./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.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-newlib/double_req_bl_0730b.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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ................................................................................................................................................................................................................................................................................................ 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-newlib/double_req_bl_0730b.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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 21:50:31,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:50:31,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:50:31,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:50:31,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:50:31,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:50:31,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:50:31,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:50:31,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:50:31,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:50:31,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:50:31,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:50:31,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:50:31,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:50:31,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:50:31,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:50:31,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:50:31,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:50:31,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:50:31,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:50:31,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:50:31,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:50:31,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:50:31,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:50:31,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:50:31,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:50:31,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:50:31,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:50:31,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:50:31,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:50:31,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:50:31,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:50:31,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:50:31,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:50:31,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:50:31,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:50:31,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:50:31,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:50:31,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:50:31,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:50:31,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:50:31,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:50:31,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:50:31,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:50:31,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:50:31,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:50:31,622 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:50:31,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:50:31,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:50:31,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:50:31,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:50:31,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:50:31,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:50:31,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:50:31,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:50:31,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:50:31,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:50:31,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:50:31,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:50:31,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:50:31,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:50:31,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:50:31,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:50:31,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:50:31,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:50:31,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:50:31,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:50:31,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:50:31,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:50:31,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:50:31,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:50:31,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-10-25 21:50:32,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:50:32,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:50:32,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:50:32,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:50:32,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:50:32,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-25 21:50:32,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a39a4605/876067635b354b19b49b2498a7c590e5/FLAG2514f2c06 [2020-10-25 21:50:32,921 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:50:32,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-25 21:50:32,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a39a4605/876067635b354b19b49b2498a7c590e5/FLAG2514f2c06 [2020-10-25 21:50:33,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a39a4605/876067635b354b19b49b2498a7c590e5 [2020-10-25 21:50:33,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:50:33,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:50:33,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:50:33,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:50:33,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:50:33,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b425846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33, skipping insertion in model container [2020-10-25 21:50:33,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:50:33,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:50:33,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:50:33,554 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:50:33,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:50:33,621 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:50:33,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33 WrapperNode [2020-10-25 21:50:33,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:50:33,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:50:33,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:50:33,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:50:33,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:50:33,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:50:33,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:50:33,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:50:33,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (1/1) ... [2020-10-25 21:50:33,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:50:33,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:50:33,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:50:33,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:50:33,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (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 21:50:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:50:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:50:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:50:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:50:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:50:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:50:33,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:50:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:50:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:50:34,545 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:50:34,546 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-25 21:50:34,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:50:34 BoogieIcfgContainer [2020-10-25 21:50:34,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:50:34,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:50:34,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:50:34,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:50:34,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:50:33" (1/3) ... [2020-10-25 21:50:34,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4db04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:50:34, skipping insertion in model container [2020-10-25 21:50:34,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:33" (2/3) ... [2020-10-25 21:50:34,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4db04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:50:34, skipping insertion in model container [2020-10-25 21:50:34,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:50:34" (3/3) ... [2020-10-25 21:50:34,559 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-10-25 21:50:34,573 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:50:34,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:50:34,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:50:34,627 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:50:34,627 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:50:34,627 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:50:34,628 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:50:34,628 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:50:34,628 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:50:34,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:50:34,628 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:50:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-25 21:50:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 21:50:34,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:50:34,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:50:34,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:50:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:50:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-25 21:50:34,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:50:34,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791295135] [2020-10-25 21:50:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:50:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:50:34,843 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 21:50:34,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791295135] [2020-10-25 21:50:34,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:50:34,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:50:34,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237376777] [2020-10-25 21:50:34,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:50:34,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:50:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:50:34,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:50:34,874 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-25 21:50:34,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:50:34,900 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-25 21:50:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:50:34,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-25 21:50:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:50:34,913 INFO L225 Difference]: With dead ends: 105 [2020-10-25 21:50:34,914 INFO L226 Difference]: Without dead ends: 50 [2020-10-25 21:50:34,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:50:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-25 21:50:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-25 21:50:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-25 21:50:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-25 21:50:34,965 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-25 21:50:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:50:34,966 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-25 21:50:34,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:50:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-25 21:50:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:50:34,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:50:34,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:50:34,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:50:34,967 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:50:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:50:34,968 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-25 21:50:34,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:50:34,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542496977] [2020-10-25 21:50:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:50:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:50:35,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:50:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:50:35,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:50:35,105 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:50:35,105 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:50:35,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:50:35,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:50:35 BoogieIcfgContainer [2020-10-25 21:50:35,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:50:35,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:50:35,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:50:35,159 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:50:35,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:50:34" (3/4) ... [2020-10-25 21:50:35,163 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:50:35,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:50:35,169 INFO L168 Benchmark]: Toolchain (without parser) took 1923.31 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 23.2 MB in the beginning and 28.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:35,171 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory is still 25.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:50:35,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.20 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 22.5 MB in the beginning and 34.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:35,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.64 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 31.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:35,177 INFO L168 Benchmark]: Boogie Preprocessor took 84.10 ms. Allocated memory is still 60.8 MB. Free memory was 31.8 MB in the beginning and 30.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:35,179 INFO L168 Benchmark]: RCFGBuilder took 778.90 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 35.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:35,180 INFO L168 Benchmark]: TraceAbstraction took 607.17 ms. Allocated memory is still 60.8 MB. Free memory was 34.9 MB in the beginning and 28.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:35,181 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 60.8 MB. Free memory was 28.6 MB in the beginning and 28.4 MB in the end (delta: 196.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:50:35,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory is still 25.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.20 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 22.5 MB in the beginning and 34.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.64 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 31.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.10 ms. Allocated memory is still 60.8 MB. Free memory was 31.8 MB in the beginning and 30.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 778.90 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 35.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 607.17 ms. Allocated memory is still 60.8 MB. Free memory was 34.9 MB in the beginning and 28.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.19 ms. Allocated memory is still 60.8 MB. Free memory was 28.6 MB in the beginning and 28.4 MB in the end (delta: 196.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 21:50:37,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:50:37,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:50:38,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:50:38,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:50:38,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:50:38,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:50:38,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:50:38,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:50:38,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:50:38,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:50:38,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:50:38,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:50:38,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:50:38,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:50:38,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:50:38,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:50:38,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:50:38,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:50:38,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:50:38,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:50:38,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:50:38,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:50:38,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:50:38,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:50:38,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:50:38,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:50:38,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:50:38,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:50:38,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:50:38,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:50:38,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:50:38,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:50:38,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:50:38,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:50:38,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:50:38,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:50:38,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:50:38,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:50:38,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:50:38,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:50:38,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:50:38,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:50:38,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:50:38,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:50:38,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:50:38,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:50:38,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:50:38,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:50:38,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:50:38,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:50:38,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:50:38,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:50:38,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:50:38,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:50:38,135 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:50:38,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:50:38,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:50:38,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:50:38,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:50:38,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:50:38,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:50:38,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:50:38,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:50:38,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:50:38,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:50:38,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:50:38,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:50:38,138 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:50:38,139 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:50:38,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:50:38,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:50:38,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:50:38,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-10-25 21:50:38,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:50:38,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:50:38,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:50:38,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:50:38,573 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:50:38,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-25 21:50:38,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84131772/543b08152dfb41fc91ca7ad48cf55e57/FLAG2dd9f0207 [2020-10-25 21:50:39,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:50:39,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-10-25 21:50:39,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84131772/543b08152dfb41fc91ca7ad48cf55e57/FLAG2dd9f0207 [2020-10-25 21:50:39,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84131772/543b08152dfb41fc91ca7ad48cf55e57 [2020-10-25 21:50:39,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:50:39,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:50:39,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:50:39,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:50:39,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:50:39,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:50:39" (1/1) ... [2020-10-25 21:50:39,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703d222b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:39, skipping insertion in model container [2020-10-25 21:50:39,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:50:39" (1/1) ... [2020-10-25 21:50:39,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:50:39,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:50:40,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:50:40,080 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:50:40,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:50:40,192 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:50:40,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40 WrapperNode [2020-10-25 21:50:40,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:50:40,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:50:40,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:50:40,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:50:40,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:50:40,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:50:40,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:50:40,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:50:40,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (1/1) ... [2020-10-25 21:50:40,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:50:40,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:50:40,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:50:40,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:50:40,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (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 21:50:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:50:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:50:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:50:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:50:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:50:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:50:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:50:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:50:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:50:44,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:50:44,474 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-25 21:50:44,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:50:44 BoogieIcfgContainer [2020-10-25 21:50:44,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:50:44,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:50:44,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:50:44,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:50:44,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:50:39" (1/3) ... [2020-10-25 21:50:44,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc141c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:50:44, skipping insertion in model container [2020-10-25 21:50:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:50:40" (2/3) ... [2020-10-25 21:50:44,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc141c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:50:44, skipping insertion in model container [2020-10-25 21:50:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:50:44" (3/3) ... [2020-10-25 21:50:44,485 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-10-25 21:50:44,498 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:50:44,504 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:50:44,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:50:44,549 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:50:44,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:50:44,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:50:44,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:50:44,550 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:50:44,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:50:44,550 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:50:44,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:50:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-25 21:50:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 21:50:44,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:50:44,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:50:44,573 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:50:44,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:50:44,579 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-10-25 21:50:44,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:50:44,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742457648] [2020-10-25 21:50:44,594 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 21:50:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:50:45,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:50:45,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:50:45,160 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 21:50:45,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:50:45,164 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 21:50:45,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742457648] [2020-10-25 21:50:45,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:50:45,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:50:45,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172152431] [2020-10-25 21:50:45,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:50:45,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:50:45,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:50:45,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:50:45,191 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-25 21:50:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:50:45,218 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-10-25 21:50:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:50:45,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-25 21:50:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:50:45,233 INFO L225 Difference]: With dead ends: 105 [2020-10-25 21:50:45,233 INFO L226 Difference]: Without dead ends: 50 [2020-10-25 21:50:45,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:50:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-25 21:50:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-25 21:50:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-25 21:50:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-10-25 21:50:45,282 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-10-25 21:50:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:50:45,282 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-10-25 21:50:45,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:50:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-10-25 21:50:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:50:45,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:50:45,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:50:45,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:50:45,500 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:50:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:50:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-10-25 21:50:45,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:50:45,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899861750] [2020-10-25 21:50:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 21:50:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:50:45,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 21:50:45,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:50:46,037 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 21:50:46,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:50:46,122 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 21:50:46,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899861750] [2020-10-25 21:50:46,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:50:46,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-25 21:50:46,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403099807] [2020-10-25 21:50:46,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 21:50:46,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:50:46,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 21:50:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 21:50:46,133 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-10-25 21:50:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:50:47,182 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-10-25 21:50:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 21:50:47,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-25 21:50:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:50:47,560 INFO L225 Difference]: With dead ends: 59 [2020-10-25 21:50:47,561 INFO L226 Difference]: Without dead ends: 17 [2020-10-25 21:50:47,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 21:50:47,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-25 21:50:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-25 21:50:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-25 21:50:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-25 21:50:47,566 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-10-25 21:50:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:50:47,567 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-25 21:50:47,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 21:50:47,567 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-25 21:50:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:50:47,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:50:47,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:50:47,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:50:47,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:50:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:50:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-10-25 21:50:47,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:50:47,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31795778] [2020-10-25 21:50:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-25 21:50:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:50:47,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 21:50:47,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:50:47,916 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 21:50:47,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:50:47,968 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 21:50:47,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31795778] [2020-10-25 21:50:47,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:50:47,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-25 21:50:47,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242188476] [2020-10-25 21:50:47,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 21:50:47,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:50:47,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 21:50:47,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-25 21:50:47,974 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-10-25 21:50:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:50:50,003 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-25 21:50:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 21:50:50,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-25 21:50:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:50:50,005 INFO L225 Difference]: With dead ends: 29 [2020-10-25 21:50:50,005 INFO L226 Difference]: Without dead ends: 26 [2020-10-25 21:50:50,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-25 21:50:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-25 21:50:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-10-25 21:50:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-25 21:50:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-25 21:50:50,011 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-10-25 21:50:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:50:50,012 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-25 21:50:50,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 21:50:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-25 21:50:50,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 21:50:50,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:50:50,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:50:50,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 21:50:50,214 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:50:50,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:50:50,215 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-10-25 21:50:50,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:50:50,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394399107] [2020-10-25 21:50:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-25 21:50:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:50:51,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:50:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:50:52,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:50:52,612 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:50:52,612 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:50:52,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 21:50:52,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:50:52 BoogieIcfgContainer [2020-10-25 21:50:52,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:50:52,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:50:52,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:50:52,855 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:50:52,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:50:44" (3/4) ... [2020-10-25 21:50:52,858 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:50:52,915 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:50:52,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:50:52,918 INFO L168 Benchmark]: Toolchain (without parser) took 13285.69 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.9 MB in the beginning and 27.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:52,919 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 44.0 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 38.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:50:52,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.75 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 28.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:52,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.69 ms. Allocated memory is still 44.0 MB. Free memory was 28.6 MB in the beginning and 26.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:52,922 INFO L168 Benchmark]: Boogie Preprocessor took 97.50 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 MB in the beginning and 24.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:52,923 INFO L168 Benchmark]: RCFGBuilder took 4119.06 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 24.5 MB in the beginning and 31.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:52,923 INFO L168 Benchmark]: TraceAbstraction took 8376.18 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 29.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:52,924 INFO L168 Benchmark]: Witness Printer took 61.25 ms. Allocated memory is still 54.5 MB. Free memory was 29.8 MB in the beginning and 27.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:50:52,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 44.0 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 38.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.75 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 28.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.69 ms. Allocated memory is still 44.0 MB. Free memory was 28.6 MB in the beginning and 26.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.50 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 MB in the beginning and 24.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4119.06 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 24.5 MB in the beginning and 31.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8376.18 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 29.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.25 ms. Allocated memory is still 54.5 MB. Free memory was 29.8 MB in the beginning and 27.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L38] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L41] COND TRUE ix0 < 0 [L42] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 103 SDslu, 24 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 incorrect! Received shutdown request...