./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/addsub_float_inexact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/addsub_float_inexact.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 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ...................................................................................................................................................................................................................................... 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/addsub_float_inexact.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 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-04 22:59:00,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 22:59:00,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 22:59:00,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 22:59:00,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 22:59:00,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 22:59:00,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 22:59:00,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 22:59:00,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 22:59:00,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 22:59:00,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 22:59:00,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 22:59:00,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 22:59:00,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 22:59:00,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 22:59:00,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 22:59:00,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 22:59:00,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 22:59:00,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 22:59:00,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 22:59:00,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 22:59:00,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 22:59:00,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 22:59:00,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 22:59:00,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 22:59:00,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 22:59:00,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 22:59:00,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 22:59:00,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 22:59:00,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 22:59:00,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 22:59:00,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 22:59:00,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 22:59:00,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 22:59:00,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 22:59:00,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 22:59:00,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 22:59:00,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 22:59:00,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 22:59:00,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 22:59:00,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 22:59:00,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 22:59:00,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 22:59:00,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 22:59:00,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 22:59:00,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 22:59:00,822 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 22:59:00,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 22:59:00,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 22:59:00,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 22:59:00,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 22:59:00,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 22:59:00,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 22:59:00,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 22:59:00,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 22:59:00,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 22:59:00,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 22:59:00,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 22:59:00,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 22:59:00,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 22:59:00,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 22:59:00,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 22:59:00,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 22:59:00,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-07-04 22:59:01,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 22:59:01,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 22:59:01,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 22:59:01,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 22:59:01,105 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 22:59:01,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-07-04 22:59:01,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071cf9b2b/75895aa1f0674d1899d0ccd35644722f/FLAG494968f44 [2021-07-04 22:59:01,495 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 22:59:01,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-07-04 22:59:01,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071cf9b2b/75895aa1f0674d1899d0ccd35644722f/FLAG494968f44 [2021-07-04 22:59:01,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071cf9b2b/75895aa1f0674d1899d0ccd35644722f [2021-07-04 22:59:01,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 22:59:01,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 22:59:01,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 22:59:01,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 22:59:01,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 22:59:01,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 10:59:01" (1/1) ... [2021-07-04 22:59:01,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fbc012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:01, skipping insertion in model container [2021-07-04 22:59:01,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 10:59:01" (1/1) ... [2021-07-04 22:59:01,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 22:59:01,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 22:59:02,062 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-07-04 22:59:02,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 22:59:02,075 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 22:59:02,088 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-07-04 22:59:02,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 22:59:02,108 INFO L208 MainTranslator]: Completed translation [2021-07-04 22:59:02,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02 WrapperNode [2021-07-04 22:59:02,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 22:59:02,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 22:59:02,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 22:59:02,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 22:59:02,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 22:59:02,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 22:59:02,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 22:59:02,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 22:59:02,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 22:59:02,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 22:59:02,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 22:59:02,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 22:59:02,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (1/1) ... [2021-07-04 22:59:02,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 22:59:02,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 22:59:02,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-04 22:59:02,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-04 22:59:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 22:59:02,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 22:59:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 22:59:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 22:59:02,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 22:59:02,399 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-04 22:59:02,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:59:02 BoogieIcfgContainer [2021-07-04 22:59:02,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 22:59:02,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 22:59:02,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 22:59:02,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 22:59:02,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 10:59:01" (1/3) ... [2021-07-04 22:59:02,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789b6e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 10:59:02, skipping insertion in model container [2021-07-04 22:59:02,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:02" (2/3) ... [2021-07-04 22:59:02,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789b6e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 10:59:02, skipping insertion in model container [2021-07-04 22:59:02,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:59:02" (3/3) ... [2021-07-04 22:59:02,405 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-07-04 22:59:02,409 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 22:59:02,409 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 22:59:02,436 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 22:59:02,440 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 22:59:02,440 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 22:59:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 22:59:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-04 22:59:02,458 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:59:02,458 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-04 22:59:02,458 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:59:02,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:59:02,462 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-07-04 22:59:02,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 22:59:02,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993353488] [2021-07-04 22:59:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:59:02,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 22:59:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 22:59:02,547 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 22:59:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 22:59:02,573 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 22:59:02,594 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 22:59:02,600 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 22:59:02,604 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 22:59:02,605 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 22:59:02,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 10:59:02 BoogieIcfgContainer [2021-07-04 22:59:02,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 22:59:02,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 22:59:02,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 22:59:02,624 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 22:59:02,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:59:02" (3/4) ... [2021-07-04 22:59:02,627 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-07-04 22:59:02,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 22:59:02,630 INFO L168 Benchmark]: Toolchain (without parser) took 689.39 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 27.3 MB in the beginning and 47.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:02,631 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 32.7 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:59:02,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.60 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 27.0 MB in the beginning and 56.3 MB in the end (delta: -29.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:02,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.37 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 55.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:59:02,634 INFO L168 Benchmark]: Boogie Preprocessor took 19.12 ms. Allocated memory is still 73.4 MB. Free memory was 55.0 MB in the beginning and 54.1 MB in the end (delta: 903.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:59:02,635 INFO L168 Benchmark]: RCFGBuilder took 253.22 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 43.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:02,639 INFO L168 Benchmark]: TraceAbstraction took 220.46 ms. Allocated memory is still 73.4 MB. Free memory was 43.1 MB in the beginning and 47.9 MB in the end (delta: -4.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:59:02,640 INFO L168 Benchmark]: Witness Printer took 3.41 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 47.3 MB in the end (delta: 306.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:59:02,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 32.7 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 167.60 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 27.0 MB in the beginning and 56.3 MB in the end (delta: -29.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 17.37 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 55.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.12 ms. Allocated memory is still 73.4 MB. Free memory was 55.0 MB in the beginning and 54.1 MB in the end (delta: 903.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 253.22 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 43.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 220.46 ms. Allocated memory is still 73.4 MB. Free memory was 43.1 MB in the beginning and 47.9 MB in the end (delta: -4.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.41 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 47.3 MB in the end (delta: 306.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e8f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 172.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.3ms SsaConstructionTime, 31.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-07-04 22:59:02,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-04 22:59:04,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 22:59:04,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 22:59:04,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 22:59:04,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 22:59:04,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 22:59:04,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 22:59:04,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 22:59:04,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 22:59:04,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 22:59:04,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 22:59:04,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 22:59:04,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 22:59:04,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 22:59:04,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 22:59:04,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 22:59:04,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 22:59:04,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 22:59:04,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 22:59:04,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 22:59:04,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 22:59:04,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 22:59:04,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 22:59:04,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 22:59:04,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 22:59:04,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 22:59:04,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 22:59:04,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 22:59:04,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 22:59:04,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 22:59:04,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 22:59:04,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 22:59:04,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 22:59:04,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 22:59:04,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 22:59:04,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 22:59:04,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 22:59:04,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 22:59:04,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 22:59:04,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 22:59:04,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 22:59:04,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-07-04 22:59:04,636 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 22:59:04,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 22:59:04,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 22:59:04,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 22:59:04,637 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 22:59:04,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 22:59:04,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 22:59:04,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 22:59:04,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 22:59:04,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 22:59:04,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 22:59:04,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 22:59:04,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 22:59:04,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 22:59:04,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 22:59:04,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 22:59:04,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 22:59:04,639 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-07-04 22:59:04,639 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-07-04 22:59:04,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 22:59:04,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 22:59:04,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-04 22:59:04,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-07-04 22:59:04,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 22:59:04,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 22:59:04,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 22:59:04,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 22:59:04,955 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 22:59:04,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-07-04 22:59:05,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8291a8306/a0a1b9ff30e842bbb212f469d2a96a0e/FLAGa05ac5f3f [2021-07-04 22:59:05,387 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 22:59:05,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-07-04 22:59:05,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8291a8306/a0a1b9ff30e842bbb212f469d2a96a0e/FLAGa05ac5f3f [2021-07-04 22:59:05,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8291a8306/a0a1b9ff30e842bbb212f469d2a96a0e [2021-07-04 22:59:05,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 22:59:05,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 22:59:05,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 22:59:05,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 22:59:05,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 22:59:05,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:05,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e87865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05, skipping insertion in model container [2021-07-04 22:59:05,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:05,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 22:59:05,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 22:59:05,919 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-07-04 22:59:05,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 22:59:05,951 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 22:59:05,960 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-07-04 22:59:05,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 22:59:05,974 INFO L208 MainTranslator]: Completed translation [2021-07-04 22:59:05,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05 WrapperNode [2021-07-04 22:59:05,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 22:59:05,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 22:59:05,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 22:59:05,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 22:59:05,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:05,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 22:59:06,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 22:59:06,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 22:59:06,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 22:59:06,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 22:59:06,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 22:59:06,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 22:59:06,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 22:59:06,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (1/1) ... [2021-07-04 22:59:06,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 22:59:06,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 22:59:06,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-04 22:59:06,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-04 22:59:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 22:59:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 22:59:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-07-04 22:59:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 22:59:06,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 22:59:06,396 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-04 22:59:06,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:59:06 BoogieIcfgContainer [2021-07-04 22:59:06,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 22:59:06,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 22:59:06,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 22:59:06,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 22:59:06,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 10:59:05" (1/3) ... [2021-07-04 22:59:06,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb1911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 10:59:06, skipping insertion in model container [2021-07-04 22:59:06,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 10:59:05" (2/3) ... [2021-07-04 22:59:06,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb1911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 10:59:06, skipping insertion in model container [2021-07-04 22:59:06,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:59:06" (3/3) ... [2021-07-04 22:59:06,407 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-07-04 22:59:06,412 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 22:59:06,412 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 22:59:06,450 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 22:59:06,456 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 22:59:06,456 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 22:59:06,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 22:59:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-04 22:59:06,468 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 22:59:06,468 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-04 22:59:06,468 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 22:59:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 22:59:06,472 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-07-04 22:59:06,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-07-04 22:59:06,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411795952] [2021-07-04 22:59:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 22:59:06,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-07-04 22:59:06,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-07-04 22:59:06,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-07-04 22:59:06,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-07-04 22:59:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 22:59:06,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-04 22:59:06,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-04 22:59:06,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:59:06,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:59:06,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:59:06,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 22:59:06,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-04 22:59:06,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-04 22:59:06,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-07-04 22:59:06,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-07-04 22:59:06,793 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-04 22:59:06,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 22:59:06,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-07-04 22:59:06,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 22:59:06,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 22:59:06,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 22:59:06,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 22:59:06,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 22:59:06,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-04 22:59:06,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-07-04 22:59:06,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-07-04 22:59:06,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-04 22:59:06,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-07-04 22:59:06,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-07-04 22:59:06,835 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-07-04 22:59:06,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-04 22:59:06,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 22:59:06,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-04 22:59:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 22:59:06,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-07-04 22:59:06,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411795952] [2021-07-04 22:59:06,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411795952] provided 2 perfect and 0 imperfect interpolant sequences [2021-07-04 22:59:06,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-07-04 22:59:06,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-07-04 22:59:06,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683829451] [2021-07-04 22:59:06,990 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-04 22:59:06,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-07-04 22:59:07,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-04 22:59:07,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-04 22:59:07,003 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 22:59:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 22:59:07,086 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-07-04 22:59:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-04 22:59:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-07-04 22:59:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 22:59:07,092 INFO L225 Difference]: With dead ends: 13 [2021-07-04 22:59:07,092 INFO L226 Difference]: Without dead ends: 0 [2021-07-04 22:59:07,094 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 191.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-04 22:59:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-04 22:59:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-04 22:59:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 22:59:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-04 22:59:07,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-07-04 22:59:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 22:59:07,111 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-04 22:59:07,111 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 22:59:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-04 22:59:07,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-04 22:59:07,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-04 22:59:07,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-04 22:59:07,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-04 22:59:07,159 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-04 22:59:07,159 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-04 22:59:07,159 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-04 22:59:07,159 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-04 22:59:07,159 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-07-04 22:59:07,160 INFO L758 garLoopResultBuilder]: At program point L17(lines 8 18) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) [2021-07-04 22:59:07,160 INFO L762 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-07-04 22:59:07,160 INFO L762 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-07-04 22:59:07,160 INFO L758 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) [2021-07-04 22:59:07,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-07-04 22:59:07,360 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-07-04 22:59:07,361 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 22:59:07,368 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-07-04 22:59:07,371 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-07-04 22:59:07,371 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-07-04 22:59:07,371 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-07-04 22:59:07,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 10:59:07 BoogieIcfgContainer [2021-07-04 22:59:07,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 22:59:07,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 22:59:07,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 22:59:07,372 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 22:59:07,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 10:59:06" (3/4) ... [2021-07-04 22:59:07,374 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-04 22:59:07,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-07-04 22:59:07,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-04 22:59:07,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-07-04 22:59:07,384 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-04 22:59:07,407 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 22:59:07,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 22:59:07,408 INFO L168 Benchmark]: Toolchain (without parser) took 1594.69 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.5 MB in the beginning and 39.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:07,409 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory is still 30.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 22:59:07,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.25 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 36.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:07,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.63 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 34.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:07,410 INFO L168 Benchmark]: Boogie Preprocessor took 72.12 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 42.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:07,410 INFO L168 Benchmark]: RCFGBuilder took 326.06 ms. Allocated memory is still 58.7 MB. Free memory was 42.5 MB in the beginning and 31.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:07,410 INFO L168 Benchmark]: TraceAbstraction took 970.72 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 25.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:07,411 INFO L168 Benchmark]: Witness Printer took 35.25 ms. Allocated memory is still 58.7 MB. Free memory was 25.7 MB in the beginning and 39.9 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-07-04 22:59:07,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory is still 30.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 158.25 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 36.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.63 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 34.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.12 ms. Allocated memory is still 58.7 MB. Free memory was 34.8 MB in the beginning and 42.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 326.06 ms. Allocated memory is still 58.7 MB. Free memory was 42.5 MB in the beginning and 31.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 970.72 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 25.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Witness Printer took 35.25 ms. Allocated memory is still 58.7 MB. Free memory was 25.7 MB in the beginning and 39.9 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 914.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.5ms, AutomataDifference: 103.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 44.7ms, InitialAbstractionConstructionTime: 6.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 13 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 191.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 28.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 12.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 7.4ms SsaConstructionTime, 70.3ms SatisfiabilityAnalysisTime, 313.7ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant [2021-07-04 22:59:07,421 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-07-04 22:59:07,421 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && cond == 1bv32 - InvariantResult [Line: 6]: Loop Invariant [2021-07-04 22:59:07,421 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-07-04 22:59:07,421 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && cond == 1bv32 RESULT: Ultimate proved your program to be correct! [2021-07-04 22:59:07,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...