./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/water_pid.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/water_pid.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5c464086249e43e194470df21028d8e5ac1a606 .................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/water_pid.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5c464086249e43e194470df21028d8e5ac1a606 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:59:35,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:59:35,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:59:35,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:59:35,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:59:35,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:59:35,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:59:35,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:59:35,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:59:35,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:59:35,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:59:35,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:59:35,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:59:35,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:59:35,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:59:35,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:59:35,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:59:35,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:59:35,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:59:35,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:59:35,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:59:35,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:59:35,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:59:35,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:59:35,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:59:35,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:59:35,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:59:35,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:59:35,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:59:35,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:59:35,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:59:35,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:59:35,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:59:35,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:59:35,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:59:35,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:59:35,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:59:35,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:59:35,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:59:35,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:59:35,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:59:35,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 00:59:35,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:59:35,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:59:35,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:59:35,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:59:35,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:59:35,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:59:35,179 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:59:35,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:59:35,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:59:35,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 00:59:35,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:59:35,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:59:35,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:59:35,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:59:35,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:59:35,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:59:35,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:59:35,181 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:59:35,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:59:35,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:59:35,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:59:35,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:59:35,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:59:35,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:59:35,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:59:35,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:59:35,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 00:59:35,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 00:59:35,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:59:35,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:59:35,183 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c464086249e43e194470df21028d8e5ac1a606 [2021-08-26 00:59:35,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:59:35,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:59:35,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:59:35,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:59:35,436 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:59:35,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/water_pid.c [2021-08-26 00:59:35,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1651b99fd/5dd4ecd22ddf4b26bbf0bea877f15868/FLAGa3a466f13 [2021-08-26 00:59:35,819 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:59:35,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2021-08-26 00:59:35,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1651b99fd/5dd4ecd22ddf4b26bbf0bea877f15868/FLAGa3a466f13 [2021-08-26 00:59:36,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1651b99fd/5dd4ecd22ddf4b26bbf0bea877f15868 [2021-08-26 00:59:36,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:59:36,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:59:36,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:59:36,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:59:36,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:59:36,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2891f988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36, skipping insertion in model container [2021-08-26 00:59:36,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:59:36,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:59:36,362 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-08-26 00:59:36,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:59:36,380 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:59:36,387 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-08-26 00:59:36,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:59:36,434 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:59:36,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36 WrapperNode [2021-08-26 00:59:36,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:59:36,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:59:36,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:59:36,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:59:36,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:59:36,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:59:36,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:59:36,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:59:36,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:59:36,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:59:36,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:59:36,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:59:36,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (1/1) ... [2021-08-26 00:59:36,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:59:36,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:59:36,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:59:36,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:59:36,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:59:36,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:59:36,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 00:59:36,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:59:36,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:59:36,733 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-08-26 00:59:36,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:59:36 BoogieIcfgContainer [2021-08-26 00:59:36,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:59:36,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:59:36,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:59:36,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:59:36,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:59:36" (1/3) ... [2021-08-26 00:59:36,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d58514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:59:36, skipping insertion in model container [2021-08-26 00:59:36,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:36" (2/3) ... [2021-08-26 00:59:36,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d58514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:59:36, skipping insertion in model container [2021-08-26 00:59:36,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:59:36" (3/3) ... [2021-08-26 00:59:36,739 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-08-26 00:59:36,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:59:36,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:59:36,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:59:36,796 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:59:36,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:59:36,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:59:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 00:59:36,823 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:59:36,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 00:59:36,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:59:36,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:59:36,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2021-08-26 00:59:36,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 00:59:36,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878168530] [2021-08-26 00:59:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:59:36,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 00:59:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:59:36,953 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 00:59:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:59:37,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 00:59:37,008 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 00:59:37,008 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:59:37,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 00:59:37,016 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:59:37,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:59:37 BoogieIcfgContainer [2021-08-26 00:59:37,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:59:37,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:59:37,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:59:37,042 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:59:37,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:59:36" (3/4) ... [2021-08-26 00:59:37,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:59:37,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:59:37,049 INFO L168 Benchmark]: Toolchain (without parser) took 794.83 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 40.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:59:37,051 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:59:37,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.33 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 39.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:59:37,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 38.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:59:37,052 INFO L168 Benchmark]: Boogie Preprocessor took 32.27 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 37.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:59:37,053 INFO L168 Benchmark]: RCFGBuilder took 235.57 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 24.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:59:37,057 INFO L168 Benchmark]: TraceAbstraction took 303.44 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 24.2 MB in the beginning and 41.0 MB in the end (delta: -16.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:59:37,058 INFO L168 Benchmark]: Witness Printer took 4.40 ms. Allocated memory is still 71.3 MB. Free memory was 41.0 MB in the beginning and 40.8 MB in the end (delta: 250.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:59:37,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 183.33 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 39.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 38.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.27 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 37.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 235.57 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 24.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 303.44 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 24.2 MB in the beginning and 41.0 MB in the end (delta: -16.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.40 ms. Allocated memory is still 71.3 MB. Free memory was 41.0 MB in the beginning and 40.8 MB in the end (delta: 250.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L18] yn += ui [L19] return yn; VAL [yn=49] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [yn=49] [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; VAL [yn=52] [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND TRUE !(cond) VAL [yn=52] [L8] reach_error() VAL [yn=52] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 224.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 20.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.6ms SsaConstructionTime, 39.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-08-26 00:59:37,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:59:38,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:59:38,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:59:38,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:59:38,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:59:38,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:59:38,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:59:38,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:59:38,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:59:38,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:59:38,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:59:38,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:59:38,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:59:38,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:59:38,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:59:38,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:59:38,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:59:38,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:59:38,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:59:38,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:59:38,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:59:38,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:59:38,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:59:38,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:59:38,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:59:38,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:59:38,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:59:38,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:59:38,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:59:38,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:59:38,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:59:38,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:59:38,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:59:38,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:59:38,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:59:38,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:59:38,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:59:38,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:59:38,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:59:38,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:59:38,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:59:38,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 00:59:38,815 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:59:38,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:59:38,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:59:38,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:59:38,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:59:38,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:59:38,818 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:59:38,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:59:38,818 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:59:38,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:59:38,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:59:38,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:59:38,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:59:38,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:59:38,819 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 00:59:38,819 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 00:59:38,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:59:38,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:59:38,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:59:38,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:59:38,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:59:38,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:59:38,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:59:38,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:59:38,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:59:38,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:59:38,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:59:38,826 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 00:59:38,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 00:59:38,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:59:38,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:59:38,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 00:59:38,827 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c464086249e43e194470df21028d8e5ac1a606 [2021-08-26 00:59:39,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:59:39,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:59:39,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:59:39,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:59:39,131 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:59:39,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/water_pid.c [2021-08-26 00:59:39,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19148a20d/92572a0813a14058bbcad4a4dbfaa156/FLAG9447eb75a [2021-08-26 00:59:39,536 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:59:39,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2021-08-26 00:59:39,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19148a20d/92572a0813a14058bbcad4a4dbfaa156/FLAG9447eb75a [2021-08-26 00:59:39,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19148a20d/92572a0813a14058bbcad4a4dbfaa156 [2021-08-26 00:59:39,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:59:39,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:59:39,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:59:39,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:59:39,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:59:39,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b71726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39, skipping insertion in model container [2021-08-26 00:59:39,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:59:39,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:59:39,693 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-08-26 00:59:39,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:59:39,726 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:59:39,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-08-26 00:59:39,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:59:39,771 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:59:39,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39 WrapperNode [2021-08-26 00:59:39,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:59:39,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:59:39,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:59:39,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:59:39,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:59:39,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:59:39,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:59:39,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:59:39,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:59:39,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:59:39,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:59:39,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:59:39,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (1/1) ... [2021-08-26 00:59:39,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:59:39,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:59:39,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:59:39,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:59:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 00:59:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:59:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:59:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:59:43,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:59:43,501 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-08-26 00:59:43,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:59:43 BoogieIcfgContainer [2021-08-26 00:59:43,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:59:43,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:59:43,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:59:43,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:59:43,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:59:39" (1/3) ... [2021-08-26 00:59:43,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efe04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:59:43, skipping insertion in model container [2021-08-26 00:59:43,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:59:39" (2/3) ... [2021-08-26 00:59:43,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efe04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:59:43, skipping insertion in model container [2021-08-26 00:59:43,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:59:43" (3/3) ... [2021-08-26 00:59:43,508 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-08-26 00:59:43,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:59:43,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:59:43,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:59:43,554 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:59:43,554 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:59:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:59:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 00:59:43,565 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:59:43,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 00:59:43,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:59:43,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:59:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2021-08-26 00:59:43,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:59:43,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906440568] [2021-08-26 00:59:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:59:43,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:59:43,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:59:43,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:59:43,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 00:59:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:59:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 00:59:45,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:59:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:59:47,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:00:15,091 WARN L207 SmtUtils]: Spent 6.45 s on a formula simplification that was a NOOP. DAG size: 12 [2021-08-26 01:00:30,194 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-08-26 01:00:32,242 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2021-08-26 01:00:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:00:32,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:00:32,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906440568] [2021-08-26 01:00:32,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906440568] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:00:32,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:00:32,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-26 01:00:32,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197081150] [2021-08-26 01:00:32,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:00:32,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:00:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:00:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=4, NotChecked=14, Total=90 [2021-08-26 01:00:32,257 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:00:34,623 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (= .cse2 c_~yn~0) (= .cse2 c_~ui~0) (fp.geq .cse0 (fp.neg .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-08-26 01:01:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:01:00,495 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-08-26 01:01:00,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 01:01:00,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-26 01:01:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:01:00,525 INFO L225 Difference]: With dead ends: 37 [2021-08-26 01:01:00,525 INFO L226 Difference]: Without dead ends: 15 [2021-08-26 01:01:00,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 29952.4ms TimeCoverageRelationStatistics Valid=30, Invalid=63, Unknown=5, NotChecked=34, Total=132 [2021-08-26 01:01:00,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-26 01:01:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2021-08-26 01:01:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:01:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-26 01:01:00,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-08-26 01:01:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:01:00,550 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-26 01:01:00,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:01:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-26 01:01:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 01:01:00,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:01:00,551 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:01:00,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:01:00,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:01:00,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:01:00,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:01:00,762 INFO L82 PathProgramCache]: Analyzing trace with hash 729433995, now seen corresponding path program 1 times [2021-08-26 01:01:00,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:01:00,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941098393] [2021-08-26 01:01:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:01:00,763 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:01:00,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:01:00,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:01:00,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:01:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:01:04,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 01:01:04,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:01:49,252 WARN L207 SmtUtils]: Spent 13.74 s on a formula simplification that was a NOOP. DAG size: 29 [2021-08-26 01:02:26,566 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= |c_ULTIMATE.start_y_#res| (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse6))) (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse0)) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse2) .cse4) .cse4)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse4 .cse4) (fp.sub c_currentRoundingMode .cse2 .cse3)))))))))) (= c_ULTIMATE.start_main_~yc~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-08-26 01:02:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2021-08-26 01:02:27,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:02:40,757 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-08-26 01:02:55,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:02:55,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941098393] [2021-08-26 01:02:55,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 12503 column 7: push canceled [2021-08-26 01:02:55,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1198320352] [2021-08-26 01:02:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:02:55,356 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 01:02:55,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 01:02:55,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 01:02:55,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-08-26 01:03:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:03:10,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 01:03:10,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:03:10,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-08-26 01:03:10,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717072520] [2021-08-26 01:03:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:03:10,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:03:10,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:03:10,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 01:03:10,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 01:05:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:05:21,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-26 01:05:21,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:05:21,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-08-26 01:05:21,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:05:21,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 01:05:21,574 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 01:05:21,574 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 01:05:21,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:05:21,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:05:21,980 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2021-08-26 01:05:22,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2021-08-26 01:05:22,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-08-26 01:05:22,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-08-26 01:05:22,288 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:05:22,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:05:22 BoogieIcfgContainer [2021-08-26 01:05:22,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:05:22,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:05:22,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:05:22,298 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:05:22,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:59:43" (3/4) ... [2021-08-26 01:05:22,300 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:05:22,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:05:22,301 INFO L168 Benchmark]: Toolchain (without parser) took 342741.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.3 MB in the beginning and 36.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:05:22,301 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:05:22,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.23 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 40.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:05:22,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 56.6 MB. Free memory was 40.1 MB in the beginning and 38.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:05:22,302 INFO L168 Benchmark]: Boogie Preprocessor took 45.43 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 37.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:05:22,303 INFO L168 Benchmark]: RCFGBuilder took 3644.69 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 51.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-08-26 01:05:22,303 INFO L168 Benchmark]: TraceAbstraction took 338793.24 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 37.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-08-26 01:05:22,304 INFO L168 Benchmark]: Witness Printer took 2.61 ms. Allocated memory is still 69.2 MB. Free memory was 37.3 MB in the beginning and 36.8 MB in the end (delta: 559.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:05:22,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.23 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 40.1 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 56.6 MB. Free memory was 40.1 MB in the beginning and 38.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.43 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 37.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 3644.69 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 51.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 338793.24 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 37.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 2.61 ms. Allocated memory is still 69.2 MB. Free memory was 37.3 MB in the beginning and 36.8 MB in the end (delta: 559.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L18] yn += ui [L19] return yn; [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND FALSE !(!(cond)) [L39] i++ [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 338739.3ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 5.1ms, AutomataDifference: 28278.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 25 SDslu, 50 SDs, 0 SdLazy, 27 SolverSat, 2 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 23776.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 29952.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.0ms SsaConstructionTime, 2208.4ms SatisfiabilityAnalysisTime, 46393.7ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 9 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-08-26 01:05:22,518 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-08-26 01:05:22,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...