./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product29.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad863e5106000f30252d9c1afd738f380ee45fc2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:26:08,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:26:08,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:26:08,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:26:08,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:26:08,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:26:08,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:26:08,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:26:08,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:26:08,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:26:08,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:26:08,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:26:08,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:26:08,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:26:08,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:26:08,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:26:08,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:26:08,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:26:08,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:26:08,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:26:08,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:26:08,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:26:08,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:26:08,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:26:08,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:26:08,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:26:08,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:26:08,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:26:08,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:26:08,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:26:08,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:26:08,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:26:08,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:26:08,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:26:08,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:26:08,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:26:08,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:26:08,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:26:08,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:26:08,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:26:08,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:26:08,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:26:08,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:26:08,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:26:08,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:26:08,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:26:08,530 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:26:08,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:26:08,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:26:08,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:26:08,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:26:08,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:26:08,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:26:08,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:26:08,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:26:08,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:26:08,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:26:08,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:26:08,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:26:08,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:26:08,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:26:08,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:26:08,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:26:08,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:26:08,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:26:08,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:26:08,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:26:08,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:26:08,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:26:08,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:26:08,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:26:08,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad863e5106000f30252d9c1afd738f380ee45fc2 [2020-11-29 22:26:08,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:26:08,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:26:08,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:26:08,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:26:08,885 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:26:08,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product29.cil.c [2020-11-29 22:26:08,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/data/e521fcdbc/8f79fcccf02b4cccb8c2a55e8d80dacb/FLAG9162c3a7a [2020-11-29 22:26:09,488 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:26:09,489 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/sv-benchmarks/c/product-lines/minepump_spec4_product29.cil.c [2020-11-29 22:26:09,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/data/e521fcdbc/8f79fcccf02b4cccb8c2a55e8d80dacb/FLAG9162c3a7a [2020-11-29 22:26:09,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/data/e521fcdbc/8f79fcccf02b4cccb8c2a55e8d80dacb [2020-11-29 22:26:09,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:26:09,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:26:09,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:26:09,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:26:09,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:26:09,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:26:09" (1/1) ... [2020-11-29 22:26:09,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfa8484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:09, skipping insertion in model container [2020-11-29 22:26:09,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:26:09" (1/1) ... [2020-11-29 22:26:09,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:26:09,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:26:10,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:26:10,262 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:26:10,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:26:10,429 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:26:10,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10 WrapperNode [2020-11-29 22:26:10,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:26:10,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:26:10,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:26:10,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:26:10,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:26:10,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:26:10,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:26:10,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:26:10,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... [2020-11-29 22:26:10,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:26:10,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:26:10,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:26:10,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:26:10,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:26:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:26:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:26:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:26:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:26:11,562 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:26:11,565 INFO L298 CfgBuilder]: Removed 162 assume(true) statements. [2020-11-29 22:26:11,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:26:11 BoogieIcfgContainer [2020-11-29 22:26:11,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:26:11,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:26:11,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:26:11,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:26:11,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:26:09" (1/3) ... [2020-11-29 22:26:11,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1970a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:26:11, skipping insertion in model container [2020-11-29 22:26:11,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:26:10" (2/3) ... [2020-11-29 22:26:11,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1970a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:26:11, skipping insertion in model container [2020-11-29 22:26:11,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:26:11" (3/3) ... [2020-11-29 22:26:11,579 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product29.cil.c [2020-11-29 22:26:11,590 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:26:11,595 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 22:26:11,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 22:26:11,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:26:11,631 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:26:11,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:26:11,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:26:11,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:26:11,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:26:11,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:26:11,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:26:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-11-29 22:26:11,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:26:11,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:11,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:11,653 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:26:11,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:11,657 INFO L82 PathProgramCache]: Analyzing trace with hash -965693148, now seen corresponding path program 1 times [2020-11-29 22:26:11,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:11,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864442204] [2020-11-29 22:26:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:26:12,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864442204] [2020-11-29 22:26:12,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:26:12,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:26:12,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720931409] [2020-11-29 22:26:12,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:26:12,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:26:12,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:26:12,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:26:12,027 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 2 states. [2020-11-29 22:26:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:26:12,077 INFO L93 Difference]: Finished difference Result 207 states and 308 transitions. [2020-11-29 22:26:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:26:12,078 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-29 22:26:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:26:12,100 INFO L225 Difference]: With dead ends: 207 [2020-11-29 22:26:12,103 INFO L226 Difference]: Without dead ends: 101 [2020-11-29 22:26:12,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:26:12,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-29 22:26:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-11-29 22:26:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 22:26:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 144 transitions. [2020-11-29 22:26:12,160 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 144 transitions. Word has length 16 [2020-11-29 22:26:12,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:26:12,161 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 144 transitions. [2020-11-29 22:26:12,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:26:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 144 transitions. [2020-11-29 22:26:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:26:12,165 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:12,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:12,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:26:12,166 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:26:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:12,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2012450045, now seen corresponding path program 1 times [2020-11-29 22:26:12,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:12,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944563119] [2020-11-29 22:26:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:26:12,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944563119] [2020-11-29 22:26:12,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:26:12,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:26:12,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142607929] [2020-11-29 22:26:12,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:26:12,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:26:12,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:26:12,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:26:12,335 INFO L87 Difference]: Start difference. First operand 101 states and 144 transitions. Second operand 3 states. [2020-11-29 22:26:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:26:12,348 INFO L93 Difference]: Finished difference Result 101 states and 144 transitions. [2020-11-29 22:26:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:26:12,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 22:26:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:26:12,350 INFO L225 Difference]: With dead ends: 101 [2020-11-29 22:26:12,350 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 22:26:12,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:26:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 22:26:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-29 22:26:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 22:26:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions. [2020-11-29 22:26:12,356 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 17 [2020-11-29 22:26:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:26:12,357 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions. [2020-11-29 22:26:12,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:26:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2020-11-29 22:26:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:26:12,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:12,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:12,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:26:12,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:26:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1301096006, now seen corresponding path program 1 times [2020-11-29 22:26:12,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:12,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629312075] [2020-11-29 22:26:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:26:12,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629312075] [2020-11-29 22:26:12,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:26:12,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:26:12,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041395871] [2020-11-29 22:26:12,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:26:12,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:26:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:26:12,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:26:12,503 INFO L87 Difference]: Start difference. First operand 43 states and 61 transitions. Second operand 6 states. [2020-11-29 22:26:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:26:12,760 INFO L93 Difference]: Finished difference Result 80 states and 116 transitions. [2020-11-29 22:26:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:26:12,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 22:26:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:26:12,764 INFO L225 Difference]: With dead ends: 80 [2020-11-29 22:26:12,764 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 22:26:12,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:26:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 22:26:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-29 22:26:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 22:26:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2020-11-29 22:26:12,770 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 22 [2020-11-29 22:26:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:26:12,770 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2020-11-29 22:26:12,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:26:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2020-11-29 22:26:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:26:12,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:12,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:12,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:26:12,772 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:26:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1386148968, now seen corresponding path program 1 times [2020-11-29 22:26:12,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:12,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123906454] [2020-11-29 22:26:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:26:12,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123906454] [2020-11-29 22:26:12,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:26:12,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 22:26:12,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635612545] [2020-11-29 22:26:12,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:26:12,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:26:12,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:26:12,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:26:12,951 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand 8 states. [2020-11-29 22:26:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:26:13,508 INFO L93 Difference]: Finished difference Result 286 states and 428 transitions. [2020-11-29 22:26:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:26:13,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-11-29 22:26:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:26:13,512 INFO L225 Difference]: With dead ends: 286 [2020-11-29 22:26:13,512 INFO L226 Difference]: Without dead ends: 249 [2020-11-29 22:26:13,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:26:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-11-29 22:26:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 108. [2020-11-29 22:26:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-29 22:26:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 154 transitions. [2020-11-29 22:26:13,535 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 154 transitions. Word has length 24 [2020-11-29 22:26:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:26:13,535 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 154 transitions. [2020-11-29 22:26:13,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:26:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 154 transitions. [2020-11-29 22:26:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:26:13,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:13,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:13,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:26:13,537 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:26:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:13,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1240528407, now seen corresponding path program 1 times [2020-11-29 22:26:13,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:13,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070774423] [2020-11-29 22:26:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:26:13,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070774423] [2020-11-29 22:26:13,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:26:13,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:26:13,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429465681] [2020-11-29 22:26:13,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:26:13,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:26:13,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:26:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:26:13,586 INFO L87 Difference]: Start difference. First operand 108 states and 154 transitions. Second operand 3 states. [2020-11-29 22:26:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:26:13,599 INFO L93 Difference]: Finished difference Result 165 states and 237 transitions. [2020-11-29 22:26:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:26:13,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 22:26:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:26:13,606 INFO L225 Difference]: With dead ends: 165 [2020-11-29 22:26:13,607 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 22:26:13,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:26:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 22:26:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-29 22:26:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 22:26:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-11-29 22:26:13,631 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 25 [2020-11-29 22:26:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:26:13,631 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-11-29 22:26:13,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:26:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-11-29 22:26:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 22:26:13,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:26:13,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:26:13,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:26:13,634 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:26:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:26:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash -179143526, now seen corresponding path program 1 times [2020-11-29 22:26:13,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:26:13,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692264948] [2020-11-29 22:26:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:26:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:26:13,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692264948] [2020-11-29 22:26:13,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133989509] [2020-11-29 22:26:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:26:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:26:13,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:26:13,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:26:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:26:13,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:26:13,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-11-29 22:26:13,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073292927] [2020-11-29 22:26:13,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:26:13,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:26:13,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:26:13,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:26:13,970 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 4 states. [2020-11-29 22:26:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:26:14,048 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2020-11-29 22:26:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:26:14,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-11-29 22:26:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:26:14,049 INFO L225 Difference]: With dead ends: 81 [2020-11-29 22:26:14,049 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:26:14,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:26:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:26:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:26:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:26:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:26:14,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-11-29 22:26:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:26:14,051 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:26:14,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:26:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:26:14,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:26:14,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 22:26:14,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:26:14,503 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2020-11-29 22:26:14,822 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 22:26:14,822 INFO L270 CegarLoopResult]: At program point L630(lines 629 648) the Hoare annotation is: (and (= ULTIMATE.start_main_~tmp~8 ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~systemActive~0) (= 1 ~systemActive~0) (= ~pumpRunning~0 0) (= ULTIMATE.start_test_~splverifierCounter~0 0) (<= 1 ~waterLevel~0)) [2020-11-29 22:26:14,822 INFO L274 CegarLoopResult]: For program point L630-1(lines 630 636) no Hoare annotation was computed. [2020-11-29 22:26:14,822 INFO L270 CegarLoopResult]: At program point L630-2(lines 629 648) the Hoare annotation is: false [2020-11-29 22:26:14,822 INFO L270 CegarLoopResult]: At program point L630-3(lines 629 648) the Hoare annotation is: false [2020-11-29 22:26:14,822 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 22:26:14,822 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L270 CegarLoopResult]: At program point L829-2(lines 829 843) the Hoare annotation is: false [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L830(line 830) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L666(lines 666 674) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L666-1(lines 666 674) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L666-2(lines 666 674) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L666-3(lines 666 674) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L666-4(lines 666 674) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L666-5(lines 666 674) no Hoare annotation was computed. [2020-11-29 22:26:14,823 INFO L274 CegarLoopResult]: For program point L535(lines 535 541) no Hoare annotation was computed. [2020-11-29 22:26:14,824 INFO L270 CegarLoopResult]: At program point L535-1(lines 535 541) the Hoare annotation is: (and (= ULTIMATE.start_main_~tmp~8 ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~systemActive~0) (= 1 ~systemActive~0) (= ~pumpRunning~0 0) (= ULTIMATE.start_test_~splverifierCounter~0 0) (<= 1 ~waterLevel~0)) [2020-11-29 22:26:14,824 INFO L274 CegarLoopResult]: For program point L833(lines 833 837) no Hoare annotation was computed. [2020-11-29 22:26:14,824 INFO L274 CegarLoopResult]: For program point L833-1(lines 630 636) no Hoare annotation was computed. [2020-11-29 22:26:14,824 INFO L274 CegarLoopResult]: For program point L900(lines 900 907) no Hoare annotation was computed. [2020-11-29 22:26:14,824 INFO L277 CegarLoopResult]: At program point L900-1(lines 900 907) the Hoare annotation is: true [2020-11-29 22:26:14,826 INFO L270 CegarLoopResult]: At program point L637(lines 637 643) the Hoare annotation is: (and (= ULTIMATE.start_main_~tmp~8 ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~systemActive~0) (= 1 ~systemActive~0) (= ~pumpRunning~0 0) (= ULTIMATE.start_test_~splverifierCounter~0 0) (<= 1 ~waterLevel~0)) [2020-11-29 22:26:14,826 INFO L270 CegarLoopResult]: At program point L637-1(lines 637 643) the Hoare annotation is: false [2020-11-29 22:26:14,826 INFO L270 CegarLoopResult]: At program point L571(lines 524 572) the Hoare annotation is: false [2020-11-29 22:26:14,826 INFO L270 CegarLoopResult]: At program point L637-2(lines 637 643) the Hoare annotation is: false [2020-11-29 22:26:14,826 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 22:26:14,826 INFO L274 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-11-29 22:26:14,827 INFO L274 CegarLoopResult]: For program point L142-1(line 142) no Hoare annotation was computed. [2020-11-29 22:26:14,827 INFO L274 CegarLoopResult]: For program point L142-2(line 142) no Hoare annotation was computed. [2020-11-29 22:26:14,827 INFO L270 CegarLoopResult]: At program point L605(lines 1 938) the Hoare annotation is: (and (= ~waterLevel~0 1) (= 1 ~systemActive~0) (= ~pumpRunning~0 0)) [2020-11-29 22:26:14,827 INFO L274 CegarLoopResult]: For program point L79(lines 79 83) no Hoare annotation was computed. [2020-11-29 22:26:14,827 INFO L274 CegarLoopResult]: For program point L807(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,827 INFO L274 CegarLoopResult]: For program point L807-2(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,828 INFO L274 CegarLoopResult]: For program point L807-3(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,828 INFO L274 CegarLoopResult]: For program point L807-5(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,828 INFO L274 CegarLoopResult]: For program point L807-6(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,828 INFO L274 CegarLoopResult]: For program point L807-8(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,829 INFO L274 CegarLoopResult]: For program point L807-9(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,829 INFO L274 CegarLoopResult]: For program point L807-11(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,829 INFO L274 CegarLoopResult]: For program point L807-12(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,830 INFO L274 CegarLoopResult]: For program point L807-14(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,831 INFO L274 CegarLoopResult]: For program point L807-15(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,831 INFO L274 CegarLoopResult]: For program point L807-17(lines 807 811) no Hoare annotation was computed. [2020-11-29 22:26:14,831 INFO L274 CegarLoopResult]: For program point L545(lines 545 551) no Hoare annotation was computed. [2020-11-29 22:26:14,831 INFO L270 CegarLoopResult]: At program point L545-1(lines 545 551) the Hoare annotation is: (and (= ULTIMATE.start_main_~tmp~8 ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~systemActive~0) (= 1 ~systemActive~0) (= ~pumpRunning~0 0) (= ULTIMATE.start_test_~splverifierCounter~0 0) (<= 1 ~waterLevel~0)) [2020-11-29 22:26:14,832 INFO L277 CegarLoopResult]: At program point L909(lines 890 912) the Hoare annotation is: true [2020-11-29 22:26:14,832 INFO L270 CegarLoopResult]: At program point L877(lines 873 879) the Hoare annotation is: (and (= ULTIMATE.start_main_~tmp~8 ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~waterLevel~0) (= 1 ~systemActive~0) (= ~pumpRunning~0 0)) [2020-11-29 22:26:14,832 INFO L270 CegarLoopResult]: At program point L613(lines 608 616) the Hoare annotation is: (and (= |ULTIMATE.start_valid_product_#res| ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~waterLevel~0) (= 1 ~systemActive~0) (= ~pumpRunning~0 0)) [2020-11-29 22:26:14,832 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:26:14,832 INFO L270 CegarLoopResult]: At program point L813(lines 798 816) the Hoare annotation is: false [2020-11-29 22:26:14,832 INFO L270 CegarLoopResult]: At program point L813-1(lines 798 816) the Hoare annotation is: false [2020-11-29 22:26:14,833 INFO L270 CegarLoopResult]: At program point L813-2(lines 798 816) the Hoare annotation is: false [2020-11-29 22:26:14,833 INFO L270 CegarLoopResult]: At program point L813-3(lines 798 816) the Hoare annotation is: false [2020-11-29 22:26:14,833 INFO L270 CegarLoopResult]: At program point L813-4(lines 798 816) the Hoare annotation is: false [2020-11-29 22:26:14,833 INFO L270 CegarLoopResult]: At program point L813-5(lines 798 816) the Hoare annotation is: false [2020-11-29 22:26:14,833 INFO L274 CegarLoopResult]: For program point L55(lines 55 59) no Hoare annotation was computed. [2020-11-29 22:26:14,833 INFO L274 CegarLoopResult]: For program point L55-3(lines 55 59) no Hoare annotation was computed. [2020-11-29 22:26:14,833 INFO L274 CegarLoopResult]: For program point L55-6(lines 55 59) no Hoare annotation was computed. [2020-11-29 22:26:14,834 INFO L270 CegarLoopResult]: At program point L749(lines 742 752) the Hoare annotation is: false [2020-11-29 22:26:14,834 INFO L270 CegarLoopResult]: At program point L749-1(lines 742 752) the Hoare annotation is: false [2020-11-29 22:26:14,834 INFO L270 CegarLoopResult]: At program point L749-2(lines 742 752) the Hoare annotation is: false [2020-11-29 22:26:14,834 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:26:14,834 INFO L270 CegarLoopResult]: At program point L124(lines 119 127) the Hoare annotation is: (and (not (= |ULTIMATE.start_getWaterLevel_#res| 0)) (= ULTIMATE.start_main_~tmp~8 ~systemActive~0) (= |ULTIMATE.start_valid_product_#res| ~systemActive~0) (= 1 ~systemActive~0) (= ~pumpRunning~0 0) (= ULTIMATE.start_test_~splverifierCounter~0 0) (<= 1 ~waterLevel~0)) [2020-11-29 22:26:14,834 INFO L270 CegarLoopResult]: At program point L124-1(lines 119 127) the Hoare annotation is: false [2020-11-29 22:26:14,835 INFO L270 CegarLoopResult]: At program point L124-2(lines 119 127) the Hoare annotation is: false [2020-11-29 22:26:14,835 INFO L270 CegarLoopResult]: At program point L92(lines 87 95) the Hoare annotation is: false [2020-11-29 22:26:14,835 INFO L270 CegarLoopResult]: At program point L92-1(lines 87 95) the Hoare annotation is: false [2020-11-29 22:26:14,835 INFO L270 CegarLoopResult]: At program point L92-2(lines 87 95) the Hoare annotation is: false [2020-11-29 22:26:14,835 INFO L274 CegarLoopResult]: For program point L555(lines 555 566) no Hoare annotation was computed. [2020-11-29 22:26:14,835 INFO L274 CegarLoopResult]: For program point L688(lines 688 705) no Hoare annotation was computed. [2020-11-29 22:26:14,836 INFO L274 CegarLoopResult]: For program point L688-1(lines 688 705) no Hoare annotation was computed. [2020-11-29 22:26:14,836 INFO L274 CegarLoopResult]: For program point L688-2(lines 688 705) no Hoare annotation was computed. [2020-11-29 22:26:14,836 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:26:14,836 INFO L274 CegarLoopResult]: For program point L922(lines 922 935) no Hoare annotation was computed. [2020-11-29 22:26:14,836 INFO L270 CegarLoopResult]: At program point L922-1(lines 1 938) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~8 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_valid_product_#res| ~systemActive~0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (= ULTIMATE.start_test_~splverifierCounter~0 0))) (or (and .cse0 .cse1 (= |ULTIMATE.start_valid_product_#res| ~waterLevel~0) .cse2 .cse3 .cse4) (and (not (= |ULTIMATE.start_getWaterLevel_#res| 0)) (not (= ULTIMATE.start___utac_acc__Specification4_spec__1_~tmp~9 0)) .cse0 .cse1 .cse2 (<= 2 ~waterLevel~0) .cse3 .cse4))) [2020-11-29 22:26:14,836 INFO L274 CegarLoopResult]: For program point L922-2(lines 922 935) no Hoare annotation was computed. [2020-11-29 22:26:14,837 INFO L270 CegarLoopResult]: At program point L922-3(lines 1 938) the Hoare annotation is: false [2020-11-29 22:26:14,837 INFO L274 CegarLoopResult]: For program point L922-4(lines 922 935) no Hoare annotation was computed. [2020-11-29 22:26:14,838 INFO L270 CegarLoopResult]: At program point L922-5(lines 1 938) the Hoare annotation is: false [2020-11-29 22:26:14,838 INFO L274 CegarLoopResult]: For program point L526(lines 525 570) no Hoare annotation was computed. [2020-11-29 22:26:14,838 INFO L270 CegarLoopResult]: At program point L758(lines 753 761) the Hoare annotation is: false [2020-11-29 22:26:14,838 INFO L270 CegarLoopResult]: At program point L758-1(lines 753 761) the Hoare annotation is: false [2020-11-29 22:26:14,838 INFO L274 CegarLoopResult]: For program point L692(lines 692 700) no Hoare annotation was computed. [2020-11-29 22:26:14,838 INFO L270 CegarLoopResult]: At program point L758-2(lines 753 761) the Hoare annotation is: false [2020-11-29 22:26:14,839 INFO L274 CegarLoopResult]: For program point L692-1(lines 692 700) no Hoare annotation was computed. [2020-11-29 22:26:14,839 INFO L274 CegarLoopResult]: For program point L692-2(lines 692 700) no Hoare annotation was computed. [2020-11-29 22:26:14,839 INFO L274 CegarLoopResult]: For program point L527(lines 527 531) no Hoare annotation was computed. [2020-11-29 22:26:14,839 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:26:14,839 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 22:26:14,839 INFO L274 CegarLoopResult]: For program point L561(lines 561 565) no Hoare annotation was computed. [2020-11-29 22:26:14,839 INFO L274 CegarLoopResult]: For program point L561-2(lines 630 636) no Hoare annotation was computed. [2020-11-29 22:26:14,840 INFO L270 CegarLoopResult]: At program point L133(lines 128 136) the Hoare annotation is: false [2020-11-29 22:26:14,840 INFO L270 CegarLoopResult]: At program point L133-1(lines 128 136) the Hoare annotation is: false [2020-11-29 22:26:14,840 INFO L274 CegarLoopResult]: For program point L67(lines 67 71) no Hoare annotation was computed. [2020-11-29 22:26:14,840 INFO L270 CegarLoopResult]: At program point L133-2(lines 128 136) the Hoare annotation is: false [2020-11-29 22:26:14,840 INFO L270 CegarLoopResult]: At program point L133-3(lines 128 136) the Hoare annotation is: false [2020-11-29 22:26:14,840 INFO L270 CegarLoopResult]: At program point L133-4(lines 128 136) the Hoare annotation is: false [2020-11-29 22:26:14,841 INFO L270 CegarLoopResult]: At program point L133-5(lines 128 136) the Hoare annotation is: false [2020-11-29 22:26:14,841 INFO L274 CegarLoopResult]: For program point L926(lines 926 932) no Hoare annotation was computed. [2020-11-29 22:26:14,841 INFO L274 CegarLoopResult]: For program point L926-2(lines 926 932) no Hoare annotation was computed. [2020-11-29 22:26:14,842 INFO L274 CegarLoopResult]: For program point L926-4(lines 926 932) no Hoare annotation was computed. [2020-11-29 22:26:14,842 INFO L274 CegarLoopResult]: For program point L662(lines 662 679) no Hoare annotation was computed. [2020-11-29 22:26:14,842 INFO L274 CegarLoopResult]: For program point L662-1(lines 662 679) no Hoare annotation was computed. [2020-11-29 22:26:14,842 INFO L274 CegarLoopResult]: For program point L662-2(lines 662 679) no Hoare annotation was computed. [2020-11-29 22:26:14,842 INFO L274 CegarLoopResult]: For program point L662-3(lines 662 679) no Hoare annotation was computed. [2020-11-29 22:26:14,842 INFO L274 CegarLoopResult]: For program point L662-4(lines 662 679) no Hoare annotation was computed. [2020-11-29 22:26:14,842 INFO L274 CegarLoopResult]: For program point L662-5(lines 662 679) no Hoare annotation was computed. [2020-11-29 22:26:14,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:26:14 BoogieIcfgContainer [2020-11-29 22:26:14,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:26:14,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:26:14,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:26:14,884 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:26:14,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:26:11" (3/4) ... [2020-11-29 22:26:14,889 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:26:14,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2020-11-29 22:26:14,914 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-29 22:26:14,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-29 22:26:14,917 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 22:26:14,917 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 22:26:14,918 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:26:14,919 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:26:14,948 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == systemActive && \result == waterLevel) && 1 == systemActive) && pumpRunning == 0 [2020-11-29 22:26:14,949 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((tmp == systemActive && \result == systemActive) && \result == waterLevel) && 1 == systemActive) && pumpRunning == 0 [2020-11-29 22:26:14,949 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((tmp == systemActive && \result == systemActive) && \result == waterLevel) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) || (((((((!(\result == 0) && !(tmp == 0)) && tmp == systemActive) && \result == systemActive) && 1 == systemActive) && 2 <= waterLevel) && pumpRunning == 0) && splverifierCounter == 0) [2020-11-29 22:26:14,950 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel [2020-11-29 22:26:14,952 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel [2020-11-29 22:26:14,955 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel [2020-11-29 22:26:14,956 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel [2020-11-29 22:26:14,958 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\result == 0) && tmp == systemActive) && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel [2020-11-29 22:26:15,060 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f82d027-f694-40b0-affc-1f57175e20bd/bin/uautomizer/witness.graphml [2020-11-29 22:26:15,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:26:15,062 INFO L168 Benchmark]: Toolchain (without parser) took 5264.69 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 66.8 MB in the beginning and 55.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 63.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:15,062 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 50.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:26:15,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.57 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.5 MB in the beginning and 79.5 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:15,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.93 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 76.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:15,064 INFO L168 Benchmark]: Boogie Preprocessor took 76.32 ms. Allocated memory is still 113.2 MB. Free memory was 76.2 MB in the beginning and 73.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:15,064 INFO L168 Benchmark]: RCFGBuilder took 980.59 ms. Allocated memory is still 113.2 MB. Free memory was 73.3 MB in the beginning and 59.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:15,065 INFO L168 Benchmark]: TraceAbstraction took 3307.57 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 58.8 MB in the beginning and 65.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:15,065 INFO L168 Benchmark]: Witness Printer took 180.42 ms. Allocated memory is still 148.9 MB. Free memory was 65.3 MB in the beginning and 55.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:26:15,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 50.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 631.57 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.5 MB in the beginning and 79.5 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.93 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 76.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.32 ms. Allocated memory is still 113.2 MB. Free memory was 76.2 MB in the beginning and 73.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 980.59 ms. Allocated memory is still 113.2 MB. Free memory was 73.3 MB in the beginning and 59.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3307.57 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 58.8 MB in the beginning and 65.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * Witness Printer took 180.42 ms. Allocated memory is still 148.9 MB. Free memory was 65.3 MB in the beginning and 55.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 873]: Loop Invariant Derived loop invariant: (((tmp == systemActive && \result == systemActive) && \result == waterLevel) && 1 == systemActive) && pumpRunning == 0 - InvariantResult [Line: 742]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 798]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((!(\result == 0) && tmp == systemActive) && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel - InvariantResult [Line: 742]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 798]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 535]: Loop Invariant Derived loop invariant: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel - InvariantResult [Line: 753]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 798]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 742]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 753]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 798]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (waterLevel == 1 && 1 == systemActive) && pumpRunning == 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((((tmp == systemActive && \result == systemActive) && \result == waterLevel) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) || (((((((!(\result == 0) && !(tmp == 0)) && tmp == systemActive) && \result == systemActive) && 1 == systemActive) && 2 <= waterLevel) && pumpRunning == 0) && splverifierCounter == 0) - InvariantResult [Line: 900]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 545]: Loop Invariant Derived loop invariant: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 753]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 798]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 798]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 637]: Loop Invariant Derived loop invariant: ((((tmp == systemActive && \result == systemActive) && 1 == systemActive) && pumpRunning == 0) && splverifierCounter == 0) && 1 <= waterLevel - InvariantResult [Line: 637]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 524]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 637]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 829]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 608]: Loop Invariant Derived loop invariant: ((\result == systemActive && \result == waterLevel) && 1 == systemActive) && pumpRunning == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 108 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 434 SDtfs, 776 SDslu, 532 SDs, 0 SdLazy, 116 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 141 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 42 PreInvPairs, 56 NumberOfFragments, 218 HoareAnnotationTreeSize, 42 FomulaSimplifications, 352 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 42 FomulaSimplificationsInter, 200 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 12272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 27/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...