./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product50.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_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/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 4003051e8c7e84d7a7481775cdc05def8cb96ed2 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:15:41,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:15:41,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:15:41,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:15:41,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:15:41,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:15:41,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:15:41,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:15:41,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:15:41,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:15:41,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:15:41,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:15:41,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:15:41,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:15:41,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:15:41,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:15:41,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:15:41,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:15:41,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:15:41,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:15:41,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:15:41,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:15:41,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:15:41,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:15:41,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:15:41,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:15:41,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:15:41,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:15:41,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:15:41,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:15:41,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:15:41,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:15:41,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:15:41,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:15:41,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:15:41,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:15:41,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:15:41,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:15:41,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:15:41,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:15:41,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:15:41,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:15:41,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:15:41,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:15:41,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:15:41,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:15:41,889 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:15:41,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:15:41,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:15:41,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:15:41,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:15:41,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:15:41,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:15:41,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:15:41,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:15:41,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:15:41,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:15:41,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:15:41,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:15:41,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:15:41,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:15:41,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:15:41,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:15:41,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:15:41,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:15:41,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:15:41,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:15:41,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:15:41,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:15:41,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:15:41,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:15:41,898 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_69988c31-4113-4592-8dac-3f2888dc0056/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4003051e8c7e84d7a7481775cdc05def8cb96ed2 [2020-11-30 00:15:42,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:15:42,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:15:42,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:15:42,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:15:42,363 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:15:42,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c [2020-11-30 00:15:42,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/data/6923bdf2b/6a16596435624825840288cdb85c08f8/FLAG47c047ff7 [2020-11-30 00:15:43,273 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:15:43,274 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c [2020-11-30 00:15:43,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/data/6923bdf2b/6a16596435624825840288cdb85c08f8/FLAG47c047ff7 [2020-11-30 00:15:43,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/data/6923bdf2b/6a16596435624825840288cdb85c08f8 [2020-11-30 00:15:43,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:15:43,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:15:43,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:43,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:15:43,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:15:43,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:43" (1/1) ... [2020-11-30 00:15:43,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb469ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:43, skipping insertion in model container [2020-11-30 00:15:43,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:43" (1/1) ... [2020-11-30 00:15:43,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:15:43,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:15:44,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:44,040 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:15:44,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:44,202 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:15:44,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44 WrapperNode [2020-11-30 00:15:44,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:44,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:44,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:15:44,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:15:44,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:44,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:15:44,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:15:44,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:15:44,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... [2020-11-30 00:15:44,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:15:44,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:15:44,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:15:44,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:15:44,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/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 [2020-11-30 00:15:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:15:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:15:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:15:44,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:15:46,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:15:46,152 INFO L298 CfgBuilder]: Removed 178 assume(true) statements. [2020-11-30 00:15:46,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:46 BoogieIcfgContainer [2020-11-30 00:15:46,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:15:46,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:15:46,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:15:46,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:15:46,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:15:43" (1/3) ... [2020-11-30 00:15:46,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22854095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:46, skipping insertion in model container [2020-11-30 00:15:46,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:44" (2/3) ... [2020-11-30 00:15:46,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22854095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:46, skipping insertion in model container [2020-11-30 00:15:46,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:46" (3/3) ... [2020-11-30 00:15:46,170 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2020-11-30 00:15:46,185 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:15:46,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:15:46,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:15:46,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:15:46,254 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:15:46,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:15:46,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:15:46,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:15:46,254 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:15:46,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:15:46,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:15:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-11-30 00:15:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:15:46,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:46,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:46,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:46,308 INFO L82 PathProgramCache]: Analyzing trace with hash 869328451, now seen corresponding path program 1 times [2020-11-30 00:15:46,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:46,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23574975] [2020-11-30 00:15:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:46,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23574975] [2020-11-30 00:15:46,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:46,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:15:46,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430949249] [2020-11-30 00:15:46,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:15:46,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:46,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:15:46,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:15:46,738 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2020-11-30 00:15:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:46,781 INFO L93 Difference]: Finished difference Result 248 states and 373 transitions. [2020-11-30 00:15:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:15:46,784 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-11-30 00:15:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:46,803 INFO L225 Difference]: With dead ends: 248 [2020-11-30 00:15:46,803 INFO L226 Difference]: Without dead ends: 122 [2020-11-30 00:15:46,817 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 [2020-11-30 00:15:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-30 00:15:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-30 00:15:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-30 00:15:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 177 transitions. [2020-11-30 00:15:46,911 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 177 transitions. Word has length 19 [2020-11-30 00:15:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:46,917 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 177 transitions. [2020-11-30 00:15:46,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:15:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 177 transitions. [2020-11-30 00:15:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:15:46,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:46,923 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] [2020-11-30 00:15:46,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:15:46,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1619619292, now seen corresponding path program 1 times [2020-11-30 00:15:46,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:46,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699149727] [2020-11-30 00:15:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:47,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699149727] [2020-11-30 00:15:47,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:47,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:15:47,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434341294] [2020-11-30 00:15:47,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:15:47,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:47,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:15:47,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:15:47,131 INFO L87 Difference]: Start difference. First operand 122 states and 177 transitions. Second operand 3 states. [2020-11-30 00:15:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:47,161 INFO L93 Difference]: Finished difference Result 122 states and 177 transitions. [2020-11-30 00:15:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:15:47,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-30 00:15:47,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:47,170 INFO L225 Difference]: With dead ends: 122 [2020-11-30 00:15:47,171 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 00:15:47,173 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 [2020-11-30 00:15:47,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 00:15:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-30 00:15:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 00:15:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-11-30 00:15:47,181 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 20 [2020-11-30 00:15:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:47,182 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-11-30 00:15:47,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:15:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-11-30 00:15:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:15:47,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:47,187 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, 1] [2020-11-30 00:15:47,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:15:47,188 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1983331463, now seen corresponding path program 1 times [2020-11-30 00:15:47,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:47,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47667166] [2020-11-30 00:15:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:47,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47667166] [2020-11-30 00:15:47,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:47,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:15:47,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239559050] [2020-11-30 00:15:47,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:15:47,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:47,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:15:47,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:15:47,397 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 5 states. [2020-11-30 00:15:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:47,499 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2020-11-30 00:15:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:15:47,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-30 00:15:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:47,509 INFO L225 Difference]: With dead ends: 95 [2020-11-30 00:15:47,509 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 00:15:47,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:15:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 00:15:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-30 00:15:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 00:15:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-11-30 00:15:47,523 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 26 [2020-11-30 00:15:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:47,524 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-11-30 00:15:47,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:15:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-11-30 00:15:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:15:47,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:47,526 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, 1, 1, 1] [2020-11-30 00:15:47,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:15:47,527 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash -630940105, now seen corresponding path program 1 times [2020-11-30 00:15:47,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:47,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799419421] [2020-11-30 00:15:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:47,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799419421] [2020-11-30 00:15:47,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:47,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:15:47,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409227264] [2020-11-30 00:15:47,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:15:47,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:47,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:15:47,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:15:47,627 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-11-30 00:15:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:47,720 INFO L93 Difference]: Finished difference Result 119 states and 171 transitions. [2020-11-30 00:15:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:15:47,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-30 00:15:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:47,723 INFO L225 Difference]: With dead ends: 119 [2020-11-30 00:15:47,723 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 00:15:47,724 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 [2020-11-30 00:15:47,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 00:15:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-11-30 00:15:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 00:15:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2020-11-30 00:15:47,737 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 28 [2020-11-30 00:15:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:47,738 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2020-11-30 00:15:47,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:15:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2020-11-30 00:15:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:15:47,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:47,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:47,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:15:47,741 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash -351362712, now seen corresponding path program 1 times [2020-11-30 00:15:47,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:47,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73646464] [2020-11-30 00:15:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:48,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73646464] [2020-11-30 00:15:48,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:48,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:15:48,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483210624] [2020-11-30 00:15:48,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:15:48,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:48,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:15:48,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:15:48,214 INFO L87 Difference]: Start difference. First operand 73 states and 102 transitions. Second operand 6 states. [2020-11-30 00:15:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:48,420 INFO L93 Difference]: Finished difference Result 263 states and 373 transitions. [2020-11-30 00:15:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:15:48,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-11-30 00:15:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:48,424 INFO L225 Difference]: With dead ends: 263 [2020-11-30 00:15:48,424 INFO L226 Difference]: Without dead ends: 197 [2020-11-30 00:15:48,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:15:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-11-30 00:15:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 77. [2020-11-30 00:15:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-30 00:15:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 106 transitions. [2020-11-30 00:15:48,470 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 106 transitions. Word has length 34 [2020-11-30 00:15:48,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:48,470 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 106 transitions. [2020-11-30 00:15:48,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:15:48,471 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 106 transitions. [2020-11-30 00:15:48,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:15:48,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:48,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:48,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:15:48,473 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:48,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:48,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1052427290, now seen corresponding path program 1 times [2020-11-30 00:15:48,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:48,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053661359] [2020-11-30 00:15:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:48,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053661359] [2020-11-30 00:15:48,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:48,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:15:48,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695455846] [2020-11-30 00:15:48,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:15:48,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:48,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:15:48,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:15:48,631 INFO L87 Difference]: Start difference. First operand 77 states and 106 transitions. Second operand 5 states. [2020-11-30 00:15:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:48,804 INFO L93 Difference]: Finished difference Result 202 states and 278 transitions. [2020-11-30 00:15:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:15:48,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-11-30 00:15:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:48,808 INFO L225 Difference]: With dead ends: 202 [2020-11-30 00:15:48,808 INFO L226 Difference]: Without dead ends: 132 [2020-11-30 00:15:48,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:15:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-30 00:15:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 83. [2020-11-30 00:15:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-30 00:15:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 112 transitions. [2020-11-30 00:15:48,834 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 112 transitions. Word has length 34 [2020-11-30 00:15:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:48,834 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 112 transitions. [2020-11-30 00:15:48,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:15:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 112 transitions. [2020-11-30 00:15:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:15:48,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:48,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:48,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:15:48,838 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:48,839 INFO L82 PathProgramCache]: Analyzing trace with hash -118963581, now seen corresponding path program 1 times [2020-11-30 00:15:48,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:48,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966547053] [2020-11-30 00:15:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:48,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966547053] [2020-11-30 00:15:48,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:48,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:15:48,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731670443] [2020-11-30 00:15:48,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:15:48,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:48,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:15:48,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:15:48,956 INFO L87 Difference]: Start difference. First operand 83 states and 112 transitions. Second operand 5 states. [2020-11-30 00:15:49,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:49,215 INFO L93 Difference]: Finished difference Result 282 states and 383 transitions. [2020-11-30 00:15:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:15:49,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-11-30 00:15:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:49,218 INFO L225 Difference]: With dead ends: 282 [2020-11-30 00:15:49,218 INFO L226 Difference]: Without dead ends: 206 [2020-11-30 00:15:49,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:15:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-30 00:15:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 82. [2020-11-30 00:15:49,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-30 00:15:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 109 transitions. [2020-11-30 00:15:49,254 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 109 transitions. Word has length 34 [2020-11-30 00:15:49,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:49,256 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 109 transitions. [2020-11-30 00:15:49,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:15:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2020-11-30 00:15:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:15:49,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:49,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:49,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:15:49,264 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:49,264 INFO L82 PathProgramCache]: Analyzing trace with hash -938168726, now seen corresponding path program 1 times [2020-11-30 00:15:49,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:49,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636323613] [2020-11-30 00:15:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:49,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636323613] [2020-11-30 00:15:49,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:49,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:15:49,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885480100] [2020-11-30 00:15:49,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:15:49,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:49,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:15:49,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:15:49,350 INFO L87 Difference]: Start difference. First operand 82 states and 109 transitions. Second operand 3 states. [2020-11-30 00:15:49,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:49,411 INFO L93 Difference]: Finished difference Result 185 states and 247 transitions. [2020-11-30 00:15:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:15:49,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-11-30 00:15:49,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:49,414 INFO L225 Difference]: With dead ends: 185 [2020-11-30 00:15:49,415 INFO L226 Difference]: Without dead ends: 110 [2020-11-30 00:15:49,415 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 [2020-11-30 00:15:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-30 00:15:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-11-30 00:15:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-30 00:15:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2020-11-30 00:15:49,443 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 34 [2020-11-30 00:15:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:49,446 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2020-11-30 00:15:49,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:15:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2020-11-30 00:15:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 00:15:49,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:49,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:49,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:15:49,453 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:49,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1960852394, now seen corresponding path program 1 times [2020-11-30 00:15:49,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:49,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63848451] [2020-11-30 00:15:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:49,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63848451] [2020-11-30 00:15:49,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:49,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:15:49,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704874845] [2020-11-30 00:15:49,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:15:49,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:49,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:15:49,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:15:49,703 INFO L87 Difference]: Start difference. First operand 110 states and 143 transitions. Second operand 7 states. [2020-11-30 00:15:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:50,455 INFO L93 Difference]: Finished difference Result 524 states and 703 transitions. [2020-11-30 00:15:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:15:50,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-11-30 00:15:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:50,460 INFO L225 Difference]: With dead ends: 524 [2020-11-30 00:15:50,460 INFO L226 Difference]: Without dead ends: 449 [2020-11-30 00:15:50,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:15:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-11-30 00:15:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 190. [2020-11-30 00:15:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-11-30 00:15:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2020-11-30 00:15:50,513 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 35 [2020-11-30 00:15:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:50,514 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2020-11-30 00:15:50,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:15:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2020-11-30 00:15:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-30 00:15:50,519 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:50,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:50,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:15:50,520 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1013340132, now seen corresponding path program 1 times [2020-11-30 00:15:50,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:50,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71308214] [2020-11-30 00:15:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:50,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71308214] [2020-11-30 00:15:50,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810398427] [2020-11-30 00:15:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/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 [2020-11-30 00:15:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:50,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:15:50,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:51,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:15:51,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-30 00:15:51,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781215382] [2020-11-30 00:15:51,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:15:51,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:51,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:15:51,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:15:51,082 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand 8 states. [2020-11-30 00:15:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:51,599 INFO L93 Difference]: Finished difference Result 434 states and 582 transitions. [2020-11-30 00:15:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:15:51,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-11-30 00:15:51,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:51,602 INFO L225 Difference]: With dead ends: 434 [2020-11-30 00:15:51,603 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:15:51,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:15:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:15:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:15:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:15:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:15:51,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-11-30 00:15:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:51,606 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:15:51,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:15:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:15:51,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:15:51,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 00:15:51,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:15:52,068 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2020-11-30 00:15:52,248 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-11-30 00:15:52,467 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-11-30 00:15:52,582 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-11-30 00:15:52,958 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-11-30 00:15:53,396 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 28 [2020-11-30 00:15:53,648 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-11-30 00:15:54,094 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 28 [2020-11-30 00:15:54,339 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2020-11-30 00:15:54,563 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-11-30 00:15:54,949 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-11-30 00:15:55,370 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 28 [2020-11-30 00:15:55,559 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2020-11-30 00:15:56,084 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 28 [2020-11-30 00:15:56,288 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-11-30 00:15:56,664 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2020-11-30 00:15:56,669 INFO L270 CegarLoopResult]: At program point L894(lines 889 897) the Hoare annotation is: (and (= ~waterLevel~0 1) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 0) (= |ULTIMATE.start_valid_product_#res| 1)) [2020-11-30 00:15:56,669 INFO L270 CegarLoopResult]: At program point L828(lines 74 80) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (not (= 0 ~systemActive~0))) (.cse2 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse3 (<= ~waterLevel~0 2)) (.cse4 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_isPumpRunning_#res| 0) (= ~pumpRunning~0 0) .cse2 .cse3 .cse4) (and (= ~switchedOnBeforeTS~0 1) .cse0 (= ~pumpRunning~0 1) .cse1 .cse2 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse3 .cse4))) [2020-11-30 00:15:56,669 INFO L270 CegarLoopResult]: At program point L828-1(lines 74 80) the Hoare annotation is: false [2020-11-30 00:15:56,669 INFO L270 CegarLoopResult]: At program point L828-2(lines 74 80) the Hoare annotation is: false [2020-11-30 00:15:56,669 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L270 CegarLoopResult]: At program point L333(lines 284 334) the Hoare annotation is: false [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L234(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L234-2(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L234-3(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L234-5(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L234-6(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L234-8(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,670 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:15:56,671 INFO L274 CegarLoopResult]: For program point L234-9(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,671 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-30 00:15:56,671 INFO L274 CegarLoopResult]: For program point L234-11(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,671 INFO L274 CegarLoopResult]: For program point L234-12(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,671 INFO L274 CegarLoopResult]: For program point L234-14(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,671 INFO L274 CegarLoopResult]: For program point L234-15(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,671 INFO L274 CegarLoopResult]: For program point L234-17(lines 234 238) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L136(lines 136 144) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L136-1(lines 136 144) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L136-2(lines 136 144) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L106(lines 106 123) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L106-1(lines 106 123) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L106-2(lines 106 123) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L106-3(lines 106 123) no Hoare annotation was computed. [2020-11-30 00:15:56,672 INFO L274 CegarLoopResult]: For program point L106-4(lines 106 123) no Hoare annotation was computed. [2020-11-30 00:15:56,673 INFO L274 CegarLoopResult]: For program point L106-5(lines 106 123) no Hoare annotation was computed. [2020-11-30 00:15:56,673 INFO L274 CegarLoopResult]: For program point L305(lines 305 311) no Hoare annotation was computed. [2020-11-30 00:15:56,673 INFO L270 CegarLoopResult]: At program point L305-1(lines 305 311) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (= ~pumpRunning~0 1)) (.cse2 (not (= 0 ~systemActive~0))) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and (= ~switchedOnBeforeTS~0 1) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse4 .cse5) (and .cse0 .cse2 (= ~pumpRunning~0 0) .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (<= 2 ~waterLevel~0) .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,673 INFO L270 CegarLoopResult]: At program point L74(lines 70 92) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (not (= 0 ~systemActive~0))) (.cse2 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse3 (<= ~waterLevel~0 2)) (.cse4 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and (= ~switchedOnBeforeTS~0 1) .cse0 (= ~pumpRunning~0 1) .cse1 .cse2 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse3 .cse4) (and .cse0 .cse1 (= ~pumpRunning~0 0) .cse2 .cse3 .cse4))) [2020-11-30 00:15:56,673 INFO L270 CegarLoopResult]: At program point L74-1(lines 70 92) the Hoare annotation is: false [2020-11-30 00:15:56,674 INFO L270 CegarLoopResult]: At program point L74-2(lines 70 92) the Hoare annotation is: false [2020-11-30 00:15:56,674 INFO L270 CegarLoopResult]: At program point L240(lines 225 243) the Hoare annotation is: false [2020-11-30 00:15:56,674 INFO L270 CegarLoopResult]: At program point L240-1(lines 225 243) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (not (= 0 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and .cse0 (= |ULTIMATE.start_isHighWaterLevel_#res| 0) .cse1 .cse2 .cse3 (= ULTIMATE.start_isHighWaterLevel_~tmp___0~0 0) .cse4 .cse5) (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,674 INFO L270 CegarLoopResult]: At program point L240-2(lines 225 243) the Hoare annotation is: false [2020-11-30 00:15:56,674 INFO L270 CegarLoopResult]: At program point L240-3(lines 225 243) the Hoare annotation is: false [2020-11-30 00:15:56,674 INFO L270 CegarLoopResult]: At program point L240-4(lines 225 243) the Hoare annotation is: false [2020-11-30 00:15:56,675 INFO L270 CegarLoopResult]: At program point L240-5(lines 225 243) the Hoare annotation is: false [2020-11-30 00:15:56,675 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:15:56,675 INFO L274 CegarLoopResult]: For program point L373(lines 373 377) no Hoare annotation was computed. [2020-11-30 00:15:56,675 INFO L274 CegarLoopResult]: For program point L110(lines 110 118) no Hoare annotation was computed. [2020-11-30 00:15:56,675 INFO L274 CegarLoopResult]: For program point L110-1(lines 110 118) no Hoare annotation was computed. [2020-11-30 00:15:56,675 INFO L274 CegarLoopResult]: For program point L110-2(lines 110 118) no Hoare annotation was computed. [2020-11-30 00:15:56,675 INFO L274 CegarLoopResult]: For program point L110-3(lines 110 118) no Hoare annotation was computed. [2020-11-30 00:15:56,676 INFO L274 CegarLoopResult]: For program point L110-4(lines 110 118) no Hoare annotation was computed. [2020-11-30 00:15:56,676 INFO L274 CegarLoopResult]: For program point L110-5(lines 110 118) no Hoare annotation was computed. [2020-11-30 00:15:56,676 INFO L270 CegarLoopResult]: At program point L441(lines 436 444) the Hoare annotation is: (and (= ~switchedOnBeforeTS~0 1) (= ULTIMATE.start_main_~tmp~9 1) (= ~pumpRunning~0 1) (not (= 0 ~systemActive~0)) (= ULTIMATE.start_test_~splverifierCounter~0 0) (= |ULTIMATE.start_isPumpRunning_#res| 1) (<= ~waterLevel~0 2) (= |ULTIMATE.start_valid_product_#res| 1)) [2020-11-30 00:15:56,676 INFO L270 CegarLoopResult]: At program point L441-1(lines 436 444) the Hoare annotation is: false [2020-11-30 00:15:56,676 INFO L270 CegarLoopResult]: At program point L441-2(lines 436 444) the Hoare annotation is: false [2020-11-30 00:15:56,676 INFO L274 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-11-30 00:15:56,677 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-11-30 00:15:56,677 INFO L274 CegarLoopResult]: For program point L46-2(line 46) no Hoare annotation was computed. [2020-11-30 00:15:56,677 INFO L274 CegarLoopResult]: For program point L839(lines 839 856) no Hoare annotation was computed. [2020-11-30 00:15:56,677 INFO L270 CegarLoopResult]: At program point L839-1(lines 1 994) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 1)) (.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse2 (not (= 0 ~systemActive~0))) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_getWaterLevel_#res| 2) .cse2 (<= 2 ~waterLevel~0) (<= 2 |ULTIMATE.start_getWaterLevel_#res|) (<= ULTIMATE.start___utac_acc__Specification5_spec__3_~tmp~8 2) (< 1 ULTIMATE.start___utac_acc__Specification5_spec__3_~tmp~8) .cse3 .cse4 .cse5) (and (= ~switchedOnBeforeTS~0 1) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse4 .cse5) (and .cse0 .cse2 (= ~pumpRunning~0 0) .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,677 INFO L274 CegarLoopResult]: For program point L839-2(lines 839 856) no Hoare annotation was computed. [2020-11-30 00:15:56,677 INFO L270 CegarLoopResult]: At program point L839-3(lines 1 994) the Hoare annotation is: false [2020-11-30 00:15:56,677 INFO L274 CegarLoopResult]: For program point L839-4(lines 839 856) no Hoare annotation was computed. [2020-11-30 00:15:56,678 INFO L270 CegarLoopResult]: At program point L839-5(lines 1 994) the Hoare annotation is: false [2020-11-30 00:15:56,678 INFO L270 CegarLoopResult]: At program point L81(lines 81 87) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (= ~pumpRunning~0 1)) (.cse2 (not (= 0 ~systemActive~0))) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and (= ~switchedOnBeforeTS~0 1) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse4 .cse5) (and .cse0 .cse2 (= ~pumpRunning~0 0) .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (<= 2 ~waterLevel~0) .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,678 INFO L270 CegarLoopResult]: At program point L81-1(lines 81 87) the Hoare annotation is: false [2020-11-30 00:15:56,678 INFO L270 CegarLoopResult]: At program point L81-2(lines 81 87) the Hoare annotation is: false [2020-11-30 00:15:56,678 INFO L274 CegarLoopResult]: For program point L843(lines 843 853) no Hoare annotation was computed. [2020-11-30 00:15:56,678 INFO L274 CegarLoopResult]: For program point L843-2(lines 843 853) no Hoare annotation was computed. [2020-11-30 00:15:56,678 INFO L274 CegarLoopResult]: For program point L843-4(lines 843 853) no Hoare annotation was computed. [2020-11-30 00:15:56,679 INFO L274 CegarLoopResult]: For program point L315(lines 315 328) no Hoare annotation was computed. [2020-11-30 00:15:56,679 INFO L274 CegarLoopResult]: For program point L844(lines 844 850) no Hoare annotation was computed. [2020-11-30 00:15:56,679 INFO L270 CegarLoopResult]: At program point L910-2(lines 910 924) the Hoare annotation is: false [2020-11-30 00:15:56,679 INFO L274 CegarLoopResult]: For program point L844-2(lines 844 850) no Hoare annotation was computed. [2020-11-30 00:15:56,679 INFO L274 CegarLoopResult]: For program point L844-4(lines 844 850) no Hoare annotation was computed. [2020-11-30 00:15:56,679 INFO L274 CegarLoopResult]: For program point L349(lines 349 353) no Hoare annotation was computed. [2020-11-30 00:15:56,679 INFO L274 CegarLoopResult]: For program point L349-3(lines 349 353) no Hoare annotation was computed. [2020-11-30 00:15:56,679 INFO L274 CegarLoopResult]: For program point L349-6(lines 349 353) no Hoare annotation was computed. [2020-11-30 00:15:56,680 INFO L274 CegarLoopResult]: For program point L911(line 911) no Hoare annotation was computed. [2020-11-30 00:15:56,680 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:15:56,680 INFO L270 CegarLoopResult]: At program point L185(lines 180 188) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse5 (= ~pumpRunning~0 1)) (.cse1 (not (= 0 ~systemActive~0))) (.cse2 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse6 (= |ULTIMATE.start_isPumpRunning_#res| 1)) (.cse3 (<= ~waterLevel~0 2)) (.cse4 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_isPumpRunning_#res| 0) (= ~pumpRunning~0 0) .cse2 .cse3 .cse4) (and (= ~switchedOnBeforeTS~0 1) .cse0 .cse5 .cse1 .cse2 .cse6 .cse3 .cse4) (and .cse0 .cse5 .cse1 (<= 2 ~waterLevel~0) .cse2 .cse6 .cse3 .cse4))) [2020-11-30 00:15:56,680 INFO L270 CegarLoopResult]: At program point L185-1(lines 180 188) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (not (= 0 ~systemActive~0))) (.cse2 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse3 (<= ~waterLevel~0 2)) (.cse4 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and (= ~switchedOnBeforeTS~0 1) .cse0 (= ~pumpRunning~0 1) .cse1 .cse2 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse3 .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_isPumpRunning_#res| 0) (= ~pumpRunning~0 0) .cse2 .cse3 .cse4))) [2020-11-30 00:15:56,686 INFO L270 CegarLoopResult]: At program point L185-2(lines 180 188) the Hoare annotation is: false [2020-11-30 00:15:56,686 INFO L270 CegarLoopResult]: At program point L185-3(lines 180 188) the Hoare annotation is: false [2020-11-30 00:15:56,687 INFO L270 CegarLoopResult]: At program point L185-4(lines 180 188) the Hoare annotation is: false [2020-11-30 00:15:56,687 INFO L270 CegarLoopResult]: At program point L185-5(lines 180 188) the Hoare annotation is: false [2020-11-30 00:15:56,687 INFO L270 CegarLoopResult]: At program point L418(lines 413 421) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 1)) (.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse2 (not (= 0 ~systemActive~0))) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_getWaterLevel_#res| 2) .cse2 (<= 2 ~waterLevel~0) (<= 2 |ULTIMATE.start_getWaterLevel_#res|) .cse3 .cse4 .cse5) (and (= ~switchedOnBeforeTS~0 1) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse4 .cse5) (and .cse0 .cse2 (= ~pumpRunning~0 0) .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,687 INFO L270 CegarLoopResult]: At program point L418-1(lines 413 421) the Hoare annotation is: false [2020-11-30 00:15:56,688 INFO L270 CegarLoopResult]: At program point L418-2(lines 413 421) the Hoare annotation is: false [2020-11-30 00:15:56,688 INFO L274 CegarLoopResult]: For program point L286(lines 285 332) no Hoare annotation was computed. [2020-11-30 00:15:56,688 INFO L274 CegarLoopResult]: For program point L253(lines 253 257) no Hoare annotation was computed. [2020-11-30 00:15:56,689 INFO L274 CegarLoopResult]: For program point L253-2(lines 253 257) no Hoare annotation was computed. [2020-11-30 00:15:56,689 INFO L274 CegarLoopResult]: For program point L253-3(lines 253 257) no Hoare annotation was computed. [2020-11-30 00:15:56,690 INFO L274 CegarLoopResult]: For program point L253-5(lines 253 257) no Hoare annotation was computed. [2020-11-30 00:15:56,690 INFO L274 CegarLoopResult]: For program point L253-6(lines 253 257) no Hoare annotation was computed. [2020-11-30 00:15:56,690 INFO L274 CegarLoopResult]: For program point L253-8(lines 253 257) no Hoare annotation was computed. [2020-11-30 00:15:56,690 INFO L274 CegarLoopResult]: For program point L914(lines 914 918) no Hoare annotation was computed. [2020-11-30 00:15:56,691 INFO L274 CegarLoopResult]: For program point L914-1(lines 914 918) no Hoare annotation was computed. [2020-11-30 00:15:56,691 INFO L274 CegarLoopResult]: For program point L287(lines 287 291) no Hoare annotation was computed. [2020-11-30 00:15:56,692 INFO L274 CegarLoopResult]: For program point L982(lines 982 989) no Hoare annotation was computed. [2020-11-30 00:15:56,694 INFO L277 CegarLoopResult]: At program point L982-1(lines 982 989) the Hoare annotation is: true [2020-11-30 00:15:56,694 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:15:56,694 INFO L270 CegarLoopResult]: At program point L818(lines 813 820) the Hoare annotation is: (and (= ~waterLevel~0 1) (= ULTIMATE.start_main_~tmp~9 1) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 0) (= |ULTIMATE.start_valid_product_#res| 1)) [2020-11-30 00:15:56,695 INFO L274 CegarLoopResult]: For program point L323(lines 323 327) no Hoare annotation was computed. [2020-11-30 00:15:56,695 INFO L270 CegarLoopResult]: At program point L323-2(lines 323 327) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (= ~pumpRunning~0 1)) (.cse2 (not (= 0 ~systemActive~0))) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and (= ~switchedOnBeforeTS~0 1) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse4 .cse5) (and .cse0 .cse2 (= ~pumpRunning~0 0) .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (<= 2 ~waterLevel~0) .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,695 INFO L270 CegarLoopResult]: At program point L886(lines 1 994) the Hoare annotation is: (and (= ~waterLevel~0 1) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 0)) [2020-11-30 00:15:56,695 INFO L270 CegarLoopResult]: At program point L259(lines 244 262) the Hoare annotation is: (and (= ~switchedOnBeforeTS~0 1) (= ULTIMATE.start_main_~tmp~9 1) (= ~pumpRunning~0 1) (not (= 0 ~systemActive~0)) (= ULTIMATE.start_test_~splverifierCounter~0 0) (= |ULTIMATE.start_isPumpRunning_#res| 1) (<= ~waterLevel~0 2) (= |ULTIMATE.start_valid_product_#res| 1)) [2020-11-30 00:15:56,696 INFO L270 CegarLoopResult]: At program point L259-1(lines 244 262) the Hoare annotation is: false [2020-11-30 00:15:56,696 INFO L270 CegarLoopResult]: At program point L259-2(lines 244 262) the Hoare annotation is: false [2020-11-30 00:15:56,697 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:15:56,697 INFO L274 CegarLoopResult]: For program point L426(lines 426 432) no Hoare annotation was computed. [2020-11-30 00:15:56,697 INFO L274 CegarLoopResult]: For program point L426-1(lines 426 432) no Hoare annotation was computed. [2020-11-30 00:15:56,698 INFO L274 CegarLoopResult]: For program point L426-2(lines 426 432) no Hoare annotation was computed. [2020-11-30 00:15:56,698 INFO L274 CegarLoopResult]: For program point L426-3(lines 426 432) no Hoare annotation was computed. [2020-11-30 00:15:56,698 INFO L274 CegarLoopResult]: For program point L426-4(lines 426 432) no Hoare annotation was computed. [2020-11-30 00:15:56,698 INFO L274 CegarLoopResult]: For program point L426-5(lines 426 432) no Hoare annotation was computed. [2020-11-30 00:15:56,698 INFO L274 CegarLoopResult]: For program point L361(lines 361 365) no Hoare annotation was computed. [2020-11-30 00:15:56,699 INFO L274 CegarLoopResult]: For program point L295(lines 295 301) no Hoare annotation was computed. [2020-11-30 00:15:56,699 INFO L270 CegarLoopResult]: At program point L295-1(lines 295 301) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (= ~pumpRunning~0 1)) (.cse2 (not (= 0 ~systemActive~0))) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and (= ~switchedOnBeforeTS~0 1) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_isPumpRunning_#res| 1) .cse4 .cse5) (and .cse0 .cse2 (= ~pumpRunning~0 0) .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (<= 2 ~waterLevel~0) .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,699 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:15:56,699 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:15:56,700 INFO L274 CegarLoopResult]: For program point L132(lines 132 149) no Hoare annotation was computed. [2020-11-30 00:15:56,700 INFO L274 CegarLoopResult]: For program point L132-1(lines 132 149) no Hoare annotation was computed. [2020-11-30 00:15:56,700 INFO L274 CegarLoopResult]: For program point L132-2(lines 132 149) no Hoare annotation was computed. [2020-11-30 00:15:56,700 INFO L277 CegarLoopResult]: At program point L991(lines 972 994) the Hoare annotation is: true [2020-11-30 00:15:56,700 INFO L270 CegarLoopResult]: At program point L958(lines 954 960) the Hoare annotation is: (and (= ~waterLevel~0 1) (= ULTIMATE.start_main_~tmp~9 1) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 0) (= |ULTIMATE.start_valid_product_#res| 1)) [2020-11-30 00:15:56,701 INFO L270 CegarLoopResult]: At program point L431(lines 422 435) the Hoare annotation is: false [2020-11-30 00:15:56,701 INFO L270 CegarLoopResult]: At program point L431-1(lines 422 435) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~tmp~9 1)) (.cse1 (not (= 0 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ULTIMATE.start_test_~splverifierCounter~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= |ULTIMATE.start_valid_product_#res| 1))) (or (and (not (= |ULTIMATE.start_isHighWaterSensorDry_#res| 0)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3 .cse4 .cse5))) [2020-11-30 00:15:56,701 INFO L270 CegarLoopResult]: At program point L431-2(lines 422 435) the Hoare annotation is: false [2020-11-30 00:15:56,701 INFO L270 CegarLoopResult]: At program point L431-3(lines 422 435) the Hoare annotation is: false [2020-11-30 00:15:56,701 INFO L270 CegarLoopResult]: At program point L431-4(lines 422 435) the Hoare annotation is: false [2020-11-30 00:15:56,702 INFO L270 CegarLoopResult]: At program point L431-5(lines 422 435) the Hoare annotation is: false [2020-11-30 00:15:56,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:15:56 BoogieIcfgContainer [2020-11-30 00:15:56,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:15:56,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:15:56,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:15:56,778 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:15:56,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:46" (3/4) ... [2020-11-30 00:15:56,784 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:15:56,821 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2020-11-30 00:15:56,823 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-30 00:15:56,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 00:15:56,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 00:15:56,828 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:15:56,830 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:15:56,832 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:15:56,871 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((waterLevel == 1 && !(0 == systemActive)) && pumpRunning == 0) && \result == 1 [2020-11-30 00:15:56,872 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((waterLevel == 1 && tmp == 1) && !(0 == systemActive)) && pumpRunning == 0) && \result == 1 [2020-11-30 00:15:56,872 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((waterLevel == 1 && tmp == 1) && !(0 == systemActive)) && pumpRunning == 0) && \result == 1 [2020-11-30 00:15:56,872 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((tmp == 1 && pumpRunning == 1) && \result <= 2) && !(0 == systemActive)) && 2 <= waterLevel) && 2 <= \result) && tmp <= 2) && 1 < tmp) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1)) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,873 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,873 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,874 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,875 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((tmp == 1 && !(0 == systemActive)) && \result == 0) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1)) || (((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,875 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((tmp == 1 && !(0 == systemActive)) && \result == 0) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,876 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,876 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,878 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((tmp == 1 && pumpRunning == 1) && \result <= 2) && !(0 == systemActive)) && 2 <= waterLevel) && 2 <= \result) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1)) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,879 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1 [2020-11-30 00:15:56,880 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\result == 0) && tmp == 1) && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || ((((((tmp == 1 && !(0 == systemActive)) && 2 <= waterLevel) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,880 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || ((((((tmp == 1 && !(0 == systemActive)) && \result == 0) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,881 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1 [2020-11-30 00:15:56,882 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((tmp == 1 && \result == 0) && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && tmp___0 == 0) && waterLevel <= 2) && \result == 1) || ((((((tmp == 1 && !(0 == systemActive)) && 2 <= waterLevel) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) [2020-11-30 00:15:56,981 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_69988c31-4113-4592-8dac-3f2888dc0056/bin/uautomizer/witness.graphml [2020-11-30 00:15:56,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:15:56,983 INFO L168 Benchmark]: Toolchain (without parser) took 13472.59 ms. Allocated memory was 86.0 MB in the beginning and 161.5 MB in the end (delta: 75.5 MB). Free memory was 53.3 MB in the beginning and 62.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:56,984 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 86.0 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:15:56,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.05 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 53.1 MB in the beginning and 76.9 MB in the end (delta: -23.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:56,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.56 ms. Allocated memory is still 111.1 MB. Free memory was 76.5 MB in the beginning and 72.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:56,986 INFO L168 Benchmark]: Boogie Preprocessor took 123.10 ms. Allocated memory is still 111.1 MB. Free memory was 72.7 MB in the beginning and 70.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:56,986 INFO L168 Benchmark]: RCFGBuilder took 1680.04 ms. Allocated memory is still 111.1 MB. Free memory was 70.2 MB in the beginning and 53.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:56,987 INFO L168 Benchmark]: TraceAbstraction took 10620.82 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 52.7 MB in the beginning and 72.9 MB in the end (delta: -20.2 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:56,987 INFO L168 Benchmark]: Witness Printer took 204.18 ms. Allocated memory is still 161.5 MB. Free memory was 72.9 MB in the beginning and 62.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:56,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 86.0 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 691.05 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 53.1 MB in the beginning and 76.9 MB in the end (delta: -23.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 144.56 ms. Allocated memory is still 111.1 MB. Free memory was 76.5 MB in the beginning and 72.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.10 ms. Allocated memory is still 111.1 MB. Free memory was 72.7 MB in the beginning and 70.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1680.04 ms. Allocated memory is still 111.1 MB. Free memory was 70.2 MB in the beginning and 53.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10620.82 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 52.7 MB in the beginning and 72.9 MB in the end (delta: -20.2 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. * Witness Printer took 204.18 ms. Allocated memory is still 161.5 MB. Free memory was 72.9 MB in the beginning and 62.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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: 422]: Loop Invariant Derived loop invariant: ((((((!(\result == 0) && tmp == 1) && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || ((((((tmp == 1 && !(0 == systemActive)) && 2 <= waterLevel) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 422]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 422]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 910]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 422]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 422]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 954]: Loop Invariant Derived loop invariant: (((waterLevel == 1 && tmp == 1) && !(0 == systemActive)) && pumpRunning == 0) && \result == 1 - InvariantResult [Line: 244]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 244]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 244]: Loop Invariant Derived loop invariant: ((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1 - InvariantResult [Line: 422]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 81]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 81]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 284]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 81]: Loop Invariant Derived loop invariant: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 972]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 413]: Loop Invariant Derived loop invariant: (((((((((tmp == 1 && pumpRunning == 1) && \result <= 2) && !(0 == systemActive)) && 2 <= waterLevel) && 2 <= \result) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1)) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 413]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 323]: Loop Invariant Derived loop invariant: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (waterLevel == 1 && !(0 == systemActive)) && pumpRunning == 0 - InvariantResult [Line: 413]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 889]: Loop Invariant Derived loop invariant: ((waterLevel == 1 && !(0 == systemActive)) && pumpRunning == 0) && \result == 1 - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: ((((((tmp == 1 && !(0 == systemActive)) && \result == 0) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((((((((((tmp == 1 && pumpRunning == 1) && \result <= 2) && !(0 == systemActive)) && 2 <= waterLevel) && 2 <= \result) && tmp <= 2) && 1 < tmp) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1)) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 305]: Loop Invariant Derived loop invariant: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: (((((((tmp == 1 && \result == 0) && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && tmp___0 == 0) && waterLevel <= 2) && \result == 1) || ((((((tmp == 1 && !(0 == systemActive)) && 2 <= waterLevel) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 436]: Loop Invariant Derived loop invariant: ((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1 - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 436]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 295]: Loop Invariant Derived loop invariant: ((((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || (((((tmp == 1 && !(0 == systemActive)) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1)) || ((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 436]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 982]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 813]: Loop Invariant Derived loop invariant: (((waterLevel == 1 && tmp == 1) && !(0 == systemActive)) && pumpRunning == 0) && \result == 1 - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) || ((((((tmp == 1 && !(0 == systemActive)) && \result == 0) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: (((((((tmp == 1 && !(0 == systemActive)) && \result == 0) && pumpRunning == 0) && splverifierCounter == 0) && waterLevel <= 2) && \result == 1) || (((((((switchedOnBeforeTS == 1 && tmp == 1) && pumpRunning == 1) && !(0 == systemActive)) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1)) || (((((((tmp == 1 && pumpRunning == 1) && !(0 == systemActive)) && 2 <= waterLevel) && splverifierCounter == 0) && \result == 1) && waterLevel <= 2) && \result == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1044 SDtfs, 1656 SDslu, 1464 SDs, 0 SdLazy, 257 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 554 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 50 LocationsWithAnnotation, 50 PreInvPairs, 155 NumberOfFragments, 902 HoareAnnotationTreeSize, 50 FomulaSimplifications, 78102 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 50 FomulaSimplificationsInter, 17559 FormulaSimplificationTreeSizeReductionInter, 3.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 29305 SizeOfPredicates, 4 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 26/32 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...