./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product56.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_product56.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 7692c73e7413f9555138866d08e707f26455dbc0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:36:40,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:36:40,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:36:40,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:36:40,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:36:40,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:36:40,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:36:40,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:36:40,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:36:40,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:36:40,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:36:40,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:36:40,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:36:40,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:36:40,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:36:40,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:36:40,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:36:40,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:36:40,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:36:40,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:36:40,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:36:40,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:36:40,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:36:40,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:36:40,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:36:40,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:36:40,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:36:40,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:36:40,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:36:40,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:36:40,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:36:40,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:36:40,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:36:40,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:36:40,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:36:40,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:36:40,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:36:40,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:36:40,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:36:40,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:36:40,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:36:40,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:36:40,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:36:40,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:36:40,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:36:40,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:36:40,554 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:36:40,555 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:36:40,555 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:36:40,555 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:36:40,555 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:36:40,555 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:36:40,556 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:36:40,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:36:40,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:36:40,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:36:40,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:36:40,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:36:40,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:36:40,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:36:40,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:36:40,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:36:40,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:36:40,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:36:40,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:36:40,559 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:36:40,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7692c73e7413f9555138866d08e707f26455dbc0 [2021-07-06 20:36:40,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:36:40,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:36:40,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:36:40,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:36:40,804 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:36:40,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2021-07-06 20:36:40,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3420d1663/c48e4fc51aa4461dac3bc798eff7b56e/FLAG662e39c5c [2021-07-06 20:36:41,210 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:36:41,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2021-07-06 20:36:41,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3420d1663/c48e4fc51aa4461dac3bc798eff7b56e/FLAG662e39c5c [2021-07-06 20:36:41,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3420d1663/c48e4fc51aa4461dac3bc798eff7b56e [2021-07-06 20:36:41,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:36:41,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:36:41,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:36:41,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:36:41,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:36:41,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:36:41" (1/1) ... [2021-07-06 20:36:41,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c725d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:41, skipping insertion in model container [2021-07-06 20:36:41,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:36:41" (1/1) ... [2021-07-06 20:36:41,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:36:41,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:36:41,795 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_product56.cil.c[7822,7835] [2021-07-06 20:36:41,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:36:41,892 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:36:41,943 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_product56.cil.c[7822,7835] [2021-07-06 20:36:41,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:36:41,999 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:36:42,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42 WrapperNode [2021-07-06 20:36:42,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:36:42,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:36:42,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:36:42,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:36:42,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:36:42,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:36:42,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:36:42,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:36:42,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:36:42,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:36:42,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:36:42,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:36:42,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (1/1) ... [2021-07-06 20:36:42,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:36:42,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:36:42,155 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 20:36:42,176 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 20:36:42,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:36:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:36:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:36:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:36:42,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:36:42,900 INFO L299 CfgBuilder]: Removed 296 assume(true) statements. [2021-07-06 20:36:42,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:36:42 BoogieIcfgContainer [2021-07-06 20:36:42,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:36:42,902 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:36:42,902 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:36:42,904 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:36:42,905 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:36:42,905 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:36:41" (1/3) ... [2021-07-06 20:36:42,905 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@347c18ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:36:42, skipping insertion in model container [2021-07-06 20:36:42,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:36:42,906 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:42" (2/3) ... [2021-07-06 20:36:42,906 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@347c18ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:36:42, skipping insertion in model container [2021-07-06 20:36:42,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:36:42,906 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:36:42" (3/3) ... [2021-07-06 20:36:42,907 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2021-07-06 20:36:42,933 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:36:42,933 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:36:42,933 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:36:42,933 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:36:42,933 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:36:42,933 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:36:42,934 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:36:42,934 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:36:42,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 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 20:36:42,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-07-06 20:36:42,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:42,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:42,968 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:42,968 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:42,968 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:36:42,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 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 20:36:42,973 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2021-07-06 20:36:42,974 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:42,974 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:42,974 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:42,974 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:42,981 INFO L791 eck$LassoCheckResult]: Stem: 54#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 11#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 64#L506true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 196#L514true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 197#L1026true assume 0 != main_~tmp~10; 52#L1002true ~switchedOnBeforeTS~0 := 0; 49#L534true havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 9#L555-1true [2021-07-06 20:36:42,985 INFO L793 eck$LassoCheckResult]: Loop: 9#L555-1true assume !false; 73#L423true assume test_~splverifierCounter~0 < 4; 42#L424true test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 194#L432true assume !(0 != test_~tmp~5); 195#L432-1true test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 78#L442true assume !(0 != test_~tmp___0~2); 76#L442-1true test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 126#L452true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 168#L460-1true havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 139#L309true __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 8#L544true assume !(0 != ~pumpRunning~0); 90#L172true assume !(0 != ~systemActive~0); 172#L179true havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 26#L125true __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 7#L555true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 9#L555-1true [2021-07-06 20:36:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:42,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:36:42,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:42,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995724216] [2021-07-06 20:36:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:42,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:43,163 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:43,224 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:43,261 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:43,270 INFO L82 PathProgramCache]: Analyzing trace with hash 680336182, now seen corresponding path program 1 times [2021-07-06 20:36:43,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:43,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413464703] [2021-07-06 20:36:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:43,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:36:43,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:43,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:43,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:43,305 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 20:36:43,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:36:43,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413464703] [2021-07-06 20:36:43,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413464703] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:36:43,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:36:43,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:36:43,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600205416] [2021-07-06 20:36:43,309 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:36:43,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:36:43,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:36:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:36:43,319 INFO L87 Difference]: Start difference. First operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:36:43,372 INFO L93 Difference]: Finished difference Result 387 states and 575 transitions. [2021-07-06 20:36:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:36:43,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 575 transitions. [2021-07-06 20:36:43,384 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 254 [2021-07-06 20:36:43,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 373 states and 560 transitions. [2021-07-06 20:36:43,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 373 [2021-07-06 20:36:43,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 373 [2021-07-06 20:36:43,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 373 states and 560 transitions. [2021-07-06 20:36:43,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:36:43,393 INFO L681 BuchiCegarLoop]: Abstraction has 373 states and 560 transitions. [2021-07-06 20:36:43,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states and 560 transitions. [2021-07-06 20:36:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2021-07-06 20:36:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 371 states have (on average 1.5013477088948788) internal successors, (557), 370 states have internal predecessors, (557), 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 20:36:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 557 transitions. [2021-07-06 20:36:43,423 INFO L704 BuchiCegarLoop]: Abstraction has 371 states and 557 transitions. [2021-07-06 20:36:43,423 INFO L587 BuchiCegarLoop]: Abstraction has 371 states and 557 transitions. [2021-07-06 20:36:43,423 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:36:43,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 371 states and 557 transitions. [2021-07-06 20:36:43,429 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 252 [2021-07-06 20:36:43,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:43,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:43,431 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:43,431 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:43,431 INFO L791 eck$LassoCheckResult]: Stem: 791#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 616#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 617#L506 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 799#L514 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 800#L1026 assume 0 != main_~tmp~10; 786#L1002 ~switchedOnBeforeTS~0 := 0; 784#L534 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 608#L555-1 [2021-07-06 20:36:43,432 INFO L793 eck$LassoCheckResult]: Loop: 608#L555-1 assume !false; 612#L423 assume test_~splverifierCounter~0 < 4; 801#L424 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 856#L432 assume !(0 != test_~tmp~5); 854#L432-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 853#L442 assume !(0 != test_~tmp___0~2); 851#L442-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 719#L452 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 721#L460-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 732#L309 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 609#L544 assume !(0 != ~pumpRunning~0); 610#L172 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 670#L256 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 597#L230-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 599#L204-3 assume !(0 == ~pumpRunning~0); 594#L179 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 660#L125 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 606#L555 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 608#L555-1 [2021-07-06 20:36:43,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:43,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:36:43,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:43,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883677430] [2021-07-06 20:36:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:43,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:43,463 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:43,498 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:43,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1848123806, now seen corresponding path program 1 times [2021-07-06 20:36:43,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:43,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256080313] [2021-07-06 20:36:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:43,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:36:43,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:43,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:43,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:43,537 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 20:36:43,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:36:43,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256080313] [2021-07-06 20:36:43,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256080313] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:36:43,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:36:43,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:36:43,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244900820] [2021-07-06 20:36:43,539 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:36:43,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:36:43,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:36:43,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:36:43,539 INFO L87 Difference]: Start difference. First operand 371 states and 557 transitions. cyclomatic complexity: 189 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20:36:43,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:36:43,624 INFO L93 Difference]: Finished difference Result 398 states and 559 transitions. [2021-07-06 20:36:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:36:43,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 559 transitions. [2021-07-06 20:36:43,627 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-07-06 20:36:43,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 559 transitions. [2021-07-06 20:36:43,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2021-07-06 20:36:43,630 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2021-07-06 20:36:43,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 559 transitions. [2021-07-06 20:36:43,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:36:43,631 INFO L681 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-07-06 20:36:43,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 559 transitions. [2021-07-06 20:36:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-07-06 20:36:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 398 states have (on average 1.4045226130653266) internal successors, (559), 397 states have internal predecessors, (559), 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 20:36:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 559 transitions. [2021-07-06 20:36:43,650 INFO L704 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-07-06 20:36:43,650 INFO L587 BuchiCegarLoop]: Abstraction has 398 states and 559 transitions. [2021-07-06 20:36:43,650 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:36:43,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 398 states and 559 transitions. [2021-07-06 20:36:43,652 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-07-06 20:36:43,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:43,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:43,654 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:43,654 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 20:36:43,654 INFO L791 eck$LassoCheckResult]: Stem: 1544#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1390#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1391#L506 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1557#L514 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1559#L1026 assume 0 != main_~tmp~10; 1541#L1002 ~switchedOnBeforeTS~0 := 0; 1540#L534 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1383#L555-1 [2021-07-06 20:36:43,654 INFO L793 eck$LassoCheckResult]: Loop: 1383#L555-1 assume !false; 1564#L423 assume test_~splverifierCounter~0 < 4; 1565#L424 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 1549#L432 assume !(0 != test_~tmp~5); 1551#L432-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 1404#L442 assume !(0 != test_~tmp___0~2); 1371#L442-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 1372#L452 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1488#L460-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1647#L309 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 1644#L544 assume !(0 != ~pumpRunning~0); 1643#L172 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1543#L256 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 1373#L230-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1374#L204-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1473#L133-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1474#L138-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 1494#L358-9 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 1501#L358-11 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1459#L364-3 processEnvironment__wrappee__highWaterSensor_#t~ret17 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret17;havoc processEnvironment__wrappee__highWaterSensor_#t~ret17; 1401#L208-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1369#L179 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1523#L125 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 1381#L555 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 1383#L555-1 [2021-07-06 20:36:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:36:43,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:43,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051691457] [2021-07-06 20:36:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:43,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:43,705 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:43,748 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:43,755 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1709468010, now seen corresponding path program 1 times [2021-07-06 20:36:43,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:43,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414300087] [2021-07-06 20:36:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:43,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:36:43,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:43,776 INFO L142 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-07-06 20:36:43,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:36:43,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:36:43,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:36:43,790 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 20:36:43,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:36:43,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414300087] [2021-07-06 20:36:43,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414300087] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:36:43,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:36:43,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:36:43,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377465364] [2021-07-06 20:36:43,791 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:36:43,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:36:43,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:36:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:36:43,792 INFO L87 Difference]: Start difference. First operand 398 states and 559 transitions. cyclomatic complexity: 164 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 20:36:44,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:36:44,030 INFO L93 Difference]: Finished difference Result 1823 states and 2579 transitions. [2021-07-06 20:36:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:36:44,031 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1823 states and 2579 transitions. [2021-07-06 20:36:44,039 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 1262 [2021-07-06 20:36:44,047 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1823 states to 1823 states and 2579 transitions. [2021-07-06 20:36:44,047 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1823 [2021-07-06 20:36:44,050 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1823 [2021-07-06 20:36:44,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1823 states and 2579 transitions. [2021-07-06 20:36:44,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:36:44,052 INFO L681 BuchiCegarLoop]: Abstraction has 1823 states and 2579 transitions. [2021-07-06 20:36:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states and 2579 transitions. [2021-07-06 20:36:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 783. [2021-07-06 20:36:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 783 states have (on average 1.3882503192848021) internal successors, (1087), 782 states have internal predecessors, (1087), 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 20:36:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1087 transitions. [2021-07-06 20:36:44,066 INFO L704 BuchiCegarLoop]: Abstraction has 783 states and 1087 transitions. [2021-07-06 20:36:44,067 INFO L587 BuchiCegarLoop]: Abstraction has 783 states and 1087 transitions. [2021-07-06 20:36:44,067 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:36:44,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 783 states and 1087 transitions. [2021-07-06 20:36:44,069 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 554 [2021-07-06 20:36:44,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:44,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:44,070 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:44,071 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:44,071 INFO L791 eck$LassoCheckResult]: Stem: 3786#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 3629#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 3630#L506 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 3795#L514 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 3796#L1026 assume 0 != main_~tmp~10; 3784#L1002 ~switchedOnBeforeTS~0 := 0; 3782#L534 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3783#L555-1 [2021-07-06 20:36:44,071 INFO L793 eck$LassoCheckResult]: Loop: 3783#L555-1 assume !false; 4153#L423 assume test_~splverifierCounter~0 < 4; 4151#L424 test_~tmp~5 := test_#t~nondet39;havoc test_#t~nondet39; 4149#L432 assume !(0 != test_~tmp~5); 4146#L432-1 test_~tmp___0~2 := test_#t~nondet40;havoc test_#t~nondet40; 4145#L442 assume !(0 != test_~tmp___0~2); 4143#L442-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 4142#L452 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 4141#L460-1 havoc __utac_acc__Specification5_spec__2_#t~ret44;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 4387#L309 __utac_acc__Specification5_spec__2_#t~ret44 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret44;havoc __utac_acc__Specification5_spec__2_#t~ret44; 3624#L544 assume !(0 != ~pumpRunning~0); 3625#L172 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 3680#L256 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret18, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 3613#L230-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 3614#L204-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 3713#L133-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 3714#L138-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 3733#L358-9 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 3742#L358-11 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 3697#L364-3 processEnvironment__wrappee__highWaterSensor_#t~ret17 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret17;havoc processEnvironment__wrappee__highWaterSensor_#t~ret17; 3698#L208-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 3974#L179 havoc __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_#t~ret46, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 4227#L125 __utac_acc__Specification5_spec__3_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 4158#L555 assume 2 != __utac_acc__Specification5_spec__3_~tmp~6;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 4159#L309-1 __utac_acc__Specification5_spec__3_#t~ret46 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret46;havoc __utac_acc__Specification5_spec__3_#t~ret46; 4154#L559 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 3783#L555-1 [2021-07-06 20:36:44,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:44,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-07-06 20:36:44,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:44,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814539118] [2021-07-06 20:36:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:44,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:44,106 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:44,134 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:44,145 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:44,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:44,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2121242117, now seen corresponding path program 1 times [2021-07-06 20:36:44,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:44,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658143428] [2021-07-06 20:36:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:44,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:44,154 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:44,161 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:44,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:44,164 INFO L82 PathProgramCache]: Analyzing trace with hash 155030475, now seen corresponding path program 1 times [2021-07-06 20:36:44,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:44,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898241625] [2021-07-06 20:36:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:44,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:44,179 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:44,193 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:44,202 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:44,318 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-06 20:36:44,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:44,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-07-06 20:37:27,034 WARN L205 SmtUtils]: Spent 42.64 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:37:27,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:27,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:37:48,634 WARN L205 SmtUtils]: Spent 21.56 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:37:48,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:37:48 BoogieIcfgContainer [2021-07-06 20:37:48,715 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:37:48,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:37:48,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:37:48,716 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:37:48,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:36:42" (3/4) ... [2021-07-06 20:37:48,718 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:37:48,774 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:37:48,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:37:48,781 INFO L168 Benchmark]: Toolchain (without parser) took 67187.44 ms. Allocated memory was 56.6 MB in the beginning and 127.9 MB in the end (delta: 71.3 MB). Free memory was 34.3 MB in the beginning and 37.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:48,781 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.3 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:37:48,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.65 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 42.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:48,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.49 ms. Allocated memory is still 69.2 MB. Free memory was 42.6 MB in the beginning and 37.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:48,785 INFO L168 Benchmark]: Boogie Preprocessor took 59.76 ms. Allocated memory is still 69.2 MB. Free memory was 37.8 MB in the beginning and 50.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:48,788 INFO L168 Benchmark]: RCFGBuilder took 772.56 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 50.7 MB in the beginning and 68.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:48,788 INFO L168 Benchmark]: BuchiAutomizer took 65813.20 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 68.7 MB in the beginning and 40.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 84.0 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:48,789 INFO L168 Benchmark]: Witness Printer took 64.66 ms. Allocated memory is still 127.9 MB. Free memory was 40.3 MB in the beginning and 37.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:48,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.3 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.65 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 42.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.49 ms. Allocated memory is still 69.2 MB. Free memory was 42.6 MB in the beginning and 37.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.76 ms. Allocated memory is still 69.2 MB. Free memory was 37.8 MB in the beginning and 50.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 772.56 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 50.7 MB in the beginning and 68.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 65813.20 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 68.7 MB in the beginning and 40.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 84.0 MB. Max. memory is 16.1 GB. * Witness Printer took 64.66 ms. Allocated memory is still 127.9 MB. Free memory was 40.3 MB in the beginning and 37.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 783 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 65.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 65.2s. Construction of modules took 0.2s. 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 54.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1042 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 783 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 950 SDtfs, 1462 SDslu, 1515 SDs, 0 SdLazy, 242 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 223.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 422]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4992} State at position 1 is {NULL=0, NULL=5018, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74a93228=0, NULL=4992, NULL=4998, methaneLevelCritical=0, tmp=0, NULL=0, NULL=5004, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=5003, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67fcd46e=0, NULL=5013, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25842cf2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43c9710f=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@131b0578=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6cddb5c1=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=5005, NULL=0, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=4994, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=5017, NULL=5019, NULL=5009, tmp=0, head=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75c58069=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e52726b=0, NULL=5020, NULL=5001, NULL=4993, tmp=0, tmp=1, tmp___0=0, NULL=0, NULL=0, NULL=4995, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4561cc39=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=4996, NULL=4997, switchedOnBeforeTS=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1eb61f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2be38df6=0, NULL=0, systemActive=1, NULL=5006, \result=1, NULL=0, NULL=0, NULL=5002, \result=0, NULL=0, NULL=5015, retValue_acc=0, \result=0, tmp___0=0, NULL=5000, NULL=0, NULL=4999, retValue_acc=1, NULL=5008, NULL=5010, NULL=5016, tmp___2=68, splverifierCounter=0, NULL=0, NULL=5012, NULL=5007, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28f0cd92=0, NULL=0, NULL=5014, NULL=0, NULL=5011, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L528] int switchedOnBeforeTS ; [L746] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L943] int cleanupTimeShifts = 4; [L1017] int retValue_acc ; [L1018] int tmp ; [L510] int retValue_acc ; [L513] retValue_acc = 1 [L514] return (retValue_acc); [L1024] tmp = valid_product() [L1026] COND TRUE \read(tmp) [L533] switchedOnBeforeTS = 0 [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 Loop: [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND FALSE !(\read(tmp)) [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L406] systemActive = 1 [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L542] switchedOnBeforeTS = isPumpRunning() [L172] COND FALSE !(\read(pumpRunning)) [L179] COND TRUE \read(systemActive) [L253] int tmp ; [L256] COND FALSE !(\read(pumpRunning)) [L227] int tmp ; [L230] COND FALSE !(\read(pumpRunning)) [L201] int tmp ; [L204] COND TRUE ! pumpRunning [L350] int retValue_acc ; [L351] int tmp ; [L352] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L356] tmp = isHighWaterSensorDry() [L358] COND TRUE \read(tmp) [L359] tmp___0 = 0 [L363] retValue_acc = tmp___0 [L364] return (retValue_acc); [L206] tmp = isHighWaterLevel() [L208] COND FALSE !(\read(tmp)) [L548] int tmp ; [L549] int tmp___0 ; [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L553] tmp = getWaterLevel() [L555] COND TRUE tmp != 2 [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L557] tmp___0 = isPumpRunning() [L559] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:37:48,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...