spec5_product60.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 35fb3393fa21a73dc044cf8f864a9671eb135aae ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:26:35,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:26:35,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:26:35,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:26:35,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:26:35,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:26:35,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:26:35,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:26:35,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:26:35,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:26:35,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:26:35,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:26:35,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:26:35,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:26:35,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:26:35,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:26:35,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:26:35,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:26:35,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:26:35,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:26:35,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:26:35,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:26:35,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:26:35,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:26:35,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:26:35,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:26:35,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:26:35,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:26:35,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:26:35,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:26:35,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:26:35,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:26:35,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:26:35,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:26:35,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:26:35,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:26:35,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:26:35,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:26:35,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:26:35,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:26:35,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:26:35,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:26:35,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:26:35,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:26:35,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:26:35,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:26:35,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:26:35,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:26:35,790 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:26:35,790 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:26:35,790 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:26:35,790 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:26:35,791 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:26:35,791 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:26:35,791 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:26:35,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:26:35,792 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:26:35,792 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:26:35,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:26:35,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:26:35,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:26:35,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:26:35,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:26:35,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:26:35,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:26:35,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:26:35,808 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:26:35,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:26:35,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:26:35,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:26:35,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:26:35,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:26:35,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:26:35,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:26:35,809 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:26:35,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35fb3393fa21a73dc044cf8f864a9671eb135aae [2021-08-27 16:26:36,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:26:36,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:26:36,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:26:36,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:26:36,146 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:26:36,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product60.cil.c [2021-08-27 16:26:36,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dd173e2/5a1520065c9444c8bd24fa2cacf48e0a/FLAG836994a01 [2021-08-27 16:26:36,698 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:26:36,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product60.cil.c [2021-08-27 16:26:36,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dd173e2/5a1520065c9444c8bd24fa2cacf48e0a/FLAG836994a01 [2021-08-27 16:26:37,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dd173e2/5a1520065c9444c8bd24fa2cacf48e0a [2021-08-27 16:26:37,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:26:37,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:26:37,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:37,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:26:37,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:26:37,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60180132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37, skipping insertion in model container [2021-08-27 16:26:37,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:26:37,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:26:37,557 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_spec5_product60.cil.c[17751,17764] [2021-08-27 16:26:37,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:37,584 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:26:37,656 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_spec5_product60.cil.c[17751,17764] [2021-08-27 16:26:37,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:37,682 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:26:37,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37 WrapperNode [2021-08-27 16:26:37,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:37,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:37,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:26:37,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:26:37,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:37,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:26:37,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:26:37,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:26:37,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:26:37,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:26:37,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:26:37,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:26:37,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (1/1) ... [2021-08-27 16:26:37,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:26:37,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:26:37,845 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 16:26:37,849 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 16:26:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:26:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:26:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:26:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:26:38,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:26:38,658 INFO L299 CfgBuilder]: Removed 212 assume(true) statements. [2021-08-27 16:26:38,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:38 BoogieIcfgContainer [2021-08-27 16:26:38,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:26:38,661 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:26:38,661 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:26:38,664 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:26:38,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:38,665 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:26:37" (1/3) ... [2021-08-27 16:26:38,665 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ad0ad73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:38, skipping insertion in model container [2021-08-27 16:26:38,665 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:38,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:37" (2/3) ... [2021-08-27 16:26:38,666 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ad0ad73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:38, skipping insertion in model container [2021-08-27 16:26:38,666 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:38,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:38" (3/3) ... [2021-08-27 16:26:38,667 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2021-08-27 16:26:38,705 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:26:38,705 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:26:38,705 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:26:38,705 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:26:38,706 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:26:38,706 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:26:38,706 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:26:38,706 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:26:38,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 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 16:26:38,744 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-08-27 16:26:38,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:38,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:38,750 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:38,751 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:38,751 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:26:38,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 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 16:26:38,758 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-08-27 16:26:38,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:38,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:38,759 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:38,760 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:38,771 INFO L791 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 47#L-1true havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~7, main_~tmp~10;havoc main_~retValue_acc~7;havoc main_~tmp~10; 79#L908true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 123#L916true main_#t~ret71 := valid_product_#res;main_~tmp~10 := main_#t~ret71;havoc main_#t~ret71; 90#L872true assume 0 != main_~tmp~10; 124#L845true ~switchedOnBeforeTS~0 := 0; 139#L377true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 35#L398-1true [2021-08-27 16:26:38,772 INFO L793 eck$LassoCheckResult]: Loop: 35#L398-1true assume !false; 56#L311true assume test_~splverifierCounter~0 < 4; 136#L312true test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 91#L320true assume !(0 != test_~tmp~5); 31#L320-1true test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 57#L330true assume !(0 != test_~tmp___0~2); 13#L330-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 114#L340true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 101#L348-1true havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 116#L195true __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 60#L387true assume !(0 != ~pumpRunning~0); 41#L66true assume !(0 != ~systemActive~0); 107#L73true havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 58#L1005true __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 122#L398true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 35#L398-1true [2021-08-27 16:26:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:38,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:26:38,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:38,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157219543] [2021-08-27 16:26:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:38,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:38,988 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:39,127 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash 677719542, now seen corresponding path program 1 times [2021-08-27 16:26:39,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:39,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864481851] [2021-08-27 16:26:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:39,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:39,188 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 16:26:39,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:39,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864481851] [2021-08-27 16:26:39,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864481851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:39,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:39,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:26:39,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873611316] [2021-08-27 16:26:39,194 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:39,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:39,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:26:39,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:26:39,207 INFO L87 Difference]: Start difference. First operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 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) [2021-08-27 16:26:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:39,286 INFO L93 Difference]: Finished difference Result 279 states and 401 transitions. [2021-08-27 16:26:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:26:39,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 279 states and 401 transitions. [2021-08-27 16:26:39,298 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 182 [2021-08-27 16:26:39,314 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 279 states to 265 states and 386 transitions. [2021-08-27 16:26:39,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 265 [2021-08-27 16:26:39,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 265 [2021-08-27 16:26:39,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 265 states and 386 transitions. [2021-08-27 16:26:39,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:39,322 INFO L681 BuchiCegarLoop]: Abstraction has 265 states and 386 transitions. [2021-08-27 16:26:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states and 386 transitions. [2021-08-27 16:26:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2021-08-27 16:26:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 263 states have (on average 1.456273764258555) internal successors, (383), 262 states have internal predecessors, (383), 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 16:26:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 383 transitions. [2021-08-27 16:26:39,375 INFO L704 BuchiCegarLoop]: Abstraction has 263 states and 383 transitions. [2021-08-27 16:26:39,375 INFO L587 BuchiCegarLoop]: Abstraction has 263 states and 383 transitions. [2021-08-27 16:26:39,375 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:26:39,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 263 states and 383 transitions. [2021-08-27 16:26:39,384 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 180 [2021-08-27 16:26:39,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:39,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:39,385 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:39,385 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:39,385 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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 505#L-1 havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~7, main_~tmp~10;havoc main_~retValue_acc~7;havoc main_~tmp~10; 506#L908 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 544#L916 main_#t~ret71 := valid_product_#res;main_~tmp~10 := main_#t~ret71;havoc main_#t~ret71; 555#L872 assume 0 != main_~tmp~10; 556#L845 ~switchedOnBeforeTS~0 := 0; 580#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 487#L398-1 [2021-08-27 16:26:39,385 INFO L793 eck$LassoCheckResult]: Loop: 487#L398-1 assume !false; 488#L311 assume test_~splverifierCounter~0 < 4; 520#L312 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 611#L320 assume !(0 != test_~tmp~5); 609#L320-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 608#L330 assume !(0 != test_~tmp___0~2); 606#L330-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 572#L340 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 574#L348-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 575#L195 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 525#L387 assume !(0 != ~pumpRunning~0); 495#L66 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 496#L124 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 620#L98-1 assume !(0 == ~pumpRunning~0); 612#L73 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 602#L1005 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 579#L398 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 487#L398-1 [2021-08-27 16:26:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:39,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:26:39,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:39,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731255526] [2021-08-27 16:26:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:39,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:39,422 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:39,487 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:39,492 INFO L82 PathProgramCache]: Analyzing trace with hash -532272225, now seen corresponding path program 1 times [2021-08-27 16:26:39,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:39,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253227401] [2021-08-27 16:26:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:39,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:39,519 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 16:26:39,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:39,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253227401] [2021-08-27 16:26:39,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253227401] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:39,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:39,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:26:39,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654914669] [2021-08-27 16:26:39,521 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:39,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:26:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:26:39,522 INFO L87 Difference]: Start difference. First operand 263 states and 383 transitions. cyclomatic complexity: 123 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:39,640 INFO L93 Difference]: Finished difference Result 362 states and 505 transitions. [2021-08-27 16:26:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:26:39,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 362 states and 505 transitions. [2021-08-27 16:26:39,645 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-08-27 16:26:39,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 362 states to 362 states and 505 transitions. [2021-08-27 16:26:39,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 362 [2021-08-27 16:26:39,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 362 [2021-08-27 16:26:39,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 362 states and 505 transitions. [2021-08-27 16:26:39,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:39,649 INFO L681 BuchiCegarLoop]: Abstraction has 362 states and 505 transitions. [2021-08-27 16:26:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states and 505 transitions. [2021-08-27 16:26:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-08-27 16:26:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 362 states have (on average 1.3950276243093922) internal successors, (505), 361 states have internal predecessors, (505), 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 16:26:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 505 transitions. [2021-08-27 16:26:39,657 INFO L704 BuchiCegarLoop]: Abstraction has 362 states and 505 transitions. [2021-08-27 16:26:39,657 INFO L587 BuchiCegarLoop]: Abstraction has 362 states and 505 transitions. [2021-08-27 16:26:39,658 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:26:39,658 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 362 states and 505 transitions. [2021-08-27 16:26:39,660 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-08-27 16:26:39,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:39,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:39,661 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:39,661 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:39,661 INFO L791 eck$LassoCheckResult]: Stem: 1223#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1138#L-1 havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~7, main_~tmp~10;havoc main_~retValue_acc~7;havoc main_~tmp~10; 1139#L908 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1181#L916 main_#t~ret71 := valid_product_#res;main_~tmp~10 := main_#t~ret71;havoc main_#t~ret71; 1191#L872 assume 0 != main_~tmp~10; 1192#L845 ~switchedOnBeforeTS~0 := 0; 1220#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1229#L398-1 [2021-08-27 16:26:39,661 INFO L793 eck$LassoCheckResult]: Loop: 1229#L398-1 assume !false; 1318#L311 assume test_~splverifierCounter~0 < 4; 1317#L312 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1316#L320 assume !(0 != test_~tmp~5); 1115#L320-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 1116#L330 assume !(0 != test_~tmp___0~2); 1081#L330-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1082#L340 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1237#L348-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1308#L195 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 1162#L387 assume !(0 != ~pumpRunning~0); 1129#L66 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1130#L124 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1187#L98-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1224#L1013-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1225#L1018-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1298#L244-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 1297#L244-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1296#L250-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1295#L102-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1279#L73 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 1323#L1005 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 1321#L398 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 1229#L398-1 [2021-08-27 16:26:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:39,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:26:39,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:39,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117623328] [2021-08-27 16:26:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:39,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:39,690 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:39,745 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1637117461, now seen corresponding path program 1 times [2021-08-27 16:26:39,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:39,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182105464] [2021-08-27 16:26:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:39,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:39,786 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 16:26:39,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:39,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182105464] [2021-08-27 16:26:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182105464] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:39,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:39,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:26:39,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900072455] [2021-08-27 16:26:39,788 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:39,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:26:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:26:39,788 INFO L87 Difference]: Start difference. First operand 362 states and 505 transitions. cyclomatic complexity: 146 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:39,964 INFO L93 Difference]: Finished difference Result 1022 states and 1397 transitions. [2021-08-27 16:26:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:26:39,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1022 states and 1397 transitions. [2021-08-27 16:26:39,975 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 671 [2021-08-27 16:26:39,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1022 states to 1022 states and 1397 transitions. [2021-08-27 16:26:39,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1022 [2021-08-27 16:26:39,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1022 [2021-08-27 16:26:39,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1022 states and 1397 transitions. [2021-08-27 16:26:39,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:39,989 INFO L681 BuchiCegarLoop]: Abstraction has 1022 states and 1397 transitions. [2021-08-27 16:26:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states and 1397 transitions. [2021-08-27 16:26:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 717. [2021-08-27 16:26:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 717 states have (on average 1.3598326359832635) internal successors, (975), 716 states have internal predecessors, (975), 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 16:26:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 975 transitions. [2021-08-27 16:26:40,011 INFO L704 BuchiCegarLoop]: Abstraction has 717 states and 975 transitions. [2021-08-27 16:26:40,011 INFO L587 BuchiCegarLoop]: Abstraction has 717 states and 975 transitions. [2021-08-27 16:26:40,011 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:26:40,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 717 states and 975 transitions. [2021-08-27 16:26:40,015 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 510 [2021-08-27 16:26:40,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:40,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:40,018 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:40,018 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:40,018 INFO L791 eck$LassoCheckResult]: Stem: 2608#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2537#L-1 havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~7, main_~tmp~10;havoc main_~retValue_acc~7;havoc main_~tmp~10; 2538#L908 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 2576#L916 main_#t~ret71 := valid_product_#res;main_~tmp~10 := main_#t~ret71;havoc main_#t~ret71; 2584#L872 assume 0 != main_~tmp~10; 2585#L845 ~switchedOnBeforeTS~0 := 0; 2606#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2520#L398-1 [2021-08-27 16:26:40,018 INFO L793 eck$LassoCheckResult]: Loop: 2520#L398-1 assume !false; 2521#L311 assume test_~splverifierCounter~0 < 4; 2553#L312 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 2586#L320 assume !(0 != test_~tmp~5); 2587#L320-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 2860#L330 assume !(0 != test_~tmp___0~2); 2858#L330-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 2857#L340 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2602#L348-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2855#L195 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 2797#L387 assume !(0 != ~pumpRunning~0); 2794#L66 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2791#L124 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2771#L98-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 2730#L1013-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 2728#L1018-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 2726#L244-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 2724#L244-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2722#L250-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2720#L102-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2595#L73 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 2554#L1005 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 2555#L398 assume 2 != __utac_acc__Specification5_spec__3_~tmp~6;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2556#L195-1 __utac_acc__Specification5_spec__3_#t~ret35 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret35;havoc __utac_acc__Specification5_spec__3_#t~ret35; 2557#L402 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 2520#L398-1 [2021-08-27 16:26:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:40,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:26:40,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:40,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247532803] [2021-08-27 16:26:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:40,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:40,081 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:40,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1311860826, now seen corresponding path program 1 times [2021-08-27 16:26:40,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:40,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77687067] [2021-08-27 16:26:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:40,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:40,119 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:40,126 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:40,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1375287008, now seen corresponding path program 1 times [2021-08-27 16:26:40,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:40,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063727276] [2021-08-27 16:26:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:40,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:40,152 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:40,184 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:20,210 WARN L207 SmtUtils]: Spent 39.67 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:28:00,241 WARN L207 SmtUtils]: Spent 19.55 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:28:00,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:28:00 BoogieIcfgContainer [2021-08-27 16:28:00,383 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:28:00,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:28:00,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:28:00,384 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:28:00,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:38" (3/4) ... [2021-08-27 16:28:00,387 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:28:00,431 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:28:00,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:28:00,432 INFO L168 Benchmark]: Toolchain (without parser) took 83242.39 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 56.8 MB in the beginning and 45.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:00,433 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:28:00,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.78 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 48.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:00,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.12 ms. Allocated memory is still 73.4 MB. Free memory was 48.8 MB in the beginning and 44.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:00,434 INFO L168 Benchmark]: Boogie Preprocessor took 61.62 ms. Allocated memory is still 73.4 MB. Free memory was 44.6 MB in the beginning and 41.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:00,434 INFO L168 Benchmark]: RCFGBuilder took 835.54 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:00,435 INFO L168 Benchmark]: BuchiAutomizer took 81721.72 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 39.3 MB in the beginning and 48.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:00,435 INFO L168 Benchmark]: Witness Printer took 48.25 ms. Allocated memory is still 107.0 MB. Free memory was 48.7 MB in the beginning and 45.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:00,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 492.78 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 48.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.12 ms. Allocated memory is still 73.4 MB. Free memory was 48.8 MB in the beginning and 44.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.62 ms. Allocated memory is still 73.4 MB. Free memory was 44.6 MB in the beginning and 41.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 835.54 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81721.72 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 39.3 MB in the beginning and 48.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * Witness Printer took 48.25 ms. Allocated memory is still 107.0 MB. Free memory was 48.7 MB in the beginning and 45.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 717 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 81.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 72.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 307 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 717 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 679 SDtfs, 1007 SDslu, 911 SDs, 0 SdLazy, 145 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 310]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=5775} State at position 1 is {retValue_acc=1, NULL=0, NULL=0, NULL=5800, NULL=0, NULL=5775, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@298d275a=0, NULL=5796, methaneLevelCritical=0, NULL=5778, NULL=0, tmp=0, NULL=0, retValue_acc=0, NULL=5779, NULL=0, tmp___1=0, NULL=0, NULL=5795, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e44ff49=0, NULL=5787, tmp=1, waterLevel=1, NULL=5798, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7813a185=0, \result=1, head=0, pumpRunning=0, NULL=5803, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@775f9dc6=0, NULL=5776, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5393bf52=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e800c94=81, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3af8179e=0, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@219504e9=0, NULL=0, tmp___0=0, NULL=5791, NULL=5799, NULL=5801, tmp=0, head=0, NULL=0, NULL=5793, NULL=5797, retValue_acc=0, NULL=5792, tmp=1, NULL=0, tmp___0=0, NULL=0, NULL=5777, NULL=0, NULL=0, tmp=0, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, \result=1, NULL=5802, NULL=0, NULL=5782, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=5783, NULL=5785, \result=0, tmp___0=0, NULL=5781, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58310367=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e3e031=0, NULL=0, NULL=5780, retValue_acc=1, NULL=5794, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@573f652d=0, NULL=5784, retValue_acc=1, tmp___2=81, splverifierCounter=0, NULL=0, NULL=0, NULL=5786, retValue_acc=0, NULL=0, NULL=0, NULL=5789, NULL=0, NULL=5790, NULL=5788} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L54] int pumpRunning = 0; [L55] int systemActive = 1; [L371] int switchedOnBeforeTS ; [L589] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L786] int cleanupTimeShifts = 4; [L930] int waterLevel = 1; [L931] int methaneLevelCritical = 0; [L863] int retValue_acc ; [L864] int tmp ; [L912] int retValue_acc ; [L915] retValue_acc = 1 [L916] return (retValue_acc); [L870] tmp = valid_product() [L872] COND TRUE \read(tmp) [L376] switchedOnBeforeTS = 0 [L301] int splverifierCounter ; [L302] int tmp ; [L303] int tmp___0 ; [L304] int tmp___1 ; [L305] int tmp___2 ; [L308] splverifierCounter = 0 Loop: [L310] COND TRUE 1 [L312] COND TRUE splverifierCounter < 4 [L318] tmp = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp)) [L328] tmp___0 = __VERIFIER_nondet_int() [L330] COND FALSE !(\read(tmp___0)) [L338] tmp___2 = __VERIFIER_nondet_int() [L340] COND TRUE \read(tmp___2) [L292] systemActive = 1 [L191] int retValue_acc ; [L194] retValue_acc = pumpRunning [L195] return (retValue_acc); [L385] switchedOnBeforeTS = isPumpRunning() [L66] COND FALSE !(\read(pumpRunning)) [L73] COND TRUE \read(systemActive) [L121] int tmp ; [L124] COND FALSE !(\read(pumpRunning)) [L95] int tmp ; [L98] COND TRUE ! pumpRunning [L236] int retValue_acc ; [L237] int tmp ; [L238] int tmp___0 ; [L1010] int retValue_acc ; [L1013] COND TRUE waterLevel < 2 [L1014] retValue_acc = 1 [L1015] return (retValue_acc); [L242] tmp = isHighWaterSensorDry() [L244] COND TRUE \read(tmp) [L245] tmp___0 = 0 [L249] retValue_acc = tmp___0 [L250] return (retValue_acc); [L100] tmp = isHighWaterLevel() [L102] COND FALSE !(\read(tmp)) [L391] int tmp ; [L392] int tmp___0 ; [L1001] int retValue_acc ; [L1004] retValue_acc = waterLevel [L1005] return (retValue_acc); [L396] tmp = getWaterLevel() [L398] COND TRUE tmp != 2 [L191] int retValue_acc ; [L194] retValue_acc = pumpRunning [L195] return (retValue_acc); [L400] tmp___0 = isPumpRunning() [L402] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:28:00,492 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...