./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product39.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 5381b58f81d44aa70d19c6d31d0ce960b58130fb ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:10:39,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:10:39,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:10:39,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:10:39,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:10:39,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:10:39,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:10:39,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:10:39,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:10:39,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:10:39,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:10:39,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:10:39,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:10:39,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:10:39,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:10:39,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:10:39,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:10:39,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:10:39,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:10:39,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:10:39,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:10:39,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:10:39,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:10:39,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:10:39,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:10:39,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:10:39,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:10:39,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:10:39,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:10:39,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:10:39,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:10:39,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:10:39,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:10:39,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:10:39,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:10:39,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:10:39,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:10:39,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:10:39,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:10:39,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:10:39,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:10:39,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:10:39,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:10:39,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:10:39,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:10:39,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:10:39,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:10:39,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:10:39,637 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:10:39,637 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:10:39,637 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:10:39,637 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:10:39,638 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:10:39,638 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:10:39,638 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:10:39,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:10:39,639 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:10:39,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:10:39,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:10:39,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:10:39,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:10:39,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:10:39,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:10:39,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:10:39,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:10:39,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:10:39,641 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:10:39,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:10:39,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:10:39,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:10:39,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:10:39,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:10:39,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:10:39,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:10:39,643 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:10:39,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5381b58f81d44aa70d19c6d31d0ce960b58130fb [2021-08-27 16:10:39,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:10:39,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:10:39,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:10:39,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:10:39,982 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:10:39,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2021-08-27 16:10:40,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b32530b/b42be0c38be940ac94513009361e6ce8/FLAGee9aff6ea [2021-08-27 16:10:40,479 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:10:40,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2021-08-27 16:10:40,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b32530b/b42be0c38be940ac94513009361e6ce8/FLAGee9aff6ea [2021-08-27 16:10:40,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b32530b/b42be0c38be940ac94513009361e6ce8 [2021-08-27 16:10:40,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:10:40,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:10:40,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:10:40,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:10:40,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:10:40,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:40,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274377e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40, skipping insertion in model container [2021-08-27 16:10:40,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:40,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:10:40,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:10:40,764 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c[6762,6775] [2021-08-27 16:10:40,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:10:40,869 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:10:40,893 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c[6762,6775] [2021-08-27 16:10:40,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:10:40,928 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:10:40,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40 WrapperNode [2021-08-27 16:10:40,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:10:40,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:10:40,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:10:40,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:10:40,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:40,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:40,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:10:40,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:10:40,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:10:40,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:10:41,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:10:41,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:10:41,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:10:41,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:10:41,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (1/1) ... [2021-08-27 16:10:41,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:10:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:10:41,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:10:41,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:10:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:10:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:10:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:10:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:10:42,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:10:42,017 INFO L299 CfgBuilder]: Removed 166 assume(true) statements. [2021-08-27 16:10:42,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:10:42 BoogieIcfgContainer [2021-08-27 16:10:42,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:10:42,020 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:10:42,020 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:10:42,022 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:10:42,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:10:42,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:10:40" (1/3) ... [2021-08-27 16:10:42,024 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@435ecdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:10:42, skipping insertion in model container [2021-08-27 16:10:42,024 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:10:42,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:40" (2/3) ... [2021-08-27 16:10:42,024 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@435ecdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:10:42, skipping insertion in model container [2021-08-27 16:10:42,024 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:10:42,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:10:42" (3/3) ... [2021-08-27 16:10:42,026 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2021-08-27 16:10:42,063 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:10:42,063 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:10:42,063 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:10:42,063 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:10:42,064 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:10:42,064 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:10:42,064 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:10:42,064 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:10:42,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:42,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 16:10:42,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:42,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:42,106 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:42,106 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:42,106 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:10:42,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:42,113 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 16:10:42,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:42,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:42,114 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:42,115 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:42,118 INFO L791 eck$LassoCheckResult]: Stem: 106#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.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~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 37#L-1true havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 105#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 56#L75true main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 93#L906true assume 0 != main_~tmp~7; 32#L883true havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 73#L935-1true [2021-08-27 16:10:42,119 INFO L793 eck$LassoCheckResult]: Loop: 73#L935-1true assume !false; 17#L393true assume test_~splverifierCounter~0 < 4; 14#L394true test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 84#L402true assume !(0 != test_~tmp~3); 6#L402-1true test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 54#L412true assume !(0 != test_~tmp___0~1); 86#L412-1true test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 15#L422true assume 0 != test_~tmp___2~0; 66#L428-1true assume !(0 != ~pumpRunning~0); 98#L195true assume !(0 != ~systemActive~0); 81#L202true havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 115#L130-1true __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 67#L929true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 73#L935-1true [2021-08-27 16:10:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:42,124 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:10:42,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:42,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662571601] [2021-08-27 16:10:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:42,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:42,335 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:42,479 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:42,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1671401922, now seen corresponding path program 1 times [2021-08-27 16:10:42,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:42,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952938819] [2021-08-27 16:10:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:42,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:42,501 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:42,511 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:42,514 INFO L82 PathProgramCache]: Analyzing trace with hash 42877016, now seen corresponding path program 1 times [2021-08-27 16:10:42,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:42,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082310484] [2021-08-27 16:10:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:42,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:10:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:10:42,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:10:42,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082310484] [2021-08-27 16:10:42,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082310484] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:10:42,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:10:42,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:10:42,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801735322] [2021-08-27 16:10:42,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:10:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:10:42,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:10:42,886 INFO L87 Difference]: Start difference. First operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:10:43,092 INFO L93 Difference]: Finished difference Result 282 states and 405 transitions. [2021-08-27 16:10:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:10:43,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 282 states and 405 transitions. [2021-08-27 16:10:43,109 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 181 [2021-08-27 16:10:43,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 282 states to 261 states and 384 transitions. [2021-08-27 16:10:43,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 261 [2021-08-27 16:10:43,119 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 261 [2021-08-27 16:10:43,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 261 states and 384 transitions. [2021-08-27 16:10:43,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:10:43,124 INFO L681 BuchiCegarLoop]: Abstraction has 261 states and 384 transitions. [2021-08-27 16:10:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states and 384 transitions. [2021-08-27 16:10:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 156. [2021-08-27 16:10:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 156 states have (on average 1.4615384615384615) internal successors, (228), 155 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2021-08-27 16:10:43,170 INFO L704 BuchiCegarLoop]: Abstraction has 156 states and 228 transitions. [2021-08-27 16:10:43,170 INFO L587 BuchiCegarLoop]: Abstraction has 156 states and 228 transitions. [2021-08-27 16:10:43,170 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:10:43,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 228 transitions. [2021-08-27 16:10:43,172 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 108 [2021-08-27 16:10:43,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:43,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:43,173 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:43,173 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:43,173 INFO L791 eck$LassoCheckResult]: Stem: 524#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.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~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 473#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 474#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 495#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 496#L906 assume 0 != main_~tmp~7; 465#L883 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 466#L935-1 [2021-08-27 16:10:43,174 INFO L793 eck$LassoCheckResult]: Loop: 466#L935-1 assume !false; 438#L393 assume test_~splverifierCounter~0 < 4; 433#L394 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 434#L402 assume !(0 != test_~tmp~3); 420#L402-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 421#L412 assume !(0 != test_~tmp___0~1); 423#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 435#L422 assume 0 != test_~tmp___2~0; 436#L428-1 assume !(0 != ~pumpRunning~0); 463#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 514#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 443#L227-1 assume !(0 == ~pumpRunning~0); 445#L202 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 515#L130-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 504#L929 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 466#L935-1 [2021-08-27 16:10:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:43,174 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:10:43,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:43,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607841810] [2021-08-27 16:10:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:43,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:43,217 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:43,264 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:43,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1955219765, now seen corresponding path program 1 times [2021-08-27 16:10:43,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:43,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594687474] [2021-08-27 16:10:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:43,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:10:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:10:43,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:10:43,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594687474] [2021-08-27 16:10:43,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594687474] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:10:43,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:10:43,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:10:43,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101708313] [2021-08-27 16:10:43,303 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:10:43,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:10:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:10:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:10:43,306 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:10:43,442 INFO L93 Difference]: Finished difference Result 201 states and 277 transitions. [2021-08-27 16:10:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:10:43,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 277 transitions. [2021-08-27 16:10:43,446 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-08-27 16:10:43,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 277 transitions. [2021-08-27 16:10:43,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2021-08-27 16:10:43,452 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2021-08-27 16:10:43,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 277 transitions. [2021-08-27 16:10:43,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:10:43,457 INFO L681 BuchiCegarLoop]: Abstraction has 201 states and 277 transitions. [2021-08-27 16:10:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 277 transitions. [2021-08-27 16:10:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-08-27 16:10:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3781094527363185) internal successors, (277), 200 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 277 transitions. [2021-08-27 16:10:43,473 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 277 transitions. [2021-08-27 16:10:43,473 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 277 transitions. [2021-08-27 16:10:43,474 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:10:43,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 277 transitions. [2021-08-27 16:10:43,476 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-08-27 16:10:43,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:43,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:43,477 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:43,477 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:43,478 INFO L791 eck$LassoCheckResult]: Stem: 907#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.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~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 838#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 839#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 863#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 864#L906 assume 0 != main_~tmp~7; 829#L883 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 830#L935-1 [2021-08-27 16:10:43,478 INFO L793 eck$LassoCheckResult]: Loop: 830#L935-1 assume !false; 803#L393 assume test_~splverifierCounter~0 < 4; 798#L394 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 799#L402 assume !(0 != test_~tmp~3); 784#L402-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 785#L412 assume !(0 != test_~tmp___0~1); 787#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 800#L422 assume 0 != test_~tmp___2~0; 801#L428-1 assume !(0 != ~pumpRunning~0); 900#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 886#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 808#L227-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 809#L170-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 856#L175-1 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 866#L355-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 867#L355-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 805#L361-1 processEnvironment__wrappee__highWaterSensor_#t~ret18 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret18;havoc processEnvironment__wrappee__highWaterSensor_#t~ret18; 806#L231-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 845#L202 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 973#L130-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 970#L929 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 830#L935-1 [2021-08-27 16:10:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:43,478 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:10:43,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:43,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754206811] [2021-08-27 16:10:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:43,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:43,532 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:43,573 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:43,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1592970081, now seen corresponding path program 1 times [2021-08-27 16:10:43,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:43,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724792752] [2021-08-27 16:10:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:43,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:43,579 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:43,584 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:43,584 INFO L82 PathProgramCache]: Analyzing trace with hash 2049041275, now seen corresponding path program 1 times [2021-08-27 16:10:43,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:43,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733730814] [2021-08-27 16:10:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:43,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:10:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:10:43,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:10:43,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733730814] [2021-08-27 16:10:43,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733730814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:10:43,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:10:43,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:10:43,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723969434] [2021-08-27 16:10:43,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:10:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:10:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:10:43,909 INFO L87 Difference]: Start difference. First operand 201 states and 277 transitions. cyclomatic complexity: 79 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:10:44,036 INFO L93 Difference]: Finished difference Result 663 states and 915 transitions. [2021-08-27 16:10:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:10:44,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 663 states and 915 transitions. [2021-08-27 16:10:44,056 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 495 [2021-08-27 16:10:44,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 663 states to 663 states and 915 transitions. [2021-08-27 16:10:44,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 663 [2021-08-27 16:10:44,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 663 [2021-08-27 16:10:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 663 states and 915 transitions. [2021-08-27 16:10:44,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:10:44,063 INFO L681 BuchiCegarLoop]: Abstraction has 663 states and 915 transitions. [2021-08-27 16:10:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states and 915 transitions. [2021-08-27 16:10:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 396. [2021-08-27 16:10:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 396 states have (on average 1.3535353535353536) internal successors, (536), 395 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:10:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 536 transitions. [2021-08-27 16:10:44,073 INFO L704 BuchiCegarLoop]: Abstraction has 396 states and 536 transitions. [2021-08-27 16:10:44,074 INFO L587 BuchiCegarLoop]: Abstraction has 396 states and 536 transitions. [2021-08-27 16:10:44,074 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:10:44,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 396 states and 536 transitions. [2021-08-27 16:10:44,076 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 284 [2021-08-27 16:10:44,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:44,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:44,077 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:44,077 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:44,077 INFO L791 eck$LassoCheckResult]: Stem: 1805#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.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~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1720#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 1721#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1751#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 1752#L906 assume 0 != main_~tmp~7; 1712#L883 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1713#L935-1 [2021-08-27 16:10:44,077 INFO L793 eck$LassoCheckResult]: Loop: 1713#L935-1 assume !false; 1996#L393 assume test_~splverifierCounter~0 < 4; 1679#L394 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 1680#L402 assume !(0 != test_~tmp~3); 2040#L402-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 2039#L412 assume !(0 != test_~tmp___0~1); 2036#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 2035#L422 assume 0 != test_~tmp___2~0; 1802#L428-1 assume !(0 != ~pumpRunning~0); 2023#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1973#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1995#L227-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 2033#L170-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2029#L175-1 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 2021#L355-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1783#L355-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1685#L361-1 processEnvironment__wrappee__highWaterSensor_#t~ret18 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret18;havoc processEnvironment__wrappee__highWaterSensor_#t~ret18; 1686#L231-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1729#L202 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2005#L130-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 2004#L929 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 2003#L162 __utac_acc__Specification3_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 2001#L935 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1713#L935-1 [2021-08-27 16:10:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:10:44,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:44,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812862178] [2021-08-27 16:10:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:44,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:44,099 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:44,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:44,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1835898419, now seen corresponding path program 1 times [2021-08-27 16:10:44,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:44,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378638745] [2021-08-27 16:10:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:44,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:44,129 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:44,135 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2033651661, now seen corresponding path program 1 times [2021-08-27 16:10:44,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:44,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610496631] [2021-08-27 16:10:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:44,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:44,156 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:44,186 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:23,076 WARN L207 SmtUtils]: Spent 38.56 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:12:02,552 WARN L207 SmtUtils]: Spent 19.46 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:12:02,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:12:02 BoogieIcfgContainer [2021-08-27 16:12:02,682 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:12:02,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:12:02,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:12:02,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:12:02,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:10:42" (3/4) ... [2021-08-27 16:12:02,686 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:12:02,731 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:12:02,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:12:02,736 INFO L168 Benchmark]: Toolchain (without parser) took 82225.75 ms. Allocated memory was 50.3 MB in the beginning and 140.5 MB in the end (delta: 90.2 MB). Free memory was 24.9 MB in the beginning and 34.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:12:02,736 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 50.3 MB. Free memory is still 32.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:12:02,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.31 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.7 MB in the beginning and 37.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:12:02,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.00 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 33.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:12:02,737 INFO L168 Benchmark]: Boogie Preprocessor took 71.95 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 31.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:12:02,738 INFO L168 Benchmark]: RCFGBuilder took 949.93 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 31.1 MB in the beginning and 38.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:12:02,741 INFO L168 Benchmark]: BuchiAutomizer took 80662.89 ms. Allocated memory was 81.8 MB in the beginning and 140.5 MB in the end (delta: 58.7 MB). Free memory was 38.7 MB in the beginning and 36.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 71.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:12:02,741 INFO L168 Benchmark]: Witness Printer took 51.66 ms. Allocated memory is still 140.5 MB. Free memory was 36.2 MB in the beginning and 34.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:12:02,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 50.3 MB. Free memory is still 32.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.31 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.7 MB in the beginning and 37.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.00 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 33.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.95 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 31.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 949.93 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 31.1 MB in the beginning and 38.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 80662.89 ms. Allocated memory was 81.8 MB in the beginning and 140.5 MB in the end (delta: 58.7 MB). Free memory was 38.7 MB in the beginning and 36.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 71.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.66 ms. Allocated memory is still 140.5 MB. Free memory was 36.2 MB in the beginning and 34.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 396 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 80.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 79.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 62.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 372 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 396 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 557 SDtfs, 1536 SDslu, 1462 SDs, 0 SdLazy, 138 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 275.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 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: 392]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=16666} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=16666, NULL=16672, NULL=0, NULL=16679, NULL=16699, methaneLevelCritical=0, tmp=0, retValue_acc=0, tmp___1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ae12ae8=0, NULL=16696, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@563daebe=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30b1eb68=0, tmp=0, NULL=16692, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28822b13=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@be7b892=63, waterLevel=1, NULL=0, NULL=16697, retValue_acc=1, \result=1, head=0, pumpRunning=0, NULL=16683, retValue_acc=1, NULL=0, NULL=0, tmp=1, NULL=0, \result=1, NULL=16693, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=16680, tmp___0=0, NULL=16681, NULL=16668, NULL=16677, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@649045a9=0, NULL=0, NULL=0, NULL=16695, NULL=16674, NULL=16682, NULL=16700, NULL=16675, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3740b386=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@170911fa=0, NULL=0, NULL=16694, NULL=16667, tmp___0=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@84b3017=0, NULL=0, tmp=0, NULL=16701, NULL=16698, tmp___0=1, NULL=0, systemActive=1, NULL=16691, \result=1, NULL=0, \result=0, retValue_acc=0, retValue_acc=0, NULL=16673, \result=0, NULL=0, NULL=0, NULL=16678, NULL=16671, retValue_acc=1, tmp___2=63, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=16676, NULL=16669, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67782e47=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ca23d7f=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=16670} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L87] int waterLevel = 1; [L88] int methaneLevelCritical = 0; [L187] int pumpRunning = 0; [L188] int systemActive = 1; [L627] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int cleanupTimeShifts = 4; [L897] int retValue_acc ; [L898] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L383] int splverifierCounter ; [L384] int tmp ; [L385] int tmp___0 ; [L386] int tmp___1 ; [L387] int tmp___2 ; [L390] splverifierCounter = 0 Loop: [L392] COND TRUE 1 [L394] COND TRUE splverifierCounter < 4 [L400] tmp = __VERIFIER_nondet_int() [L402] COND FALSE !(\read(tmp)) [L410] tmp___0 = __VERIFIER_nondet_int() [L412] COND FALSE !(\read(tmp___0)) [L420] tmp___2 = __VERIFIER_nondet_int() [L422] COND TRUE \read(tmp___2) [L195] COND FALSE !(\read(pumpRunning)) [L202] COND TRUE \read(systemActive) [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L224] int tmp ; [L227] COND TRUE ! pumpRunning [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L167] int retValue_acc ; [L170] COND TRUE waterLevel < 2 [L171] retValue_acc = 1 [L172] return (retValue_acc); [L353] tmp = isHighWaterSensorDry() [L355] COND TRUE \read(tmp) [L356] tmp___0 = 0 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L229] tmp = isHighWaterLevel() [L231] COND FALSE !(\read(tmp)) [L921] int tmp ; [L922] int tmp___0 ; [L923] int tmp___1 ; [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); [L927] tmp = isMethaneLevelCritical() [L929] COND FALSE !(\read(tmp)) [L158] int retValue_acc ; [L161] retValue_acc = waterLevel [L162] return (retValue_acc); [L933] tmp___0 = getWaterLevel() [L935] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:12:02,795 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...