./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 a4ecdabc 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: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:44:19,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:44:19,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:44:19,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:44:19,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:44:19,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:44:19,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:44:19,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:44:19,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:44:19,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:44:19,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:44:19,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:44:19,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:44:19,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:44:19,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:44:19,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:44:19,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:44:19,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:44:19,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:44:19,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:44:19,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:44:19,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:44:19,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:44:19,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:44:19,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:44:19,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:44:19,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:44:19,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:44:19,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:44:19,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:44:19,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:44:19,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:44:19,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:44:19,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:44:19,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:44:19,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:44:19,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:44:19,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:44:19,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:44:19,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:44:19,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:44:19,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:44:19,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:44:19,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:44:19,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:44:19,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:44:19,870 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:44:19,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:44:19,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:44:19,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:44:19,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:44:19,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:44:19,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:44:19,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:44:19,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:44:19,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:44:19,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:44:19,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:44:19,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:44:19,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:44:19,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:44:19,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:44:19,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:44:19,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:44:19,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:44:19,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:44:19,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:44:19,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:44:19,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:44:19,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:44:19,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:44:19,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c464086249e43e194470df21028d8e5ac1a606 [2020-10-24 22:44:20,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:44:20,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:44:20,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:44:20,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:44:20,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:44:20,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/water_pid.c [2020-10-24 22:44:20,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a73309d/c61038bab4604cdbac50b7594a7c045a/FLAG07dee8599 [2020-10-24 22:44:21,213 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:44:21,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2020-10-24 22:44:21,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a73309d/c61038bab4604cdbac50b7594a7c045a/FLAG07dee8599 [2020-10-24 22:44:21,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a73309d/c61038bab4604cdbac50b7594a7c045a [2020-10-24 22:44:21,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:44:21,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:44:21,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:44:21,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:44:21,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:44:21,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:21,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f1b21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21, skipping insertion in model container [2020-10-24 22:44:21,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:21,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:44:21,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:44:21,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:44:21,909 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:44:21,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:44:21,949 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:44:21,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21 WrapperNode [2020-10-24 22:44:21,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:44:21,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:44:21,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:44:21,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:44:21,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:21,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:21,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:44:21,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:44:21,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:44:21,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:44:22,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:22,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:22,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:22,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:22,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:22,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:22,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... [2020-10-24 22:44:22,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:44:22,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:44:22,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:44:22,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:44:22,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 22:44:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:44:22,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:44:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:44:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:44:22,364 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:44:22,365 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-24 22:44:22,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:22 BoogieIcfgContainer [2020-10-24 22:44:22,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:44:22,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:44:22,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:44:22,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:44:22,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:44:21" (1/3) ... [2020-10-24 22:44:22,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a766808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:44:22, skipping insertion in model container [2020-10-24 22:44:22,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:21" (2/3) ... [2020-10-24 22:44:22,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a766808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:44:22, skipping insertion in model container [2020-10-24 22:44:22,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:22" (3/3) ... [2020-10-24 22:44:22,392 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2020-10-24 22:44:22,407 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:44:22,413 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:44:22,428 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:44:22,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:44:22,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:44:22,476 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:44:22,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:44:22,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:44:22,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:44:22,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:44:22,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:44:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:44:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-24 22:44:22,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:44:22,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:44:22,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:44:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:44:22,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2020-10-24 22:44:22,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:44:22,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219919790] [2020-10-24 22:44:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:44:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:44:22,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:44:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:44:22,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:44:22,833 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:44:22,835 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:44:22,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:44:22,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:44:22 BoogieIcfgContainer [2020-10-24 22:44:22,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:44:22,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:44:22,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:44:22,885 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:44:22,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:22" (3/4) ... [2020-10-24 22:44:22,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:44:22,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:44:22,896 INFO L168 Benchmark]: Toolchain (without parser) took 1320.23 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 35.2 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:44:22,899 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 48.2 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:44:22,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.48 ms. Allocated memory is still 48.2 MB. Free memory was 22.5 MB in the beginning and 26.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:44:22,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.52 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 25.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:44:22,904 INFO L168 Benchmark]: Boogie Preprocessor took 28.85 ms. Allocated memory is still 48.2 MB. Free memory was 25.3 MB in the beginning and 24.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:44:22,905 INFO L168 Benchmark]: RCFGBuilder took 341.51 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.1 MB in the beginning and 32.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:44:22,907 INFO L168 Benchmark]: TraceAbstraction took 504.32 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 35.5 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:44:22,907 INFO L168 Benchmark]: Witness Printer took 6.39 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 35.2 MB in the end (delta: 254.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:44:22,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 48.2 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.48 ms. Allocated memory is still 48.2 MB. Free memory was 22.5 MB in the beginning and 26.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.52 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 25.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.85 ms. Allocated memory is still 48.2 MB. Free memory was 25.3 MB in the beginning and 24.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 341.51 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.1 MB in the beginning and 32.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 504.32 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 35.5 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.39 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 35.2 MB in the end (delta: 254.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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=50] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [yn=50] [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] [L3] __assert_fail("0", "water_pid.c", 3, "reach_error") VAL [yn=52] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:44:25,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:44:25,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:44:25,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:44:25,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:44:25,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:44:25,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:44:25,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:44:25,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:44:25,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:44:25,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:44:25,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:44:25,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:44:25,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:44:25,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:44:25,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:44:25,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:44:25,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:44:25,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:44:25,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:44:25,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:44:25,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:44:25,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:44:25,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:44:25,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:44:25,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:44:25,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:44:25,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:44:25,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:44:25,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:44:25,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:44:25,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:44:25,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:44:25,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:44:25,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:44:25,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:44:25,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:44:25,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:44:25,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:44:25,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:44:25,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:44:25,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:44:25,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:44:25,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:44:25,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:44:25,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:44:25,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:44:25,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:44:25,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:44:25,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:44:25,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:44:25,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:44:25,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:44:25,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:44:25,562 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:44:25,562 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:44:25,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:44:25,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:44:25,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:44:25,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:44:25,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:44:25,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:44:25,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:44:25,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:44:25,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:44:25,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:44:25,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:44:25,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:44:25,567 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:44:25,568 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:44:25,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:44:25,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:44:25,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:44:25,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c464086249e43e194470df21028d8e5ac1a606 [2020-10-24 22:44:26,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:44:26,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:44:26,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:44:26,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:44:26,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:44:26,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/water_pid.c [2020-10-24 22:44:26,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2d3e05/80c1c064e43b482388640ae3deff37dd/FLAG8771055f4 [2020-10-24 22:44:26,804 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:44:26,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/water_pid.c [2020-10-24 22:44:26,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2d3e05/80c1c064e43b482388640ae3deff37dd/FLAG8771055f4 [2020-10-24 22:44:27,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2d3e05/80c1c064e43b482388640ae3deff37dd [2020-10-24 22:44:27,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:44:27,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:44:27,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:44:27,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:44:27,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:44:27,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d04453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27, skipping insertion in model container [2020-10-24 22:44:27,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:44:27,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:44:27,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:44:27,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:44:27,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:44:27,490 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:44:27,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27 WrapperNode [2020-10-24 22:44:27,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:44:27,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:44:27,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:44:27,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:44:27,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:44:27,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:44:27,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:44:27,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:44:27,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... [2020-10-24 22:44:27,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:44:27,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:44:27,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:44:27,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:44:27,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 22:44:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:44:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:44:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:44:27,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:44:32,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:44:32,117 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-24 22:44:32,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:32 BoogieIcfgContainer [2020-10-24 22:44:32,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:44:32,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:44:32,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:44:32,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:44:32,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:44:27" (1/3) ... [2020-10-24 22:44:32,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20eeeaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:44:32, skipping insertion in model container [2020-10-24 22:44:32,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:44:27" (2/3) ... [2020-10-24 22:44:32,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20eeeaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:44:32, skipping insertion in model container [2020-10-24 22:44:32,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:44:32" (3/3) ... [2020-10-24 22:44:32,130 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2020-10-24 22:44:32,142 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:44:32,148 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:44:32,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:44:32,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:44:32,191 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:44:32,191 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:44:32,191 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:44:32,192 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:44:32,192 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:44:32,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:44:32,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:44:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:44:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-24 22:44:32,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:44:32,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:44:32,213 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:44:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:44:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2020-10-24 22:44:32,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:44:32,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964651746] [2020-10-24 22:44:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 22:44:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:44:35,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-24 22:44:35,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:44:35,492 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-10-24 22:44:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:44:35,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:44:37,074 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-24 22:44:45,961 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 22:45:03,243 WARN L193 SmtUtils]: Spent 4.75 s on a formula simplification that was a NOOP. DAG size: 14 [2020-10-24 22:45:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 22:45:03,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964651746] [2020-10-24 22:45:03,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:45:03,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-24 22:45:03,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777244123] [2020-10-24 22:45:03,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 22:45:03,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:45:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 22:45:03,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=65, Unknown=2, NotChecked=0, Total=90 [2020-10-24 22:45:03,277 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 10 states. [2020-10-24 22:45:03,887 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-10-24 22:45:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:45:39,503 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-10-24 22:45:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 22:45:40,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-10-24 22:45:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:45:40,867 INFO L225 Difference]: With dead ends: 38 [2020-10-24 22:45:40,868 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 22:45:40,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=31, Invalid=77, Unknown=2, NotChecked=0, Total=110 [2020-10-24 22:45:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 22:45:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-10-24 22:45:40,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-24 22:45:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-24 22:45:40,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-10-24 22:45:40,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:45:40,916 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-24 22:45:40,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 22:45:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-24 22:45:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 22:45:40,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:45:40,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:45:41,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:45:41,127 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:45:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:45:41,129 INFO L82 PathProgramCache]: Analyzing trace with hash 788539339, now seen corresponding path program 1 times [2020-10-24 22:45:41,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:45:41,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290946294] [2020-10-24 22:45:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 22:45:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:45:46,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-24 22:45:46,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:45:46,932 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-24 22:45:47,805 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-24 22:45:50,061 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse4 (fp.add c_currentRoundingMode .cse5 .cse5)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= c_~ui~0 (fp.mul c_currentRoundingMode .cse0 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse1 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0)) (.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse4))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 .cse1) .cse3) .cse3)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse3 .cse3) (fp.sub c_currentRoundingMode .cse1 .cse2)))))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse4 .cse5) c_~yn~0) (= c_ULTIMATE.start_main_~yc~0 .cse0)))) is different from false [2020-10-24 22:45:52,191 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= (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_y_#res|) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~yc~0 .cse1))) is different from true [2020-10-24 22:45:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-10-24 22:45:52,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:45:53,862 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-24 22:46:04,071 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 22:46:08,014 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 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse2) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~epi~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 [2020-10-24 22:46:11,858 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse2) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~epi~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 [2020-10-24 22:46:15,848 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 c_ULTIMATE.start_main_~epi~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 [2020-10-24 22:46:19,821 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 c_ULTIMATE.start_main_~epi~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 [2020-10-24 22:46:23,870 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 .cse4))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2020-10-24 22:46:27,875 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 .cse4))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2020-10-24 22:46:30,058 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse2 (let ((.cse7 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse3 (fp.add c_currentRoundingMode .cse7 c_~ui~0))) (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode .cse2 (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 (fp.sub c_currentRoundingMode .cse2 .cse3)) (.cse5 (fp.sub c_currentRoundingMode .cse2 .cse7))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 .cse4) .cse6) .cse6)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse6 .cse6) (fp.sub c_currentRoundingMode .cse4 .cse5))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2020-10-24 22:46:32,271 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse2 (let ((.cse7 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse3 (fp.add c_currentRoundingMode .cse7 c_~ui~0))) (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode .cse2 (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 (fp.sub c_currentRoundingMode .cse2 .cse3)) (.cse5 (fp.sub c_currentRoundingMode .cse2 .cse7))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 .cse4) .cse6) .cse6)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse6 .cse6) (fp.sub c_currentRoundingMode .cse4 .cse5))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2020-10-24 22:46:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-10-24 22:46:32,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290946294] [2020-10-24 22:46:32,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 22:46:32,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-24 22:46:32,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195832679] [2020-10-24 22:46:32,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 22:46:32,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:46:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 22:46:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=68, Unknown=10, NotChecked=126, Total=240 [2020-10-24 22:46:32,278 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 16 states. [2020-10-24 22:46:34,668 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse3 (let ((.cse8 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse4 (fp.add c_currentRoundingMode .cse8 c_~ui~0))) (fp.add c_currentRoundingMode .cse4 (fp.mul c_currentRoundingMode .cse3 (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse5 (fp.sub c_currentRoundingMode .cse3 .cse4)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse8))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 .cse5) .cse7) .cse7)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse7 .cse7) (fp.sub c_currentRoundingMode .cse5 .cse6))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.geq .cse0 (fp.neg .cse1)) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse2 c_~yn~0) (fp.leq .cse0 .cse1) (= .cse2 c_~ui~0))) is different from false [2020-10-24 22:46:36,856 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse3 (let ((.cse8 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse4 (fp.add c_currentRoundingMode .cse8 c_~ui~0))) (fp.add c_currentRoundingMode .cse4 (fp.mul c_currentRoundingMode .cse3 (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse5 (fp.sub c_currentRoundingMode .cse3 .cse4)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse8))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 .cse5) .cse7) .cse7)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse7 .cse7) (fp.sub c_currentRoundingMode .cse5 .cse6))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.geq .cse0 (fp.neg .cse1)) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse2 c_~yn~0) (fp.leq .cse0 .cse1) (= .cse2 c_~ui~0))) is different from true [2020-10-24 22:46:39,117 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5)) (.cse7 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse7 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 .cse7))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~taud~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse3 c_~ui~0) c_~yn~0) (fp.leq .cse0 .cse1) (= c_ULTIMATE.start_main_~T~0 .cse2) (= |c_ULTIMATE.start_y_#res| c_~yn~0) (= .cse3 c_~ui~0) (= c_ULTIMATE.start_main_~K~0 .cse4) (= c_ULTIMATE.start_main_~taui~0 .cse2) (= c_ULTIMATE.start_main_~yc~0 .cse4))) is different from false [2020-10-24 22:46:43,104 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5)) (.cse7 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse7 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 .cse7))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~taud~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse3 c_~ui~0) c_~yn~0) (fp.leq .cse0 .cse1) (= c_ULTIMATE.start_main_~T~0 .cse2) (= |c_ULTIMATE.start_y_#res| c_~yn~0) (= .cse3 c_~ui~0) (= c_ULTIMATE.start_main_~K~0 .cse4) (= c_ULTIMATE.start_main_~taui~0 .cse2) (= c_ULTIMATE.start_main_~yc~0 .cse4))) is different from true [2020-10-24 22:46:45,229 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 c_ULTIMATE.start_main_~epi~0))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (fp.leq .cse0 .cse1) (= (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0) c_ULTIMATE.start_main_~epi~0) (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~taud~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse3 c_~ui~0) c_~yn~0) (= c_ULTIMATE.start_main_~T~0 .cse2) (= .cse3 c_~ui~0) (= c_ULTIMATE.start_main_~K~0 .cse4) (= c_ULTIMATE.start_main_~taui~0 .cse2) (= c_ULTIMATE.start_main_~yc~0 .cse4) (= c_ULTIMATE.start_main_~sumej~0 c_ULTIMATE.start_main_~epi~0))) is different from false [2020-10-24 22:46:49,236 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 c_ULTIMATE.start_main_~epi~0))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (fp.leq .cse0 .cse1) (= (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0) c_ULTIMATE.start_main_~epi~0) (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~taud~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse3 c_~ui~0) c_~yn~0) (= c_ULTIMATE.start_main_~T~0 .cse2) (= .cse3 c_~ui~0) (= c_ULTIMATE.start_main_~K~0 .cse4) (= c_ULTIMATE.start_main_~taui~0 .cse2) (= c_ULTIMATE.start_main_~yc~0 .cse4) (= c_ULTIMATE.start_main_~sumej~0 c_ULTIMATE.start_main_~epi~0))) is different from true [2020-10-24 22:46:53,254 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 c_ULTIMATE.start_main_~epi~0)))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~taud~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse3 .cse4) c_~yn~0) (= c_ULTIMATE.start_main_~T~0 .cse2) (= |c_ULTIMATE.start_y_#res| c_~yn~0) (= c_ULTIMATE.start_main_~K~0 .cse5) (= c_ULTIMATE.start_main_~taui~0 .cse2) (= (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse3) c_ULTIMATE.start_main_~epi~0) (= c_ULTIMATE.start_main_~yc~0 .cse5) (= c_ULTIMATE.start_main_~sumej~0 c_ULTIMATE.start_main_~epi~0)))) is different from true [2020-10-24 22:46:55,406 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse4 (fp.add c_currentRoundingMode .cse5 .cse5)) (.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (.cse7 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= c_~ui~0 (fp.mul c_currentRoundingMode .cse0 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse1 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0)) (.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse4))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 .cse1) .cse3) .cse3)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse3 .cse3) (fp.sub c_currentRoundingMode .cse1 .cse2)))))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse4 .cse5) c_~yn~0) (fp.leq .cse6 .cse7) (fp.geq .cse6 (fp.neg .cse7)) (= c_ULTIMATE.start_main_~yc~0 .cse0)))) is different from false [2020-10-24 22:47:22,026 WARN L193 SmtUtils]: Spent 22.27 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-24 22:47:31,463 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 22:47:31,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 22:47:31,667 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:759) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 31 more [2020-10-24 22:47:31,673 INFO L168 Benchmark]: Toolchain (without parser) took 184497.63 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.2 MB in the beginning and 15.7 MB in the end (delta: 417.6 kB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-10-24 22:47:31,674 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 39.8 MB. Free memory was 25.2 MB in the beginning and 25.1 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:47:31,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.47 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.4 MB in the beginning and 22.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:47:31,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.49 ms. Allocated memory is still 48.2 MB. Free memory was 22.6 MB in the beginning and 21.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:47:31,676 INFO L168 Benchmark]: Boogie Preprocessor took 45.57 ms. Allocated memory is still 48.2 MB. Free memory was 21.0 MB in the beginning and 31.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-24 22:47:31,677 INFO L168 Benchmark]: RCFGBuilder took 4531.02 ms. Allocated memory is still 48.2 MB. Free memory was 31.4 MB in the beginning and 30.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:47:31,678 INFO L168 Benchmark]: TraceAbstraction took 179550.24 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 15.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:47:31,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 39.8 MB. Free memory was 25.2 MB in the beginning and 25.1 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.47 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.4 MB in the beginning and 22.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.49 ms. Allocated memory is still 48.2 MB. Free memory was 22.6 MB in the beginning and 21.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.57 ms. Allocated memory is still 48.2 MB. Free memory was 21.0 MB in the beginning and 31.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4531.02 ms. Allocated memory is still 48.2 MB. Free memory was 31.4 MB in the beginning and 30.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 179550.24 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 15.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...