./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product35.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 6dd4e2379545062b6cfdf03e26feb426fb16a9fa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:34:50,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:34:50,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:34:50,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:34:50,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:34:50,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:34:50,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:34:50,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:34:50,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:34:50,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:34:50,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:34:50,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:34:50,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:34:50,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:34:50,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:34:50,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:34:50,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:34:50,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:34:50,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:34:50,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:34:50,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:34:50,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:34:50,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:34:50,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:34:50,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:34:50,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:34:50,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:34:50,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:34:50,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:34:50,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:34:50,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:34:50,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:34:50,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:34:50,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:34:50,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:34:50,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:34:50,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:34:50,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:34:50,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:34:50,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:34:50,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:34:50,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:34:50,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:34:50,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:34:50,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:34:50,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:34:50,681 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:34:50,682 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:34:50,682 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:34:50,683 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:34:50,683 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:34:50,683 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:34:50,684 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:34:50,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:34:50,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:34:50,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:34:50,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:34:50,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:34:50,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:34:50,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:34:50,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:34:50,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:34:50,685 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:34:50,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:34:50,686 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:34:50,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:34:50,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:34:50,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:34:50,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:34:50,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:34:50,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:34:50,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:34:50,688 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:34:50,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dd4e2379545062b6cfdf03e26feb426fb16a9fa [2021-07-06 20:34:50,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:34:50,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:34:50,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:34:50,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:34:50,947 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:34:50,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2021-07-06 20:34:50,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fbaec68/a1f7fd174b17480d896e52cecb2bf913/FLAG14ff4b324 [2021-07-06 20:34:51,430 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:34:51,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2021-07-06 20:34:51,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fbaec68/a1f7fd174b17480d896e52cecb2bf913/FLAG14ff4b324 [2021-07-06 20:34:51,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fbaec68/a1f7fd174b17480d896e52cecb2bf913 [2021-07-06 20:34:51,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:34:51,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:34:51,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:34:51,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:34:51,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:34:51,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31566961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51, skipping insertion in model container [2021-07-06 20:34:51,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:34:51,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:34:51,598 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1281,1294] [2021-07-06 20:34:51,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:34:51,687 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:34:51,695 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1281,1294] [2021-07-06 20:34:51,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:34:51,759 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:34:51,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51 WrapperNode [2021-07-06 20:34:51,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:34:51,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:34:51,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:34:51,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:34:51,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:34:51,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:34:51,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:34:51,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:34:51,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:34:51,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:34:51,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:34:51,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:34:51,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (1/1) ... [2021-07-06 20:34:51,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:34:51,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:34:51,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:34:51,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:34:51,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:34:51,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:34:51,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:34:51,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:34:52,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:34:52,554 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-07-06 20:34:52,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:34:52 BoogieIcfgContainer [2021-07-06 20:34:52,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:34:52,556 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:34:52,556 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:34:52,558 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:34:52,558 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:34:52,558 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:34:51" (1/3) ... [2021-07-06 20:34:52,559 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24055dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:34:52, skipping insertion in model container [2021-07-06 20:34:52,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:34:52,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:51" (2/3) ... [2021-07-06 20:34:52,559 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24055dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:34:52, skipping insertion in model container [2021-07-06 20:34:52,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:34:52,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:34:52" (3/3) ... [2021-07-06 20:34:52,562 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2021-07-06 20:34:52,595 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:34:52,595 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:34:52,595 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:34:52,596 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:34:52,596 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:34:52,596 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:34:52,596 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:34:52,596 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:34:52,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:52,634 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-07-06 20:34:52,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:52,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:52,639 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:52,640 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:52,640 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:34:52,641 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:52,650 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-07-06 20:34:52,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:52,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:52,651 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:52,651 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:52,657 INFO L791 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 13#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 28#L545true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 34#L553true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 20#L143true assume 0 != main_~tmp~0; 29#L114true ~switchedOnBeforeTS~0 := 0; 12#L906true havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 57#L927-1true [2021-07-06 20:34:52,658 INFO L793 eck$LassoCheckResult]: Loop: 57#L927-1true assume !false; 19#L570true assume test_~splverifierCounter~0 < 4; 43#L571true test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 47#L579true assume !(0 != test_~tmp~4); 49#L579-1true test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 23#L589true assume !(0 != test_~tmp___0~0); 27#L589-1true test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 8#L599true assume 0 != test_~tmp___2~0; 63#L605-1true havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 68#L825true __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 54#L916true assume !(0 != ~pumpRunning~0); 46#L740true assume !(0 != ~systemActive~0); 51#L747true havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 24#L706true __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 78#L927true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 57#L927-1true [2021-07-06 20:34:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:52,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:34:52,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:52,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625629591] [2021-07-06 20:34:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:52,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:52,829 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:52,907 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:52,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash -241799531, now seen corresponding path program 1 times [2021-07-06 20:34:52,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:52,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472640339] [2021-07-06 20:34:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:52,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:52,955 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:52,966 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:52,969 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1692225679, now seen corresponding path program 1 times [2021-07-06 20:34:52,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:52,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219849292] [2021-07-06 20:34:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:52,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:34:53,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:53,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:53,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:53,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:34:53,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:34:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:34:53,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:34:53,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219849292] [2021-07-06 20:34:53,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219849292] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:34:53,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:34:53,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:34:53,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927316575] [2021-07-06 20:34:53,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-07-06 20:34:53,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:34:53,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:34:53,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:34:53,185 INFO L87 Difference]: Start difference. First operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:34:53,327 INFO L93 Difference]: Finished difference Result 223 states and 310 transitions. [2021-07-06 20:34:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:34:53,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 310 transitions. [2021-07-06 20:34:53,332 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 143 [2021-07-06 20:34:53,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 202 states and 289 transitions. [2021-07-06 20:34:53,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 202 [2021-07-06 20:34:53,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 202 [2021-07-06 20:34:53,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 289 transitions. [2021-07-06 20:34:53,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:34:53,339 INFO L681 BuchiCegarLoop]: Abstraction has 202 states and 289 transitions. [2021-07-06 20:34:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 289 transitions. [2021-07-06 20:34:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2021-07-06 20:34:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 128 states have (on average 1.421875) internal successors, (182), 127 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 182 transitions. [2021-07-06 20:34:53,377 INFO L704 BuchiCegarLoop]: Abstraction has 128 states and 182 transitions. [2021-07-06 20:34:53,377 INFO L587 BuchiCegarLoop]: Abstraction has 128 states and 182 transitions. [2021-07-06 20:34:53,377 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:34:53,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 182 transitions. [2021-07-06 20:34:53,379 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 90 [2021-07-06 20:34:53,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:53,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:53,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:53,380 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:53,380 INFO L791 eck$LassoCheckResult]: Stem: 380#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 345#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 346#L545 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 371#L553 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 355#L143 assume 0 != main_~tmp~0; 356#L114 ~switchedOnBeforeTS~0 := 0; 344#L906 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 328#L927-1 [2021-07-06 20:34:53,380 INFO L793 eck$LassoCheckResult]: Loop: 328#L927-1 assume !false; 352#L570 assume test_~splverifierCounter~0 < 4; 353#L571 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 387#L579 assume !(0 != test_~tmp~4); 391#L579-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 363#L589 assume !(0 != test_~tmp___0~0); 343#L589-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 336#L599 assume 0 != test_~tmp___2~0; 338#L605-1 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 399#L825 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 393#L916 assume !(0 != ~pumpRunning~0); 384#L740 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 357#L772 assume !(0 == ~pumpRunning~0); 358#L747 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 364#L706 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 365#L927 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 328#L927-1 [2021-07-06 20:34:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:34:53,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:53,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330529252] [2021-07-06 20:34:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:53,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,415 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,451 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,457 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:53,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1062538435, now seen corresponding path program 1 times [2021-07-06 20:34:53,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:53,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973454380] [2021-07-06 20:34:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:53,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:34:53,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:34:53,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:53,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:34:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:34:53,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:34:53,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973454380] [2021-07-06 20:34:53,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973454380] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:34:53,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:34:53,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:34:53,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113389673] [2021-07-06 20:34:53,470 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:34:53,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:34:53,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:34:53,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:34:53,470 INFO L87 Difference]: Start difference. First operand 128 states and 182 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:34:53,523 INFO L93 Difference]: Finished difference Result 175 states and 236 transitions. [2021-07-06 20:34:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:34:53,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 175 states and 236 transitions. [2021-07-06 20:34:53,525 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 126 [2021-07-06 20:34:53,527 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 175 states to 175 states and 236 transitions. [2021-07-06 20:34:53,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 175 [2021-07-06 20:34:53,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 175 [2021-07-06 20:34:53,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 236 transitions. [2021-07-06 20:34:53,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:34:53,535 INFO L681 BuchiCegarLoop]: Abstraction has 175 states and 236 transitions. [2021-07-06 20:34:53,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 236 transitions. [2021-07-06 20:34:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-07-06 20:34:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 175 states have (on average 1.3485714285714285) internal successors, (236), 174 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 236 transitions. [2021-07-06 20:34:53,552 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 236 transitions. [2021-07-06 20:34:53,552 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 236 transitions. [2021-07-06 20:34:53,552 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:34:53,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 236 transitions. [2021-07-06 20:34:53,553 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 126 [2021-07-06 20:34:53,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:53,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:53,555 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:53,556 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] [2021-07-06 20:34:53,556 INFO L791 eck$LassoCheckResult]: Stem: 688#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 654#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 655#L545 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 680#L553 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 666#L143 assume 0 != main_~tmp~0; 667#L114 ~switchedOnBeforeTS~0 := 0; 652#L906 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 653#L927-1 [2021-07-06 20:34:53,556 INFO L793 eck$LassoCheckResult]: Loop: 653#L927-1 assume !false; 661#L570 assume test_~splverifierCounter~0 < 4; 662#L571 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 701#L579 assume !(0 != test_~tmp~4); 706#L579-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 670#L589 assume !(0 != test_~tmp___0~0); 651#L589-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 677#L599 assume 0 != test_~tmp___2~0; 786#L605-1 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 785#L825 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 784#L916 assume !(0 != ~pumpRunning~0); 704#L740 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 664#L772 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 665#L714 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 710#L719 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 685#L874 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 656#L874-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 657#L880 processEnvironment_#t~ret58 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret58;havoc processEnvironment_#t~ret58; 689#L776 assume !(0 != processEnvironment_~tmp~5); 691#L747 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 783#L706 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 781#L927 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 653#L927-1 [2021-07-06 20:34:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:53,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:34:53,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:53,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487324770] [2021-07-06 20:34:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:53,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,585 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,602 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,608 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1275481455, now seen corresponding path program 1 times [2021-07-06 20:34:53,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:53,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249646514] [2021-07-06 20:34:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:53,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:34:53,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:34:53,624 INFO L142 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-07-06 20:34:53,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:34:53,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:34:53,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:53,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:34:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:34:53,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:34:53,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249646514] [2021-07-06 20:34:53,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249646514] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:34:53,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:34:53,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:34:53,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125450917] [2021-07-06 20:34:53,635 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:34:53,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:34:53,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:34:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:34:53,636 INFO L87 Difference]: Start difference. First operand 175 states and 236 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:34:53,773 INFO L93 Difference]: Finished difference Result 619 states and 835 transitions. [2021-07-06 20:34:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:34:53,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 619 states and 835 transitions. [2021-07-06 20:34:53,778 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 443 [2021-07-06 20:34:53,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 619 states to 619 states and 835 transitions. [2021-07-06 20:34:53,783 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 619 [2021-07-06 20:34:53,783 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 619 [2021-07-06 20:34:53,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 619 states and 835 transitions. [2021-07-06 20:34:53,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:34:53,788 INFO L681 BuchiCegarLoop]: Abstraction has 619 states and 835 transitions. [2021-07-06 20:34:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states and 835 transitions. [2021-07-06 20:34:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 340. [2021-07-06 20:34:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 340 states have (on average 1.3235294117647058) internal successors, (450), 339 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 450 transitions. [2021-07-06 20:34:53,814 INFO L704 BuchiCegarLoop]: Abstraction has 340 states and 450 transitions. [2021-07-06 20:34:53,814 INFO L587 BuchiCegarLoop]: Abstraction has 340 states and 450 transitions. [2021-07-06 20:34:53,814 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:34:53,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 340 states and 450 transitions. [2021-07-06 20:34:53,816 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 250 [2021-07-06 20:34:53,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:53,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:53,818 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:53,818 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] [2021-07-06 20:34:53,819 INFO L791 eck$LassoCheckResult]: Stem: 1502#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(13);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(77, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(101, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(116, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(104, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string53.base, #t~string53.offset, 1);call write~init~int(82, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(73, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(84, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 4 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(75, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 1 + #t~string57.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 1467#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1468#L545 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1493#L553 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1479#L143 assume 0 != main_~tmp~0; 1480#L114 ~switchedOnBeforeTS~0 := 0; 1465#L906 havoc test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1466#L927-1 [2021-07-06 20:34:53,819 INFO L793 eck$LassoCheckResult]: Loop: 1466#L927-1 assume !false; 1735#L570 assume test_~splverifierCounter~0 < 4; 1734#L571 test_~tmp~4 := test_#t~nondet44;havoc test_#t~nondet44; 1733#L579 assume !(0 != test_~tmp~4); 1730#L579-1 test_~tmp___0~0 := test_#t~nondet45;havoc test_#t~nondet45; 1729#L589 assume !(0 != test_~tmp___0~0); 1727#L589-1 test_~tmp___2~0 := test_#t~nondet46;havoc test_#t~nondet46; 1726#L599 assume 0 != test_~tmp___2~0; 1725#L605-1 havoc __utac_acc__Specification5_spec__2_#t~ret77;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1745#L825 __utac_acc__Specification5_spec__2_#t~ret77 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret77;havoc __utac_acc__Specification5_spec__2_#t~ret77; 1744#L916 assume !(0 != ~pumpRunning~0); 1522#L740 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1477#L772 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1478#L714 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1532#L719 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 1498#L874 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 1469#L874-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1470#L880 processEnvironment_#t~ret58 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret58;havoc processEnvironment_#t~ret58; 1505#L776 assume !(0 != processEnvironment_~tmp~5); 1507#L747 havoc __utac_acc__Specification5_spec__3_#t~ret78, __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1740#L706 __utac_acc__Specification5_spec__3_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret78;havoc __utac_acc__Specification5_spec__3_#t~ret78; 1739#L927 assume 2 != __utac_acc__Specification5_spec__3_~tmp~7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1738#L825-1 __utac_acc__Specification5_spec__3_#t~ret79 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 1737#L931 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 1466#L927-1 [2021-07-06 20:34:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-07-06 20:34:53,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:53,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111516089] [2021-07-06 20:34:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:53,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,851 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,876 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1671985194, now seen corresponding path program 1 times [2021-07-06 20:34:53,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:53,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756179087] [2021-07-06 20:34:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:53,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,893 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,898 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,901 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:53,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1531391856, now seen corresponding path program 1 times [2021-07-06 20:34:53,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:53,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127563703] [2021-07-06 20:34:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:53,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,933 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:53,946 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:53,954 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:54,083 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-07-06 20:34:54,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:54,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-07-06 20:35:36,328 WARN L205 SmtUtils]: Spent 42.15 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:35:36,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:36,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:35:57,768 WARN L205 SmtUtils]: Spent 21.38 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:35:57,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:35:57 BoogieIcfgContainer [2021-07-06 20:35:57,852 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:35:57,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:35:57,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:35:57,854 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:35:57,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:34:52" (3/4) ... [2021-07-06 20:35:57,856 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:35:57,883 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:35:57,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:35:57,884 INFO L168 Benchmark]: Toolchain (without parser) took 66427.90 ms. Allocated memory was 60.8 MB in the beginning and 121.6 MB in the end (delta: 60.8 MB). Free memory was 40.1 MB in the beginning and 30.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 68.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:57,885 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:35:57,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.34 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 34.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:57,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.75 ms. Allocated memory is still 60.8 MB. Free memory was 33.9 MB in the beginning and 31.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:57,886 INFO L168 Benchmark]: Boogie Preprocessor took 45.45 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 28.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:57,886 INFO L168 Benchmark]: RCFGBuilder took 694.89 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 28.8 MB in the beginning and 54.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:57,886 INFO L168 Benchmark]: BuchiAutomizer took 65296.23 ms. Allocated memory was 77.6 MB in the beginning and 121.6 MB in the end (delta: 44.0 MB). Free memory was 54.9 MB in the beginning and 32.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 76.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:57,887 INFO L168 Benchmark]: Witness Printer took 29.88 ms. Allocated memory is still 121.6 MB. Free memory was 32.4 MB in the beginning and 30.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:35:57,888 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 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.34 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 34.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.75 ms. Allocated memory is still 60.8 MB. Free memory was 33.9 MB in the beginning and 31.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.45 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 28.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 694.89 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 28.8 MB in the beginning and 54.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 65296.23 ms. Allocated memory was 77.6 MB in the beginning and 121.6 MB in the end (delta: 44.0 MB). Free memory was 54.9 MB in the beginning and 32.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 76.9 MB. Max. memory is 16.1 GB. * Witness Printer took 29.88 ms. Allocated memory is still 121.6 MB. Free memory was 32.4 MB in the beginning and 30.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 340 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 65.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 64.7s. 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 71.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 353 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 340 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 384 SDtfs, 1003 SDslu, 1152 SDs, 0 SdLazy, 168 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 175.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 569]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=39733, NULL=0, NULL=1, NULL=39727, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2423f93e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ded7084=53, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72e2b380=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d886c31=0, methaneLevelCritical=0, tmp=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2579e602=0, tmp___1=0, NULL=39725, NULL=0, NULL=39713, NULL=39717, retValue_acc=0, cleanupTimeShifts=4, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=39720, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23a6d327=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1278ecd3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ab7fae3=0, \result=1, NULL=39721, NULL=0, retValue_acc=0, NULL=39732, NULL=0, retValue_acc=1, NULL=0, NULL=39724, NULL=27938, tmp=1, NULL=39728, head=0, NULL=0, NULL=0, tmp=0, NULL=39711, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=39722, NULL=39715, NULL=39714, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cd09b73=0, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=39712, switchedOnBeforeTS=0, NULL=39723, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d70f0a3=0, \result=0, NULL=39734, NULL=0, NULL=0, systemActive=1, NULL=39729, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=39710, tmp___0=0, NULL=39719, \result=0, NULL=0, NULL=39718, retValue_acc=1, NULL=39730, NULL=39709, tmp___2=53, splverifierCounter=0, NULL=0, NULL=39708, NULL=39716, NULL=39726, NULL=39731} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L51] int cleanupTimeShifts = 4; [L326] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int waterLevel = 1; [L632] int methaneLevelCritical = 0; [L728] int pumpRunning = 0; [L729] int systemActive = 1; [L900] int switchedOnBeforeTS ; [L134] int retValue_acc ; [L135] int tmp ; [L549] int retValue_acc ; [L552] retValue_acc = 1 [L553] return (retValue_acc); [L141] tmp = valid_product() [L143] COND TRUE \read(tmp) [L905] switchedOnBeforeTS = 0 [L560] int splverifierCounter ; [L561] int tmp ; [L562] int tmp___0 ; [L563] int tmp___1 ; [L564] int tmp___2 ; [L567] splverifierCounter = 0 Loop: [L569] COND TRUE 1 [L571] COND TRUE splverifierCounter < 4 [L577] tmp = __VERIFIER_nondet_int() [L579] COND FALSE !(\read(tmp)) [L587] tmp___0 = __VERIFIER_nondet_int() [L589] COND FALSE !(\read(tmp___0)) [L597] tmp___2 = __VERIFIER_nondet_int() [L599] COND TRUE \read(tmp___2) [L821] int retValue_acc ; [L824] retValue_acc = pumpRunning [L825] return (retValue_acc); [L914] switchedOnBeforeTS = isPumpRunning() [L740] COND FALSE !(\read(pumpRunning)) [L747] COND TRUE \read(systemActive) [L769] int tmp ; [L772] COND TRUE ! pumpRunning [L866] int retValue_acc ; [L867] int tmp ; [L868] int tmp___0 ; [L711] int retValue_acc ; [L714] COND TRUE waterLevel < 2 [L715] retValue_acc = 1 [L716] return (retValue_acc); [L872] tmp = isHighWaterSensorDry() [L874] COND TRUE \read(tmp) [L875] tmp___0 = 0 [L879] retValue_acc = tmp___0 [L880] return (retValue_acc); [L774] tmp = isHighWaterLevel() [L776] COND FALSE !(\read(tmp)) [L920] int tmp ; [L921] int tmp___0 ; [L702] int retValue_acc ; [L705] retValue_acc = waterLevel [L706] return (retValue_acc); [L925] tmp = getWaterLevel() [L927] COND TRUE tmp != 2 [L821] int retValue_acc ; [L824] retValue_acc = pumpRunning [L825] return (retValue_acc); [L929] tmp___0 = isPumpRunning() [L931] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:35:57,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...