./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/addsub_float_exact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_exact.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 12de589994efba7ef02a09446e6dcc495aa77e08 ..................................................................................................................................................................................................................................... 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_exact.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 12de589994efba7ef02a09446e6dcc495aa77e08 ................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 21:35:44,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:35:44,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:35:44,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:35:44,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:35:44,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:35:44,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:35:44,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:35:44,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:35:44,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:35:44,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:35:44,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:35:44,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:35:44,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:35:44,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:35:44,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:35:44,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:35:44,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:35:44,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:35:44,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:35:44,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:35:44,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:35:44,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:35:44,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:35:44,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:35:44,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:35:44,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:35:44,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:35:44,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:35:44,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:35:44,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:35:44,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:35:44,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:35:44,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:35:44,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:35:44,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:35:44,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:35:44,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:35:44,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:35:44,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:35:44,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:35:44,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:35:44,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:35:44,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:35:44,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:35:44,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:35:44,461 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:35:44,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:35:44,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:35:44,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:35:44,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:35:44,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:35:44,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:35:44,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:35:44,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:35:44,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:35:44,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:35:44,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:35:44,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:35:44,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:35:44,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:35:44,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:35:44,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:35:44,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:35:44,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:35:44,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:35:44,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:35:44,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:35:44,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:35:44,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:35:44,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:35:44,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12de589994efba7ef02a09446e6dcc495aa77e08 [2020-10-25 21:35:44,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:35:44,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:35:44,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:35:44,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:35:44,897 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:35:44,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_exact.c [2020-10-25 21:35:44,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1350e1d/b66c4dcf53e84f0aaa9c9844c8dfe2e7/FLAG9d0cec17c [2020-10-25 21:35:45,481 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:35:45,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_exact.c [2020-10-25 21:35:45,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1350e1d/b66c4dcf53e84f0aaa9c9844c8dfe2e7/FLAG9d0cec17c [2020-10-25 21:35:45,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1350e1d/b66c4dcf53e84f0aaa9c9844c8dfe2e7 [2020-10-25 21:35:45,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:35:45,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:35:45,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:45,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:35:45,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:35:45,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:45" (1/1) ... [2020-10-25 21:35:45,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62640990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:45, skipping insertion in model container [2020-10-25 21:35:45,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:45" (1/1) ... [2020-10-25 21:35:45,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:35:45,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:35:46,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:46,132 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:35:46,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:46,166 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:35:46,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46 WrapperNode [2020-10-25 21:35:46,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:46,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:46,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:35:46,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:35:46,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:46,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:35:46,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:35:46,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:35:46,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (1/1) ... [2020-10-25 21:35:46,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:35:46,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:35:46,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:35:46,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:35:46,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (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 [2020-10-25 21:35:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:35:46,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:35:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:35:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:35:46,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:35:46,759 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 21:35:46,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:46 BoogieIcfgContainer [2020-10-25 21:35:46,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:35:46,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:35:46,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:35:46,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:35:46,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:35:45" (1/3) ... [2020-10-25 21:35:46,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bd5777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:46, skipping insertion in model container [2020-10-25 21:35:46,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:46" (2/3) ... [2020-10-25 21:35:46,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bd5777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:46, skipping insertion in model container [2020-10-25 21:35:46,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:46" (3/3) ... [2020-10-25 21:35:46,781 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2020-10-25 21:35:46,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:35:46,823 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:35:46,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:35:46,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:35:46,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:35:46,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:35:46,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:35:46,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:35:46,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:35:46,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:35:46,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:35:46,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-25 21:35:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-25 21:35:46,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:35:46,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-25 21:35:46,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:35:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:35:46,922 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-25 21:35:46,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:35:46,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161617827] [2020-10-25 21:35:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:35:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:35:47,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:35:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:35:47,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:35:47,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:35:47,204 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:35:47,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:35:47,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:35:47 BoogieIcfgContainer [2020-10-25 21:35:47,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:35:47,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:35:47,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:35:47,243 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:35:47,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:46" (3/4) ... [2020-10-25 21:35:47,247 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:35:47,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:35:47,252 INFO L168 Benchmark]: Toolchain (without parser) took 1383.35 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 35.1 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:47,254 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:47,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.46 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.4 MB in the end (delta: 343.0 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:47,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.95 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 21.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:47,260 INFO L168 Benchmark]: Boogie Preprocessor took 23.42 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 21.0 MB in the end (delta: 947.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:47,262 INFO L168 Benchmark]: RCFGBuilder took 527.71 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 31.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:47,264 INFO L168 Benchmark]: TraceAbstraction took 476.44 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 35.4 MB in the end (delta: -4.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:47,265 INFO L168 Benchmark]: Witness Printer took 5.43 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.1 MB in the end (delta: 265.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:47,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.46 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.4 MB in the end (delta: 343.0 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.95 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 21.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.42 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 21.0 MB in the end (delta: 947.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 527.71 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 31.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 476.44 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 35.4 MB in the end (delta: -4.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.43 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.1 MB in the end (delta: 265.5 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 someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e7f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L6] COND TRUE !(cond) [L3] __assert_fail("0", "addsub_float_exact.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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=10occurred 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, 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 21:35:49,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:35:49,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:35:49,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:35:49,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:35:49,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:35:49,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:35:49,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:35:49,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:35:49,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:35:49,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:35:49,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:35:49,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:35:49,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:35:49,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:35:49,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:35:49,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:35:49,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:35:49,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:35:49,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:35:49,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:35:49,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:35:49,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:35:49,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:35:49,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:35:49,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:35:49,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:35:49,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:35:49,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:35:49,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:35:49,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:35:49,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:35:49,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:35:49,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:35:49,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:35:49,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:35:49,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:35:49,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:35:49,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:35:49,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:35:49,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:35:49,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:35:50,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:35:50,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:35:50,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:35:50,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:35:50,030 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:35:50,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:35:50,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:35:50,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:35:50,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:35:50,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:35:50,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:35:50,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:35:50,033 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:35:50,033 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:35:50,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:35:50,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:35:50,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:35:50,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:35:50,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:35:50,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:35:50,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:35:50,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:35:50,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:35:50,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:35:50,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:35:50,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:35:50,036 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:35:50,037 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:35:50,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:35:50,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:35:50,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:35:50,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12de589994efba7ef02a09446e6dcc495aa77e08 [2020-10-25 21:35:50,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:35:50,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:35:50,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:35:50,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:35:50,486 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:35:50,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_exact.c [2020-10-25 21:35:50,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1f5a9de/ed0ef9a205a04aea9ff1b84031943017/FLAG9ba03969d [2020-10-25 21:35:51,212 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:35:51,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_exact.c [2020-10-25 21:35:51,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1f5a9de/ed0ef9a205a04aea9ff1b84031943017/FLAG9ba03969d [2020-10-25 21:35:51,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1f5a9de/ed0ef9a205a04aea9ff1b84031943017 [2020-10-25 21:35:51,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:35:51,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:35:51,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:51,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:35:51,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:35:51,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562806a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51, skipping insertion in model container [2020-10-25 21:35:51,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:35:51,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:35:51,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:51,866 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:35:51,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:51,903 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:35:51,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51 WrapperNode [2020-10-25 21:35:51,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:51,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:51,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:35:51,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:35:51,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:51,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:35:51,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:35:51,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:35:51,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (1/1) ... [2020-10-25 21:35:51,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:35:51,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:35:51,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:35:51,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:35:51,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (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 [2020-10-25 21:35:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:35:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:35:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:35:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:35:52,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:35:52,680 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 21:35:52,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:52 BoogieIcfgContainer [2020-10-25 21:35:52,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:35:52,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:35:52,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:35:52,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:35:52,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:35:51" (1/3) ... [2020-10-25 21:35:52,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdf4513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:52, skipping insertion in model container [2020-10-25 21:35:52,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:51" (2/3) ... [2020-10-25 21:35:52,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdf4513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:52, skipping insertion in model container [2020-10-25 21:35:52,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:52" (3/3) ... [2020-10-25 21:35:52,697 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2020-10-25 21:35:52,711 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:35:52,717 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:35:52,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:35:52,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:35:52,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:35:52,783 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:35:52,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:35:52,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:35:52,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:35:52,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:35:52,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:35:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-25 21:35:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-25 21:35:52,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:35:52,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-25 21:35:52,811 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:35:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:35:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-25 21:35:52,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:35:52,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036565951] [2020-10-25 21:35:52,839 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 [2020-10-25 21:35:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:35:53,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 21:35:53,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:35:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:35:53,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:35:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:35:53,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036565951] [2020-10-25 21:35:53,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:35:53,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-25 21:35:53,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350713206] [2020-10-25 21:35:53,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 21:35:53,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:35:53,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 21:35:53,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 21:35:53,278 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-10-25 21:35:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:35:53,618 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-10-25 21:35:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 21:35:53,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-10-25 21:35:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:35:53,627 INFO L225 Difference]: With dead ends: 14 [2020-10-25 21:35:53,627 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 21:35:53,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-25 21:35:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 21:35:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 21:35:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 21:35:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 21:35:53,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-10-25 21:35:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:35:53,657 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 21:35:53,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 21:35:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 21:35:53,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 21:35:53,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:35:53,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 21:35:53,945 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 21:35:53,946 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 21:35:53,946 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 21:35:53,946 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 21:35:53,946 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 21:35:53,947 INFO L270 CegarLoopResult]: At program point L17(lines 8 18) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2020-10-25 21:35:53,947 INFO L274 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-25 21:35:53,947 INFO L274 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-10-25 21:35:53,947 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 21:35:53,947 INFO L270 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2020-10-25 21:35:53,958 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:53,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 21:35:53,963 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:53,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 21:35:53,964 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:53,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 21:35:53,965 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:53,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 21:35:53,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:35:53 BoogieIcfgContainer [2020-10-25 21:35:53,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:35:53,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:35:53,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:35:53,969 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:35:53,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:52" (3/4) ... [2020-10-25 21:35:53,973 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 21:35:53,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 21:35:53,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 21:35:53,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-25 21:35:53,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 21:35:54,029 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:35:54,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:35:54,033 INFO L168 Benchmark]: Toolchain (without parser) took 2463.64 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 23.0 MB in the beginning and 25.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:54,033 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory is still 27.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:54,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.87 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.4 MB in the beginning and 36.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:54,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.90 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 35.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:54,036 INFO L168 Benchmark]: Boogie Preprocessor took 27.91 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 34.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:54,037 INFO L168 Benchmark]: RCFGBuilder took 706.56 ms. Allocated memory is still 58.7 MB. Free memory was 34.2 MB in the beginning and 39.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:54,038 INFO L168 Benchmark]: TraceAbstraction took 1280.67 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 28.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:54,039 INFO L168 Benchmark]: Witness Printer took 61.20 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 25.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:54,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory is still 27.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.87 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.4 MB in the beginning and 36.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.90 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 35.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.91 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 34.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 706.56 ms. Allocated memory is still 58.7 MB. Free memory was 34.2 MB in the beginning and 39.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1280.67 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 28.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 61.20 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 25.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant [2020-10-25 21:35:54,059 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:54,066 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 21:35:54,067 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:54,067 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ~bvadd64(cond, 4294967295bv32) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 6]: Loop Invariant [2020-10-25 21:35:54,067 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:54,068 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 21:35:54,068 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 21:35:54,068 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ~bvadd64(cond, 4294967295bv32) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 13 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 18 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 SizeOfPredicates, 7 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...